AudioTrack$StreamEventCallback NoClassDefFoundError

[hinditutorpoint]

hi sir
i found an error please resolve this also have two more question first
File Url: http://commondatastorage.googleapis.com/gtv-videos-bucket/sample/BigBuckBunny.mp4
i we this use this url work fine but this DefaultAudioSinkError alway
i m also same copy demo app
found error

I/zygote: Rejecting re-init on previously-failed class java.lang.Class<com.google.android.exoplayer2.audio.DefaultAudioSink$StreamEventCallbackV29>: java.lang.NoClassDefFoundError: Failed resolution of: Landroid/media/AudioTrack$StreamEventCallback;
        at com.google.android.exoplayer2.audio.AudioSink com.google.android.exoplayer2.DefaultRenderersFactory.buildAudioSink(android.content.Context, boolean, boolean, boolean) (DefaultRenderersFactory.java:628)
        at com.google.android.exoplayer2.Renderer[] com.google.android.exoplayer2.DefaultRenderersFactory.createRenderers(android.os.Handler, com.google.android.exoplayer2.video.VideoRendererEventListener, com.google.android.exoplayer2.audio.AudioRendererEventListener, com.google.android.exoplayer2.text.TextOutput, com.google.android.exoplayer2.metadata.MetadataOutput) (DefaultRenderersFactory.java:321)
        at void com.google.android.exoplayer2.SimpleExoPlayer.<init>(com.google.android.exoplayer2.SimpleExoPlayer$Builder) (SimpleExoPlayer.java:610)
        at com.google.android.exoplayer2.SimpleExoPlayer com.google.android.exoplayer2.SimpleExoPlayer$Builder.build() (SimpleExoPlayer.java:513)
        at boolean com.etc.etutorerp.Live.initPlayer() (Live.java:158)
        at void com.etc.etutorerp.Live.onStart() (Live.java:518)
        at void android.app.Instrumentation.callActivityOnStart(android.app.Activity) (Instrumentation.java:1341)
        at void android.app.Activity.performStart() (Activity.java:7200)
        at android.app.Activity android.app.ActivityThread.performLaunchActivity(android.app.ActivityThread$ActivityClientRecord, android.content.Intent) (ActivityThread.java:2920)
        at void android.app.ActivityThread.handleLaunchActivity(android.app.ActivityThread$ActivityClientRecord, android.content.Intent, java.lang.String) (ActivityThread.java:3032)
        at void android.app.ActivityThread.-wrap11(android.app.ActivityThread, android.app.ActivityThread$ActivityClientRecord, android.content.Intent, java.lang.String) (ActivityThread.java:-1)
        at void android.app.ActivityThread$H.handleMessage(android.os.Message) (ActivityThread.java:1696)
I/zygote:     at void android.os.Handler.dispatchMessage(android.os.Message) (Handler.java:105)
        at void android.os.Looper.loop() (Looper.java:164)
        at void android.app.ActivityThread.main(java.lang.String[]) (ActivityThread.java:6942)
        at java.lang.Object java.lang.reflect.Method.invoke(java.lang.Object, java.lang.Object[]) (Method.java:-2)
        at void com.android.internal.os.Zygote$MethodAndArgsCaller.run() (Zygote.java:327)
        at void com.android.internal.os.ZygoteInit.main(java.lang.String[]) (ZygoteInit.java:1374)
    Caused by: java.lang.ClassNotFoundException: Didn't find class "android.media.AudioTrack$StreamEventCallback" on path: DexPathList[[zip file "/data/app/com.etc.etutorerp-r11jQYfvYRpnTFXpBLE9ag==/base.apk"],nativeLibraryDirectories=[/data/app/com.etc.etutorerp-r11jQYfvYRpnTFXpBLE9ag==/lib/arm, /system/lib, /system/vendor/lib]]
        at java.lang.Class dalvik.system.BaseDexClassLoader.findClass(java.lang.String) (BaseDexClassLoader.java:93)
        at java.lang.Class java.lang.ClassLoader.loadClass(java.lang.String, boolean) (ClassLoader.java:379)
        at java.lang.Class java.lang.ClassLoader.loadClass(java.lang.String) (ClassLoader.java:312)
        at com.google.android.exoplayer2.audio.AudioSink com.google.android.exoplayer2.DefaultRenderersFactory.buildAudioSink(android.content.Context, boolean, boolean, boolean) (DefaultRenderersFactory.java:628)
        at com.google.android.exoplayer2.Renderer[] com.google.android.exoplayer2.DefaultRenderersFactory.createRenderers(android.os.Handler, com.google.android.exoplayer2.video.VideoRendererEventListener, com.google.android.exoplayer2.audio.AudioRendererEventListener, com.google.android.exoplayer2.text.TextOutput, com.google.android.exoplayer2.metadata.MetadataOutput) (DefaultRenderersFactory.java:321)
        at void com.google.android.exoplayer2.SimpleExoPlayer.<init>(com.google.android.exoplayer2.SimpleExoPlayer$Builder) (SimpleExoPlayer.java:610)
        at com.google.android.exoplayer2.SimpleExoPlayer com.google.android.exoplayer2.SimpleExoPlayer$Builder.build() (SimpleExoPlayer.java:513)
        at boolean com.etc.etutorerp.Live.initPlayer() (Live.java:158)
        at void com.etc.etutorerp.Live.onStart() (Live.java:518)
        at void android.app.Instrumentation.callActivityOnStart(android.app.Activity) (Instrumentation.java:1341)
        at void android.app.Activity.performStart() (Activity.java:7200)
        at android.app.Activity android.app.ActivityThread.performLaunchActivity(android.app.ActivityThread$ActivityClientRecord, android.content.Intent) (ActivityThread.java:2920)
        at void android.app.ActivityThread.handleLaunchActivity(android.app.ActivityThread$ActivityClientRecord, android.content.Intent, java.lang.String) (ActivityThread.java:3032)
        at void android.app.ActivityThread.-wrap11(android.app.ActivityThread, android.app.ActivityThread$ActivityClientRecord, android.content.Intent, java.lang.String) (ActivityThread.java:-1)
        at void android.app.ActivityThread$H.handleMessage(android.os.Message) (ActivityThread.java:1696)
        at void android.os.Handler.dispatchMessage(android.os.Message) (Handler.java:105)
        at void android.os.Looper.loop() (Looper.java:164)
        at void android.app.ActivityThread.main(java.lang.String[]) (ActivityThread.java:6942)
        at java.lang.Object java.lang.reflect.Method.invoke(java.lang.Object, java.lang.Object[]) (Method.java:-2)
        at void com.android.internal.os.Zygote$MethodAndArgsCaller.run() (Zygote.java:327)
        at void com.android.internal.os.ZygoteInit.main(java.lang.String[]) (ZygoteInit.java:1374)
I/zygote: Rejecting re-init on previously-failed class java.lang.Class<com.google.android.exoplayer2.audio.DefaultAudioSink$StreamEventCallbackV29>: java.lang.NoClassDefFoundError: Failed resolution of: Landroid/media/AudioTrack$StreamEventCallback;
        at com.google.android.exoplayer2.audio.AudioSink com.google.android.exoplayer2.DefaultRenderersFactory.buildAudioSink(android.content.Context, boolean, boolean, boolean) (DefaultRenderersFactory.java:628)
        at com.google.android.exoplayer2.Renderer[] com.google.android.exoplayer2.DefaultRenderersFactory.createRenderers(android.os.Handler, com.google.android.exoplayer2.video.VideoRendererEventListener, com.google.android.exoplayer2.audio.AudioRendererEventListener, com.google.android.exoplayer2.text.TextOutput, com.google.android.exoplayer2.metadata.MetadataOutput) (DefaultRenderersFactory.java:321)
        at void com.google.android.exoplayer2.SimpleExoPlayer.<init>(com.google.android.exoplayer2.SimpleExoPlayer$Builder) (SimpleExoPlayer.java:610)
        at com.google.android.exoplayer2.SimpleExoPlayer com.google.android.exoplayer2.SimpleExoPlayer$Builder.build() (SimpleExoPlayer.java:513)
        at boolean com.etc.etutorerp.Live.initPlayer() (Live.java:158)
        at void com.etc.etutorerp.Live.onStart() (Live.java:518)
        at void android.app.Instrumentation.callActivityOnStart(android.app.Activity) (Instrumentation.java:1341)
        at void android.app.Activity.performStart() (Activity.java:7200)
        at android.app.Activity android.app.ActivityThread.performLaunchActivity(android.app.ActivityThread$ActivityClientRecord, android.content.Intent) (ActivityThread.java:2920)
        at void android.app.ActivityThread.handleLaunchActivity(android.app.ActivityThread$ActivityClientRecord, android.content.Intent, java.lang.String) (ActivityThread.java:3032)
        at void android.app.ActivityThread.-wrap11(android.app.ActivityThread, android.app.ActivityThread$ActivityClientRecord, android.content.Intent, java.lang.String) (ActivityThread.java:-1)
        at void android.app.ActivityThread$H.handleMessage(android.os.Message) (ActivityThread.java:1696)
        at void android.os.Handler.dispatchMessage(android.os.Message) (Handler.java:105)
        at void android.os.Looper.loop() (Looper.java:164)
        at void android.app.ActivityThread.main(java.lang.String[]) (ActivityThread.java:6942)
        at java.lang.Object java.lang.reflect.Method.invoke(java.lang.Object, java.lang.Object[]) (Method.java:-2)
        at void com.android.internal.os.Zygote$MethodAndArgsCaller.run() (Zygote.java:327)
        at void com.android.internal.os.ZygoteInit.main(java.lang.String[]) (ZygoteInit.java:1374)
    Caused by: java.lang.ClassNotFoundException: Didn't find class "android.media.AudioTrack$StreamEventCallback" on path: DexPathList[[zip file "/data/app/com.etc.etutorerp-r11jQYfvYRpnTFXpBLE9ag==/base.apk"],nativeLibraryDirectories=[/data/app/com.etc.etutorerp-r11jQYfvYRpnTFXpBLE9ag==/lib/arm, /system/lib, /system/vendor/lib]]
        at java.lang.Class dalvik.system.BaseDexClassLoader.findClass(java.lang.String) (BaseDexClassLoader.java:93)
        at java.lang.Class java.lang.ClassLoader.loadClass(java.lang.String, boolean) (ClassLoader.java:379)
        at java.lang.Class java.lang.ClassLoader.loadClass(java.lang.String) (ClassLoader.java:312)
        at com.google.android.exoplayer2.audio.AudioSink com.google.android.exoplayer2.DefaultRenderersFactory.buildAudioSink(android.content.Context, boolean, boolean, boolean) (DefaultRenderersFactory.java:628)
        at com.google.android.exoplayer2.Renderer[] com.google.android.exoplayer2.DefaultRenderersFactory.createRenderers(android.os.Handler, com.google.android.exoplayer2.video.VideoRendererEventListener, com.google.android.exoplayer2.audio.AudioRendererEventListener, com.google.android.exoplayer2.text.TextOutput, com.google.android.exoplayer2.metadata.MetadataOutput) (DefaultRenderersFactory.java:321)
        at void com.google.android.exoplayer2.SimpleExoPlayer.<init>(com.google.android.exoplayer2.SimpleExoPlayer$Builder) (SimpleExoPlayer.java:610)
        at com.google.android.exoplayer2.SimpleExoPlayer com.google.android.exoplayer2.SimpleExoPlayer$Builder.build() (SimpleExoPlayer.java:513)
        at boolean com.etc.etutorerp.Live.initPlayer() (Live.java:158)
        at void com.etc.etutorerp.Live.onStart() (Live.java:518)
        at void android.app.Instrumentation.callActivityOnStart(android.app.Activity) (Instrumentation.java:1341)
I/zygote:     at void android.app.Activity.performStart() (Activity.java:7200)
        at android.app.Activity android.app.ActivityThread.performLaunchActivity(android.app.ActivityThread$ActivityClientRecord, android.content.Intent) (ActivityThread.java:2920)
        at void android.app.ActivityThread.handleLaunchActivity(android.app.ActivityThread$ActivityClientRecord, android.content.Intent, java.lang.String) (ActivityThread.java:3032)
        at void android.app.ActivityThread.-wrap11(android.app.ActivityThread, android.app.ActivityThread$ActivityClientRecord, android.content.Intent, java.lang.String) (ActivityThread.java:-1)
        at void android.app.ActivityThread$H.handleMessage(android.os.Message) (ActivityThread.java:1696)
        at void android.os.Handler.dispatchMessage(android.os.Message) (Handler.java:105)
        at void android.os.Looper.loop() (Looper.java:164)
        at void android.app.ActivityThread.main(java.lang.String[]) (ActivityThread.java:6942)
        at java.lang.Object java.lang.reflect.Method.invoke(java.lang.Object, java.lang.Object[]) (Method.java:-2)
        at void com.android.internal.os.Zygote$MethodAndArgsCaller.run() (Zygote.java:327)
        at void com.android.internal.os.ZygoteInit.main(java.lang.String[]) (ZygoteInit.java:1374)
I/zygote: Rejecting re-init on previously-failed class java.lang.Class<com.google.android.exoplayer2.audio.DefaultAudioSink$StreamEventCallbackV29>: java.lang.NoClassDefFoundError: Failed resolution of: Landroid/media/AudioTrack$StreamEventCallback;
        at com.google.android.exoplayer2.audio.AudioSink com.google.android.exoplayer2.DefaultRenderersFactory.buildAudioSink(android.content.Context, boolean, boolean, boolean) (DefaultRenderersFactory.java:628)
        at com.google.android.exoplayer2.Renderer[] com.google.android.exoplayer2.DefaultRenderersFactory.createRenderers(android.os.Handler, com.google.android.exoplayer2.video.VideoRendererEventListener, com.google.android.exoplayer2.audio.AudioRendererEventListener, com.google.android.exoplayer2.text.TextOutput, com.google.android.exoplayer2.metadata.MetadataOutput) (DefaultRenderersFactory.java:321)
        at void com.google.android.exoplayer2.SimpleExoPlayer.<init>(com.google.android.exoplayer2.SimpleExoPlayer$Builder) (SimpleExoPlayer.java:610)
        at com.google.android.exoplayer2.SimpleExoPlayer com.google.android.exoplayer2.SimpleExoPlayer$Builder.build() (SimpleExoPlayer.java:513)
        at boolean com.etc.etutorerp.Live.initPlayer() (Live.java:158)
        at void com.etc.etutorerp.Live.onStart() (Live.java:518)
        at void android.app.Instrumentation.callActivityOnStart(android.app.Activity) (Instrumentation.java:1341)
        at void android.app.Activity.performStart() (Activity.java:7200)
        at android.app.Activity android.app.ActivityThread.performLaunchActivity(android.app.ActivityThread$ActivityClientRecord, android.content.Intent) (ActivityThread.java:2920)
        at void android.app.ActivityThread.handleLaunchActivity(android.app.ActivityThread$ActivityClientRecord, android.content.Intent, java.lang.String) (ActivityThread.java:3032)
        at void android.app.ActivityThread.-wrap11(android.app.ActivityThread, android.app.ActivityThread$ActivityClientRecord, android.content.Intent, java.lang.String) (ActivityThread.java:-1)
        at void android.app.ActivityThread$H.handleMessage(android.os.Message) (ActivityThread.java:1696)
        at void android.os.Handler.dispatchMessage(android.os.Message) (Handler.java:105)
        at void android.os.Looper.loop() (Looper.java:164)
        at void android.app.ActivityThread.main(java.lang.String[]) (ActivityThread.java:6942)
        at java.lang.Object java.lang.reflect.Method.invoke(java.lang.Object, java.lang.Object[]) (Method.java:-2)
        at void com.android.internal.os.Zygote$MethodAndArgsCaller.run() (Zygote.java:327)
        at void com.android.internal.os.ZygoteInit.main(java.lang.String[]) (ZygoteInit.java:1374)
    Caused by: java.lang.ClassNotFoundException: Didn't find class "android.media.AudioTrack$StreamEventCallback" on path: DexPathList[[zip file "/data/app/com.etc.etutorerp-r11jQYfvYRpnTFXpBLE9ag==/base.apk"],nativeLibraryDirectories=[/data/app/com.etc.etutorerp-r11jQYfvYRpnTFXpBLE9ag==/lib/arm, /system/lib, /system/vendor/lib]]
        at java.lang.Class dalvik.system.BaseDexClassLoader.findClass(java.lang.String) (BaseDexClassLoader.java:93)
        at java.lang.Class java.lang.ClassLoader.loadClass(java.lang.String, boolean) (ClassLoader.java:379)
        at java.lang.Class java.lang.ClassLoader.loadClass(java.lang.String) (ClassLoader.java:312)
        at com.google.android.exoplayer2.audio.AudioSink com.google.android.exoplayer2.DefaultRenderersFactory.buildAudioSink(android.content.Context, boolean, boolean, boolean) (DefaultRenderersFactory.java:628)
I/zygote:     at com.google.android.exoplayer2.Renderer[] com.google.android.exoplayer2.DefaultRenderersFactory.createRenderers(android.os.Handler, com.google.android.exoplayer2.video.VideoRendererEventListener, com.google.android.exoplayer2.audio.AudioRendererEventListener, com.google.android.exoplayer2.text.TextOutput, com.google.android.exoplayer2.metadata.MetadataOutput) (DefaultRenderersFactory.java:321)
        at void com.google.android.exoplayer2.SimpleExoPlayer.<init>(com.google.android.exoplayer2.SimpleExoPlayer$Builder) (SimpleExoPlayer.java:610)
        at com.google.android.exoplayer2.SimpleExoPlayer com.google.android.exoplayer2.SimpleExoPlayer$Builder.build() (SimpleExoPlayer.java:513)
        at boolean com.etc.etutorerp.Live.initPlayer() (Live.java:158)
        at void com.etc.etutorerp.Live.onStart() (Live.java:518)
        at void android.app.Instrumentation.callActivityOnStart(android.app.Activity) (Instrumentation.java:1341)
        at void android.app.Activity.performStart() (Activity.java:7200)
        at android.app.Activity android.app.ActivityThread.performLaunchActivity(android.app.ActivityThread$ActivityClientRecord, android.content.Intent) (ActivityThread.java:2920)
        at void android.app.ActivityThread.handleLaunchActivity(android.app.ActivityThread$ActivityClientRecord, android.content.Intent, java.lang.String) (ActivityThread.java:3032)
        at void android.app.ActivityThread.-wrap11(android.app.ActivityThread, android.app.ActivityThread$ActivityClientRecord, android.content.Intent, java.lang.String) (ActivityThread.java:-1)
        at void android.app.ActivityThread$H.handleMessage(android.os.Message) (ActivityThread.java:1696)
        at void android.os.Handler.dispatchMessage(android.os.Message) (Handler.java:105)
        at void android.os.Looper.loop() (Looper.java:164)
        at void android.app.ActivityThread.main(java.lang.String[]) (ActivityThread.java:6942)
        at java.lang.Object java.lang.reflect.Method.invoke(java.lang.Object, java.lang.Object[]) (Method.java:-2)
        at void com.android.internal.os.Zygote$MethodAndArgsCaller.run() (Zygote.java:327)
        at void com.android.internal.os.ZygoteInit.main(java.lang.String[]) (ZygoteInit.java:1374)
I/zygote: Rejecting re-init on previously-failed class java.lang.Class<com.google.android.exoplayer2.audio.DefaultAudioSink$StreamEventCallbackV29>: java.lang.NoClassDefFoundError: Failed resolution of: Landroid/media/AudioTrack$StreamEventCallback;
        at com.google.android.exoplayer2.audio.AudioSink com.google.android.exoplayer2.DefaultRenderersFactory.buildAudioSink(android.content.Context, boolean, boolean, boolean) (DefaultRenderersFactory.java:628)
        at com.google.android.exoplayer2.Renderer[] com.google.android.exoplayer2.DefaultRenderersFactory.createRenderers(android.os.Handler, com.google.android.exoplayer2.video.VideoRendererEventListener, com.google.android.exoplayer2.audio.AudioRendererEventListener, com.google.android.exoplayer2.text.TextOutput, com.google.android.exoplayer2.metadata.MetadataOutput) (DefaultRenderersFactory.java:321)
I/zygote:     at void com.google.android.exoplayer2.SimpleExoPlayer.<init>(com.google.android.exoplayer2.SimpleExoPlayer$Builder) (SimpleExoPlayer.java:610)
        at com.google.android.exoplayer2.SimpleExoPlayer com.google.android.exoplayer2.SimpleExoPlayer$Builder.build() (SimpleExoPlayer.java:513)
        at boolean com.etc.etutorerp.Live.initPlayer() (Live.java:158)
        at void com.etc.etutorerp.Live.onStart() (Live.java:518)
        at void android.app.Instrumentation.callActivityOnStart(android.app.Activity) (Instrumentation.java:1341)
        at void android.app.Activity.performStart() (Activity.java:7200)
        at android.app.Activity android.app.ActivityThread.performLaunchActivity(android.app.ActivityThread$ActivityClientRecord, android.content.Intent) (ActivityThread.java:2920)
        at void android.app.ActivityThread.handleLaunchActivity(android.app.ActivityThread$ActivityClientRecord, android.content.Intent, java.lang.String) (ActivityThread.java:3032)
        at void android.app.ActivityThread.-wrap11(android.app.ActivityThread, android.app.ActivityThread$ActivityClientRecord, android.content.Intent, java.lang.String) (ActivityThread.java:-1)
        at void android.app.ActivityThread$H.handleMessage(android.os.Message) (ActivityThread.java:1696)
        at void android.os.Handler.dispatchMessage(android.os.Message) (Handler.java:105)
        at void android.os.Looper.loop() (Looper.java:164)
        at void android.app.ActivityThread.main(java.lang.String[]) (ActivityThread.java:6942)
        at java.lang.Object java.lang.reflect.Method.invoke(java.lang.Object, java.lang.Object[]) (Method.java:-2)
        at void com.android.internal.os.Zygote$MethodAndArgsCaller.run() (Zygote.java:327)
        at void com.android.internal.os.ZygoteInit.main(java.lang.String[]) (ZygoteInit.java:1374)
    Caused by: java.lang.ClassNotFoundException: Didn't find class "android.media.AudioTrack$StreamEventCallback" on path: DexPathList[[zip file "/data/app/com.etc.etutorerp-r11jQYfvYRpnTFXpBLE9ag==/base.apk"],nativeLibraryDirectories=[/data/app/com.etc.etutorerp-r11jQYfvYRpnTFXpBLE9ag==/lib/arm, /system/lib, /system/vendor/lib]]
        at java.lang.Class dalvik.system.BaseDexClassLoader.findClass(java.lang.String) (BaseDexClassLoader.java:93)
        at java.lang.Class java.lang.ClassLoader.loadClass(java.lang.String, boolean) (ClassLoader.java:379)
        at java.lang.Class java.lang.ClassLoader.loadClass(java.lang.String) (ClassLoader.java:312)
        at com.google.android.exoplayer2.audio.AudioSink com.google.android.exoplayer2.DefaultRenderersFactory.buildAudioSink(android.content.Context, boolean, boolean, boolean) (DefaultRenderersFactory.java:628)
        at com.google.android.exoplayer2.Renderer[] com.google.android.exoplayer2.DefaultRenderersFactory.createRenderers(android.os.Handler, com.google.android.exoplayer2.video.VideoRendererEventListener, com.google.android.exoplayer2.audio.AudioRendererEventListener, com.google.android.exoplayer2.text.TextOutput, com.google.android.exoplayer2.metadata.MetadataOutput) (DefaultRenderersFactory.java:321)
        at void com.google.android.exoplayer2.SimpleExoPlayer.<init>(com.google.android.exoplayer2.SimpleExoPlayer$Builder) (SimpleExoPlayer.java:610)
        at com.google.android.exoplayer2.SimpleExoPlayer com.google.android.exoplayer2.SimpleExoPlayer$Builder.build() (SimpleExoPlayer.java:513)
        at boolean com.etc.etutorerp.Live.initPlayer() (Live.java:158)
        at void com.etc.etutorerp.Live.onStart() (Live.java:518)
        at void android.app.Instrumentation.callActivityOnStart(android.app.Activity) (Instrumentation.java:1341)
        at void android.app.Activity.performStart() (Activity.java:7200)
        at android.app.Activity android.app.ActivityThread.performLaunchActivity(android.app.ActivityThread$ActivityClientRecord, android.content.Intent) (ActivityThread.java:2920)
        at void android.app.ActivityThread.handleLaunchActivity(android.app.ActivityThread$ActivityClientRecord, android.content.Intent, java.lang.String) (ActivityThread.java:3032)
        at void android.app.ActivityThread.-wrap11(android.app.ActivityThread, android.app.ActivityThread$ActivityClientRecord, android.content.Intent, java.lang.String) (ActivityThread.java:-1)
        at void android.app.ActivityThread$H.handleMessage(android.os.Message) (ActivityThread.java:1696)
        at void android.os.Handler.dispatchMessage(android.os.Message) (Handler.java:105)
        at void android.os.Looper.loop() (Looper.java:164)
        at void android.app.ActivityThread.main(java.lang.String[]) (ActivityThread.java:6942)
        at java.lang.Object java.lang.reflect.Method.invoke(java.lang.Object, java.lang.Object[]) (Method.java:-2)
        at void com.android.internal.os.Zygote$MethodAndArgsCaller.run() (Zygote.java:327)
        at void com.android.internal.os.ZygoteInit.main(java.lang.String[]) (ZygoteInit.java:1374)
I/zygote: Rejecting re-init on previously-failed class java.lang.Class<com.google.android.exoplayer2.audio.DefaultAudioSink$StreamEventCallbackV29>: java.lang.NoClassDefFoundError: Failed resolution of: Landroid/media/AudioTrack$StreamEventCallback;
I/zygote:     at com.google.android.exoplayer2.audio.AudioSink com.google.android.exoplayer2.DefaultRenderersFactory.buildAudioSink(android.content.Context, boolean, boolean, boolean) (DefaultRenderersFactory.java:628)
        at com.google.android.exoplayer2.Renderer[] com.google.android.exoplayer2.DefaultRenderersFactory.createRenderers(android.os.Handler, com.google.android.exoplayer2.video.VideoRendererEventListener, com.google.android.exoplayer2.audio.AudioRendererEventListener, com.google.android.exoplayer2.text.TextOutput, com.google.android.exoplayer2.metadata.MetadataOutput) (DefaultRenderersFactory.java:321)
        at void com.google.android.exoplayer2.SimpleExoPlayer.<init>(com.google.android.exoplayer2.SimpleExoPlayer$Builder) (SimpleExoPlayer.java:610)
        at com.google.android.exoplayer2.SimpleExoPlayer com.google.android.exoplayer2.SimpleExoPlayer$Builder.build() (SimpleExoPlayer.java:513)
        at boolean com.etc.etutorerp.Live.initPlayer() (Live.java:158)
        at void com.etc.etutorerp.Live.onStart() (Live.java:518)
        at void android.app.Instrumentation.callActivityOnStart(android.app.Activity) (Instrumentation.java:1341)
        at void android.app.Activity.performStart() (Activity.java:7200)
        at android.app.Activity android.app.ActivityThread.performLaunchActivity(android.app.ActivityThread$ActivityClientRecord, android.content.Intent) (ActivityThread.java:2920)
        at void android.app.ActivityThread.handleLaunchActivity(android.app.ActivityThread$ActivityClientRecord, android.content.Intent, java.lang.String) (ActivityThread.java:3032)
        at void android.app.ActivityThread.-wrap11(android.app.ActivityThread, android.app.ActivityThread$ActivityClientRecord, android.content.Intent, java.lang.String) (ActivityThread.java:-1)
        at void android.app.ActivityThread$H.handleMessage(android.os.Message) (ActivityThread.java:1696)
        at void android.os.Handler.dispatchMessage(android.os.Message) (Handler.java:105)
        at void android.os.Looper.loop() (Looper.java:164)
        at void android.app.ActivityThread.main(java.lang.String[]) (ActivityThread.java:6942)
        at java.lang.Object java.lang.reflect.Method.invoke(java.lang.Object, java.lang.Object[]) (Method.java:-2)
        at void com.android.internal.os.Zygote$MethodAndArgsCaller.run() (Zygote.java:327)
        at void com.android.internal.os.ZygoteInit.main(java.lang.String[]) (ZygoteInit.java:1374)
    Caused by: java.lang.ClassNotFoundException: Didn't find class "android.media.AudioTrack$StreamEventCallback" on path: DexPathList[[zip file "/data/app/com.etc.etutorerp-r11jQYfvYRpnTFXpBLE9ag==/base.apk"],nativeLibraryDirectories=[/data/app/com.etc.etutorerp-r11jQYfvYRpnTFXpBLE9ag==/lib/arm, /system/lib, /system/vendor/lib]]
        at java.lang.Class dalvik.system.BaseDexClassLoader.findClass(java.lang.String) (BaseDexClassLoader.java:93)
        at java.lang.Class java.lang.ClassLoader.loadClass(java.lang.String, boolean) (ClassLoader.java:379)
        at java.lang.Class java.lang.ClassLoader.loadClass(java.lang.String) (ClassLoader.java:312)
        at com.google.android.exoplayer2.audio.AudioSink com.google.android.exoplayer2.DefaultRenderersFactory.buildAudioSink(android.content.Context, boolean, boolean, boolean) (DefaultRenderersFactory.java:628)
        at com.google.android.exoplayer2.Renderer[] com.google.android.exoplayer2.DefaultRenderersFactory.createRenderers(android.os.Handler, com.google.android.exoplayer2.video.VideoRendererEventListener, com.google.android.exoplayer2.audio.AudioRendererEventListener, com.google.android.exoplayer2.text.TextOutput, com.google.android.exoplayer2.metadata.MetadataOutput) (DefaultRenderersFactory.java:321)
        at void com.google.android.exoplayer2.SimpleExoPlayer.<init>(com.google.android.exoplayer2.SimpleExoPlayer$Builder) (SimpleExoPlayer.java:610)
        at com.google.android.exoplayer2.SimpleExoPlayer com.google.android.exoplayer2.SimpleExoPlayer$Builder.build() (SimpleExoPlayer.java:513)
        at boolean com.etc.etutorerp.Live.initPlayer() (Live.java:158)
        at void com.etc.etutorerp.Live.onStart() (Live.java:518)
        at void android.app.Instrumentation.callActivityOnStart(android.app.Activity) (Instrumentation.java:1341)
        at void android.app.Activity.performStart() (Activity.java:7200)
        at android.app.Activity android.app.ActivityThread.performLaunchActivity(android.app.ActivityThread$ActivityClientRecord, android.content.Intent) (ActivityThread.java:2920)
        at void android.app.ActivityThread.handleLaunchActivity(android.app.ActivityThread$ActivityClientRecord, android.content.Intent, java.lang.String) (ActivityThread.java:3032)
        at void android.app.ActivityThread.-wrap11(android.app.ActivityThread, android.app.ActivityThread$ActivityClientRecord, android.content.Intent, java.lang.String) (ActivityThread.java:-1)
        at void android.app.ActivityThread$H.handleMessage(android.os.Message) (ActivityThread.java:1696)
        at void android.os.Handler.dispatchMessage(android.os.Message) (Handler.java:105)
        at void android.os.Looper.loop() (Looper.java:164)
        at void android.app.ActivityThread.main(java.lang.String[]) (ActivityThread.java:6942)
        at java.lang.Object java.lang.reflect.Method.invoke(java.lang.Object, java.lang.Object[]) (Method.java:-2)
        at void com.android.internal.os.Zygote$MethodAndArgsCaller.run() (Zygote.java:327)
        at void com.android.internal.os.ZygoteInit.main(java.lang.String[]) (ZygoteInit.java:1374)
I/zygote: Rejecting re-init on previously-failed class java.lang.Class<com.google.android.exoplayer2.audio.DefaultAudioSink$StreamEventCallbackV29>: java.lang.NoClassDefFoundError: Failed resolution of: Landroid/media/AudioTrack$StreamEventCallback;
        at com.google.android.exoplayer2.audio.AudioSink com.google.android.exoplayer2.DefaultRenderersFactory.buildAudioSink(android.content.Context, boolean, boolean, boolean) (DefaultRenderersFactory.java:628)
        at com.google.android.exoplayer2.Renderer[] com.google.android.exoplayer2.DefaultRenderersFactory.createRenderers(android.os.Handler, com.google.android.exoplayer2.video.VideoRendererEventListener, com.google.android.exoplayer2.audio.AudioRendererEventListener, com.google.android.exoplayer2.text.TextOutput, com.google.android.exoplayer2.metadata.MetadataOutput) (DefaultRenderersFactory.java:321)
        at void com.google.android.exoplayer2.SimpleExoPlayer.<init>(com.google.android.exoplayer2.SimpleExoPlayer$Builder) (SimpleExoPlayer.java:610)
        at com.google.android.exoplayer2.SimpleExoPlayer com.google.android.exoplayer2.SimpleExoPlayer$Builder.build() (SimpleExoPlayer.java:513)
        at boolean com.etc.etutorerp.Live.initPlayer() (Live.java:158)
        at void com.etc.etutorerp.Live.onStart() (Live.java:518)
        at void android.app.Instrumentation.callActivityOnStart(android.app.Activity) (Instrumentation.java:1341)
I/zygote:     at void android.app.Activity.performStart() (Activity.java:7200)
        at android.app.Activity android.app.ActivityThread.performLaunchActivity(android.app.ActivityThread$ActivityClientRecord, android.content.Intent) (ActivityThread.java:2920)
        at void android.app.ActivityThread.handleLaunchActivity(android.app.ActivityThread$ActivityClientRecord, android.content.Intent, java.lang.String) (ActivityThread.java:3032)
        at void android.app.ActivityThread.-wrap11(android.app.ActivityThread, android.app.ActivityThread$ActivityClientRecord, android.content.Intent, java.lang.String) (ActivityThread.java:-1)
        at void android.app.ActivityThread$H.handleMessage(android.os.Message) (ActivityThread.java:1696)
        at void android.os.Handler.dispatchMessage(android.os.Message) (Handler.java:105)
        at void android.os.Looper.loop() (Looper.java:164)
        at void android.app.ActivityThread.main(java.lang.String[]) (ActivityThread.java:6942)
        at java.lang.Object java.lang.reflect.Method.invoke(java.lang.Object, java.lang.Object[]) (Method.java:-2)
        at void com.android.internal.os.Zygote$MethodAndArgsCaller.run() (Zygote.java:327)
        at void com.android.internal.os.ZygoteInit.main(java.lang.String[]) (ZygoteInit.java:1374)
    Caused by: java.lang.ClassNotFoundException: Didn't find class "android.media.AudioTrack$StreamEventCallback" on path: DexPathList[[zip file "/data/app/com.etc.etutorerp-r11jQYfvYRpnTFXpBLE9ag==/base.apk"],nativeLibraryDirectories=[/data/app/com.etc.etutorerp-r11jQYfvYRpnTFXpBLE9ag==/lib/arm, /system/lib, /system/vendor/lib]]
        at java.lang.Class dalvik.system.BaseDexClassLoader.findClass(java.lang.String) (BaseDexClassLoader.java:93)
        at java.lang.Class java.lang.ClassLoader.loadClass(java.lang.String, boolean) (ClassLoader.java:379)
        at java.lang.Class java.lang.ClassLoader.loadClass(java.lang.String) (ClassLoader.java:312)
        at com.google.android.exoplayer2.audio.AudioSink com.google.android.exoplayer2.DefaultRenderersFactory.buildAudioSink(android.content.Context, boolean, boolean, boolean) (DefaultRenderersFactory.java:628)
        at com.google.android.exoplayer2.Renderer[] com.google.android.exoplayer2.DefaultRenderersFactory.createRenderers(android.os.Handler, com.google.android.exoplayer2.video.VideoRendererEventListener, com.google.android.exoplayer2.audio.AudioRendererEventListener, com.google.android.exoplayer2.text.TextOutput, com.google.android.exoplayer2.metadata.MetadataOutput) (DefaultRenderersFactory.java:321)
        at void com.google.android.exoplayer2.SimpleExoPlayer.<init>(com.google.android.exoplayer2.SimpleExoPlayer$Builder) (SimpleExoPlayer.java:610)
        at com.google.android.exoplayer2.SimpleExoPlayer com.google.android.exoplayer2.SimpleExoPlayer$Builder.build() (SimpleExoPlayer.java:513)
        at boolean com.etc.etutorerp.Live.initPlayer() (Live.java:158)
        at void com.etc.etutorerp.Live.onStart() (Live.java:518)
        at void android.app.Instrumentation.callActivityOnStart(android.app.Activity) (Instrumentation.java:1341)
        at void android.app.Activity.performStart() (Activity.java:7200)
        at android.app.Activity android.app.ActivityThread.performLaunchActivity(android.app.ActivityThread$ActivityClientRecord, android.content.Intent) (ActivityThread.java:2920)
        at void android.app.ActivityThread.handleLaunchActivity(android.app.ActivityThread$ActivityClientRecord, android.content.Intent, java.lang.String) (ActivityThread.java:3032)
        at void android.app.ActivityThread.-wrap11(android.app.ActivityThread, android.app.ActivityThread$ActivityClientRecord, android.content.Intent, java.lang.String) (ActivityThread.java:-1)
        at void android.app.ActivityThread$H.handleMessage(android.os.Message) (ActivityThread.java:1696)
        at void android.os.Handler.dispatchMessage(android.os.Message) (Handler.java:105)
        at void android.os.Looper.loop() (Looper.java:164)
        at void android.app.ActivityThread.main(java.lang.String[]) (ActivityThread.java:6942)
        at java.lang.Object java.lang.reflect.Method.invoke(java.lang.Object, java.lang.Object[]) (Method.java:-2)
        at void com.android.internal.os.Zygote$MethodAndArgsCaller.run() (Zygote.java:327)
        at void com.android.internal.os.ZygoteInit.main(java.lang.String[]) (ZygoteInit.java:1374)
I/zygote: Rejecting re-init on previously-failed class java.lang.Class<com.google.android.exoplayer2.audio.DefaultAudioSink$StreamEventCallbackV29>: java.lang.NoClassDefFoundError: Failed resolution of: Landroid/media/AudioTrack$StreamEventCallback;
        at com.google.android.exoplayer2.audio.AudioSink com.google.android.exoplayer2.DefaultRenderersFactory.buildAudioSink(android.content.Context, boolean, boolean, boolean) (DefaultRenderersFactory.java:628)
        at com.google.android.exoplayer2.Renderer[] com.google.android.exoplayer2.DefaultRenderersFactory.createRenderers(android.os.Handler, com.google.android.exoplayer2.video.VideoRendererEventListener, com.google.android.exoplayer2.audio.AudioRendererEventListener, com.google.android.exoplayer2.text.TextOutput, com.google.android.exoplayer2.metadata.MetadataOutput) (DefaultRenderersFactory.java:321)
        at void com.google.android.exoplayer2.SimpleExoPlayer.<init>(com.google.android.exoplayer2.SimpleExoPlayer$Builder) (SimpleExoPlayer.java:610)
        at com.google.android.exoplayer2.SimpleExoPlayer com.google.android.exoplayer2.SimpleExoPlayer$Builder.build() (SimpleExoPlayer.java:513)
        at boolean com.etc.etutorerp.Live.initPlayer() (Live.java:158)
        at void com.etc.etutorerp.Live.onStart() (Live.java:518)
        at void android.app.Instrumentation.callActivityOnStart(android.app.Activity) (Instrumentation.java:1341)
        at void android.app.Activity.performStart() (Activity.java:7200)
        at android.app.Activity android.app.ActivityThread.performLaunchActivity(android.app.ActivityThread$ActivityClientRecord, android.content.Intent) (ActivityThread.java:2920)
        at void android.app.ActivityThread.handleLaunchActivity(android.app.ActivityThread$ActivityClientRecord, android.content.Intent, java.lang.String) (ActivityThread.java:3032)
        at void android.app.ActivityThread.-wrap11(android.app.ActivityThread, android.app.ActivityThread$ActivityClientRecord, android.content.Intent, java.lang.String) (ActivityThread.java:-1)
        at void android.app.ActivityThread$H.handleMessage(android.os.Message) (ActivityThread.java:1696)
        at void android.os.Handler.dispatchMessage(android.os.Message) (Handler.java:105)
        at void android.os.Looper.loop() (Looper.java:164)
        at void android.app.ActivityThread.main(java.lang.String[]) (ActivityThread.java:6942)
        at java.lang.Object java.lang.reflect.Method.invoke(java.lang.Object, java.lang.Object[]) (Method.java:-2)
        at void com.android.internal.os.Zygote$MethodAndArgsCaller.run() (Zygote.java:327)
        at void com.android.internal.os.ZygoteInit.main(java.lang.String[]) (ZygoteInit.java:1374)
I/zygote: Caused by: java.lang.ClassNotFoundException: Didn't find class "android.media.AudioTrack$StreamEventCallback" on path: DexPathList[[zip file "/data/app/com.etc.etutorerp-r11jQYfvYRpnTFXpBLE9ag==/base.apk"],nativeLibraryDirectories=[/data/app/com.etc.etutorerp-r11jQYfvYRpnTFXpBLE9ag==/lib/arm, /system/lib, /system/vendor/lib]]
        at java.lang.Class dalvik.system.BaseDexClassLoader.findClass(java.lang.String) (BaseDexClassLoader.java:93)
        at java.lang.Class java.lang.ClassLoader.loadClass(java.lang.String, boolean) (ClassLoader.java:379)
        at java.lang.Class java.lang.ClassLoader.loadClass(java.lang.String) (ClassLoader.java:312)
        at com.google.android.exoplayer2.audio.AudioSink com.google.android.exoplayer2.DefaultRenderersFactory.buildAudioSink(android.content.Context, boolean, boolean, boolean) (DefaultRenderersFactory.java:628)
        at com.google.android.exoplayer2.Renderer[] com.google.android.exoplayer2.DefaultRenderersFactory.createRenderers(android.os.Handler, com.google.android.exoplayer2.video.VideoRendererEventListener, com.google.android.exoplayer2.audio.AudioRendererEventListener, com.google.android.exoplayer2.text.TextOutput, com.google.android.exoplayer2.metadata.MetadataOutput) (DefaultRenderersFactory.java:321)
        at void com.google.android.exoplayer2.SimpleExoPlayer.<init>(com.google.android.exoplayer2.SimpleExoPlayer$Builder) (SimpleExoPlayer.java:610)
        at com.google.android.exoplayer2.SimpleExoPlayer com.google.android.exoplayer2.SimpleExoPlayer$Builder.build() (SimpleExoPlayer.java:513)
        at boolean com.etc.etutorerp.Live.initPlayer() (Live.java:158)
        at void com.etc.etutorerp.Live.onStart() (Live.java:518)
        at void android.app.Instrumentation.callActivityOnStart(android.app.Activity) (Instrumentation.java:1341)
        at void android.app.Activity.performStart() (Activity.java:7200)
        at android.app.Activity android.app.ActivityThread.performLaunchActivity(android.app.ActivityThread$ActivityClientRecord, android.content.Intent) (ActivityThread.java:2920)
        at void android.app.ActivityThread.handleLaunchActivity(android.app.ActivityThread$ActivityClientRecord, android.content.Intent, java.lang.String) (ActivityThread.java:3032)
        at void android.app.ActivityThread.-wrap11(android.app.ActivityThread, android.app.ActivityThread$ActivityClientRecord, android.content.Intent, java.lang.String) (ActivityThread.java:-1)
        at void android.app.ActivityThread$H.handleMessage(android.os.Message) (ActivityThread.java:1696)
        at void android.os.Handler.dispatchMessage(android.os.Message) (Handler.java:105)
        at void android.os.Looper.loop() (Looper.java:164)
        at void android.app.ActivityThread.main(java.lang.String[]) (ActivityThread.java:6942)
        at java.lang.Object java.lang.reflect.Method.invoke(java.lang.Object, java.lang.Object[]) (Method.java:-2)
        at void com.android.internal.os.Zygote$MethodAndArgsCaller.run() (Zygote.java:327)
        at void com.android.internal.os.ZygoteInit.main(java.lang.String[]) (ZygoteInit.java:1374)
I/zygote: Rejecting re-init on previously-failed class java.lang.Class<com.google.android.exoplayer2.audio.DefaultAudioSink$StreamEventCallbackV29>: java.lang.NoClassDefFoundError: Failed resolution of: Landroid/media/AudioTrack$StreamEventCallback;
        at com.google.android.exoplayer2.audio.AudioSink com.google.android.exoplayer2.DefaultRenderersFactory.buildAudioSink(android.content.Context, boolean, boolean, boolean) (DefaultRenderersFactory.java:628)
        at com.google.android.exoplayer2.Renderer[] com.google.android.exoplayer2.DefaultRenderersFactory.createRenderers(android.os.Handler, com.google.android.exoplayer2.video.VideoRendererEventListener, com.google.android.exoplayer2.audio.AudioRendererEventListener, com.google.android.exoplayer2.text.TextOutput, com.google.android.exoplayer2.metadata.MetadataOutput) (DefaultRenderersFactory.java:321)
        at void com.google.android.exoplayer2.SimpleExoPlayer.<init>(com.google.android.exoplayer2.SimpleExoPlayer$Builder) (SimpleExoPlayer.java:610)
        at com.google.android.exoplayer2.SimpleExoPlayer com.google.android.exoplayer2.SimpleExoPlayer$Builder.build() (SimpleExoPlayer.java:513)
        at boolean com.etc.etutorerp.Live.initPlayer() (Live.java:158)
        at void com.etc.etutorerp.Live.onStart() (Live.java:518)
        at void android.app.Instrumentation.callActivityOnStart(android.app.Activity) (Instrumentation.java:1341)
        at void android.app.Activity.performStart() (Activity.java:7200)
        at android.app.Activity android.app.ActivityThread.performLaunchActivity(android.app.ActivityThread$ActivityClientRecord, android.content.Intent) (ActivityThread.java:2920)
        at void android.app.ActivityThread.handleLaunchActivity(android.app.ActivityThread$ActivityClientRecord, android.content.Intent, java.lang.String) (ActivityThread.java:3032)
        at void android.app.ActivityThread.-wrap11(android.app.ActivityThread, android.app.ActivityThread$ActivityClientRecord, android.content.Intent, java.lang.String) (ActivityThread.java:-1)
        at void android.app.ActivityThread$H.handleMessage(android.os.Message) (ActivityThread.java:1696)
        at void android.os.Handler.dispatchMessage(android.os.Message) (Handler.java:105)
        at void android.os.Looper.loop() (Looper.java:164)
        at void android.app.ActivityThread.main(java.lang.String[]) (ActivityThread.java:6942)
        at java.lang.Object java.lang.reflect.Method.invoke(java.lang.Object, java.lang.Object[]) (Method.java:-2)
        at void com.android.internal.os.Zygote$MethodAndArgsCaller.run() (Zygote.java:327)
        at void com.android.internal.os.ZygoteInit.main(java.lang.String[]) (ZygoteInit.java:1374)
    Caused by: java.lang.ClassNotFoundException: Didn't find class "android.media.AudioTrack$StreamEventCallback" on path: DexPathList[[zip file "/data/app/com.etc.etutorerp-r11jQYfvYRpnTFXpBLE9ag==/base.apk"],nativeLibraryDirectories=[/data/app/com.etc.etutorerp-r11jQYfvYRpnTFXpBLE9ag==/lib/arm, /system/lib, /system/vendor/lib]]
        at java.lang.Class dalvik.system.BaseDexClassLoader.findClass(java.lang.String) (BaseDexClassLoader.java:93)
        at java.lang.Class java.lang.ClassLoader.loadClass(java.lang.String, boolean) (ClassLoader.java:379)
        at java.lang.Class java.lang.ClassLoader.loadClass(java.lang.String) (ClassLoader.java:312)
        at com.google.android.exoplayer2.audio.AudioSink com.google.android.exoplayer2.DefaultRenderersFactory.buildAudioSink(android.content.Context, boolean, boolean, boolean) (DefaultRenderersFactory.java:628)
        at com.google.android.exoplayer2.Renderer[] com.google.android.exoplayer2.DefaultRenderersFactory.createRenderers(android.os.Handler, com.google.android.exoplayer2.video.VideoRendererEventListener, com.google.android.exoplayer2.audio.AudioRendererEventListener, com.google.android.exoplayer2.text.TextOutput, com.google.android.exoplayer2.metadata.MetadataOutput) (DefaultRenderersFactory.java:321)
        at void com.google.android.exoplayer2.SimpleExoPlayer.<init>(com.google.android.exoplayer2.SimpleExoPlayer$Builder) (SimpleExoPlayer.java:610)
        at com.google.android.exoplayer2.SimpleExoPlayer com.google.android.exoplayer2.SimpleExoPlayer$Builder.build() (SimpleExoPlayer.java:513)
        at boolean com.etc.etutorerp.Live.initPlayer() (Live.java:158)
        at void com.etc.etutorerp.Live.onStart() (Live.java:518)
        at void android.app.Instrumentation.callActivityOnStart(android.app.Activity) (Instrumentation.java:1341)
        at void android.app.Activity.performStart() (Activity.java:7200)
        at android.app.Activity android.app.ActivityThread.performLaunchActivity(android.app.ActivityThread$ActivityClientRecord, android.content.Intent) (ActivityThread.java:2920)
        at void android.app.ActivityThread.handleLaunchActivity(android.app.ActivityThread$ActivityClientRecord, android.content.Intent, java.lang.String) (ActivityThread.java:3032)
        at void android.app.ActivityThread.-wrap11(android.app.ActivityThread, android.app.ActivityThread$ActivityClientRecord, android.content.Intent, java.lang.String) (ActivityThread.java:-1)
        at void android.app.ActivityThread$H.handleMessage(android.os.Message) (ActivityThread.java:1696)
        at void android.os.Handler.dispatchMessage(android.os.Message) (Handler.java:105)
        at void android.os.Looper.loop() (Looper.java:164)
        at void android.app.ActivityThread.main(java.lang.String[]) (ActivityThread.java:6942)
        at java.lang.Object java.lang.reflect.Method.invoke(java.lang.Object, java.lang.Object[]) (Method.java:-2)
        at void com.android.internal.os.Zygote$MethodAndArgsCaller.run() (Zygote.java:327)
        at void com.android.internal.os.ZygoteInit.main(java.lang.String[]) (ZygoteInit.java:1374)
I/zygote: Rejecting re-init on previously-failed class java.lang.Class<com.google.android.exoplayer2.audio.DefaultAudioSink$StreamEventCallbackV29>: java.lang.NoClassDefFoundError: Failed resolution of: Landroid/media/AudioTrack$StreamEventCallback;
        at com.google.android.exoplayer2.audio.AudioSink com.google.android.exoplayer2.DefaultRenderersFactory.buildAudioSink(android.content.Context, boolean, boolean, boolean) (DefaultRenderersFactory.java:628)
        at com.google.android.exoplayer2.Renderer[] com.google.android.exoplayer2.DefaultRenderersFactory.createRenderers(android.os.Handler, com.google.android.exoplayer2.video.VideoRendererEventListener, com.google.android.exoplayer2.audio.AudioRendererEventListener, com.google.android.exoplayer2.text.TextOutput, com.google.android.exoplayer2.metadata.MetadataOutput) (DefaultRenderersFactory.java:321)
        at void com.google.android.exoplayer2.SimpleExoPlayer.<init>(com.google.android.exoplayer2.SimpleExoPlayer$Builder) (SimpleExoPlayer.java:610)
        at com.google.android.exoplayer2.SimpleExoPlayer com.google.android.exoplayer2.SimpleExoPlayer$Builder.build() (SimpleExoPlayer.java:513)
        at boolean com.etc.etutorerp.Live.initPlayer() (Live.java:158)
        at void com.etc.etutorerp.Live.onStart() (Live.java:518)
        at void android.app.Instrumentation.callActivityOnStart(android.app.Activity) (Instrumentation.java:1341)
        at void android.app.Activity.performStart() (Activity.java:7200)
        at android.app.Activity android.app.ActivityThread.performLaunchActivity(android.app.ActivityThread$ActivityClientRecord, android.content.Intent) (ActivityThread.java:2920)
        at void android.app.ActivityThread.handleLaunchActivity(android.app.ActivityThread$ActivityClientRecord, android.content.Intent, java.lang.String) (ActivityThread.java:3032)
        at void android.app.ActivityThread.-wrap11(android.app.ActivityThread, android.app.ActivityThread$ActivityClientRecord, android.content.Intent, java.lang.String) (ActivityThread.java:-1)
        at void android.app.ActivityThread$H.handleMessage(android.os.Message) (ActivityThread.java:1696)
        at void android.os.Handler.dispatchMessage(android.os.Message) (Handler.java:105)
        at void android.os.Looper.loop() (Looper.java:164)
        at void android.app.ActivityThread.main(java.lang.String[]) (ActivityThread.java:6942)
        at java.lang.Object java.lang.reflect.Method.invoke(java.lang.Object, java.lang.Object[]) (Method.java:-2)
        at void com.android.internal.os.Zygote$MethodAndArgsCaller.run() (Zygote.java:327)
        at void com.android.internal.os.ZygoteInit.main(java.lang.String[]) (ZygoteInit.java:1374)
    Caused by: java.lang.ClassNotFoundException: Didn't find class "android.media.AudioTrack$StreamEventCallback" on path: DexPathList[[zip file "/data/app/com.etc.etutorerp-r11jQYfvYRpnTFXpBLE9ag==/base.apk"],nativeLibraryDirectories=[/data/app/com.etc.etutorerp-r11jQYfvYRpnTFXpBLE9ag==/lib/arm, /system/lib, /system/vendor/lib]]
        at java.lang.Class dalvik.system.BaseDexClassLoader.findClass(java.lang.String) (BaseDexClassLoader.java:93)
        at java.lang.Class java.lang.ClassLoader.loadClass(java.lang.String, boolean) (ClassLoader.java:379)
        at java.lang.Class java.lang.ClassLoader.loadClass(java.lang.String) (ClassLoader.java:312)
        at com.google.android.exoplayer2.audio.AudioSink com.google.android.exoplayer2.DefaultRenderersFactory.buildAudioSink(android.content.Context, boolean, boolean, boolean) (DefaultRenderersFactory.java:628)
        at com.google.android.exoplayer2.Renderer[] com.google.android.exoplayer2.DefaultRenderersFactory.createRenderers(android.os.Handler, com.google.android.exoplayer2.video.VideoRendererEventListener, com.google.android.exoplayer2.audio.AudioRendererEventListener, com.google.android.exoplayer2.text.TextOutput, com.google.android.exoplayer2.metadata.MetadataOutput) (DefaultRenderersFactory.java:321)
        at void com.google.android.exoplayer2.SimpleExoPlayer.<init>(com.google.android.exoplayer2.SimpleExoPlayer$Builder) (SimpleExoPlayer.java:610)
        at com.google.android.exoplayer2.SimpleExoPlayer com.google.android.exoplayer2.SimpleExoPlayer$Builder.build() (SimpleExoPlayer.java:513)
        at boolean com.etc.etutorerp.Live.initPlayer() (Live.java:158)
        at void com.etc.etutorerp.Live.onStart() (Live.java:518)
        at void android.app.Instrumentation.callActivityOnStart(android.app.Activity) (Instrumentation.java:1341)
        at void android.app.Activity.performStart() (Activity.java:7200)
        at android.app.Activity android.app.ActivityThread.performLaunchActivity(android.app.ActivityThread$ActivityClientRecord, android.content.Intent) (ActivityThread.java:2920)
        at void android.app.ActivityThread.handleLaunchActivity(android.app.ActivityThread$ActivityClientRecord, android.content.Intent, java.lang.String) (ActivityThread.java:3032)
        at void android.app.ActivityThread.-wrap11(android.app.ActivityThread, android.app.ActivityThread$ActivityClientRecord, android.content.Intent, java.lang.String) (ActivityThread.java:-1)
        at void android.app.ActivityThread$H.handleMessage(android.os.Message) (ActivityThread.java:1696)
        at void android.os.Handler.dispatchMessage(android.os.Message) (Handler.java:105)
        at void android.os.Looper.loop() (Looper.java:164)
        at void android.app.ActivityThread.main(java.lang.String[]) (ActivityThread.java:6942)
        at java.lang.Object java.lang.reflect.Method.invoke(java.lang.Object, java.lang.Object[]) (Method.java:-2)
        at void com.android.internal.os.Zygote$MethodAndArgsCaller.run() (Zygote.java:327)
        at void com.android.internal.os.ZygoteInit.main(java.lang.String[]) (ZygoteInit.java:1374)
I/zygote: Rejecting re-init on previously-failed class java.lang.Class<com.google.android.exoplayer2.audio.DefaultAudioSink$StreamEventCallbackV29>: java.lang.NoClassDefFoundError: Failed resolution of: Landroid/media/AudioTrack$StreamEventCallback;
        at com.google.android.exoplayer2.audio.AudioSink com.google.android.exoplayer2.DefaultRenderersFactory.buildAudioSink(android.content.Context, boolean, boolean, boolean) (DefaultRenderersFactory.java:628)
        at com.google.android.exoplayer2.Renderer[] com.google.android.exoplayer2.DefaultRenderersFactory.createRenderers(android.os.Handler, com.google.android.exoplayer2.video.VideoRendererEventListener, com.google.android.exoplayer2.audio.AudioRendererEventListener, com.google.android.exoplayer2.text.TextOutput, com.google.android.exoplayer2.metadata.MetadataOutput) (DefaultRenderersFactory.java:321)
        at void com.google.android.exoplayer2.SimpleExoPlayer.<init>(com.google.android.exoplayer2.SimpleExoPlayer$Builder) (SimpleExoPlayer.java:610)
        at com.google.android.exoplayer2.SimpleExoPlayer com.google.android.exoplayer2.SimpleExoPlayer$Builder.build() (SimpleExoPlayer.java:513)
        at boolean com.etc.etutorerp.Live.initPlayer() (Live.java:158)
        at void com.etc.etutorerp.Live.onStart() (Live.java:518)
        at void android.app.Instrumentation.callActivityOnStart(android.app.Activity) (Instrumentation.java:1341)
        at void android.app.Activity.performStart() (Activity.java:7200)
        at android.app.Activity android.app.ActivityThread.performLaunchActivity(android.app.ActivityThread$ActivityClientRecord, android.content.Intent) (ActivityThread.java:2920)
        at void android.app.ActivityThread.handleLaunchActivity(android.app.ActivityThread$ActivityClientRecord, android.content.Intent, java.lang.String) (ActivityThread.java:3032)
        at void android.app.ActivityThread.-wrap11(android.app.ActivityThread, android.app.ActivityThread$ActivityClientRecord, android.content.Intent, java.lang.String) (ActivityThread.java:-1)
        at void android.app.ActivityThread$H.handleMessage(android.os.Message) (ActivityThread.java:1696)
        at void android.os.Handler.dispatchMessage(android.os.Message) (Handler.java:105)
        at void android.os.Looper.loop() (Looper.java:164)
        at void android.app.ActivityThread.main(java.lang.String[]) (ActivityThread.java:6942)
        at java.lang.Object java.lang.reflect.Method.invoke(java.lang.Object, java.lang.Object[]) (Method.java:-2)
        at void com.android.internal.os.Zygote$MethodAndArgsCaller.run() (Zygote.java:327)
        at void com.android.internal.os.ZygoteInit.main(java.lang.String[]) (ZygoteInit.java:1374)
    Caused by: java.lang.ClassNotFoundException: Didn't find class "android.media.AudioTrack$StreamEventCallback" on path: DexPathList[[zip file "/data/app/com.etc.etutorerp-r11jQYfvYRpnTFXpBLE9ag==/base.apk"],nativeLibraryDirectories=[/data/app/com.etc.etutorerp-r11jQYfvYRpnTFXpBLE9ag==/lib/arm, /system/lib, /system/vendor/lib]]
        at java.lang.Class dalvik.system.BaseDexClassLoader.findClass(java.lang.String) (BaseDexClassLoader.java:93)
        at java.lang.Class java.lang.ClassLoader.loadClass(java.lang.String, boolean) (ClassLoader.java:379)
        at java.lang.Class java.lang.ClassLoader.loadClass(java.lang.String) (ClassLoader.java:312)
        at com.google.android.exoplayer2.audio.AudioSink com.google.android.exoplayer2.DefaultRenderersFactory.buildAudioSink(android.content.Context, boolean, boolean, boolean) (DefaultRenderersFactory.java:628)
        at com.google.android.exoplayer2.Renderer[] com.google.android.exoplayer2.DefaultRenderersFactory.createRenderers(android.os.Handler, com.google.android.exoplayer2.video.VideoRendererEventListener, com.google.android.exoplayer2.audio.AudioRendererEventListener, com.google.android.exoplayer2.text.TextOutput, com.google.android.exoplayer2.metadata.MetadataOutput) (DefaultRenderersFactory.java:321)
        at void com.google.android.exoplayer2.SimpleExoPlayer.<init>(com.google.android.exoplayer2.SimpleExoPlayer$Builder) (SimpleExoPlayer.java:610)
        at com.google.android.exoplayer2.SimpleExoPlayer com.google.android.exoplayer2.SimpleExoPlayer$Builder.build() (SimpleExoPlayer.java:513)
        at boolean com.etc.etutorerp.Live.initPlayer() (Live.java:158)
        at void com.etc.etutorerp.Live.onStart() (Live.java:518)
        at void android.app.Instrumentation.callActivityOnStart(android.app.Activity) (Instrumentation.java:1341)
        at void android.app.Activity.performStart() (Activity.java:7200)
        at android.app.Activity android.app.ActivityThread.performLaunchActivity(android.app.ActivityThread$ActivityClientRecord, android.content.Intent) (ActivityThread.java:2920)
        at void android.app.ActivityThread.handleLaunchActivity(android.app.ActivityThread$ActivityClientRecord, android.content.Intent, java.lang.String) (ActivityThread.java:3032)
        at void android.app.ActivityThread.-wrap11(android.app.ActivityThread, android.app.ActivityThread$ActivityClientRecord, android.content.Intent, java.lang.String) (ActivityThread.java:-1)
        at void android.app.ActivityThread$H.handleMessage(android.os.Message) (ActivityThread.java:1696)
        at void android.os.Handler.dispatchMessage(android.os.Message) (Handler.java:105)
        at void android.os.Looper.loop() (Looper.java:164)
        at void android.app.ActivityThread.main(java.lang.String[]) (ActivityThread.java:6942)
        at java.lang.Object java.lang.reflect.Method.invoke(java.lang.Object, java.lang.Object[]) (Method.java:-2)
        at void com.android.internal.os.Zygote$MethodAndArgsCaller.run() (Zygote.java:327)
        at void com.android.internal.os.ZygoteInit.main(java.lang.String[]) (ZygoteInit.java:1374)
I/zygote: Rejecting re-init on previously-failed class java.lang.Class<com.google.android.exoplayer2.audio.DefaultAudioSink$StreamEventCallbackV29>: java.lang.NoClassDefFoundError: Failed resolution of: Landroid/media/AudioTrack$StreamEventCallback;
        at com.google.android.exoplayer2.audio.AudioSink com.google.android.exoplayer2.DefaultRenderersFactory.buildAudioSink(android.content.Context, boolean, boolean, boolean) (DefaultRenderersFactory.java:628)
        at com.google.android.exoplayer2.Renderer[] com.google.android.exoplayer2.DefaultRenderersFactory.createRenderers(android.os.Handler, com.google.android.exoplayer2.video.VideoRendererEventListener, com.google.android.exoplayer2.audio.AudioRendererEventListener, com.google.android.exoplayer2.text.TextOutput, com.google.android.exoplayer2.metadata.MetadataOutput) (DefaultRenderersFactory.java:321)
        at void com.google.android.exoplayer2.SimpleExoPlayer.<init>(com.google.android.exoplayer2.SimpleExoPlayer$Builder) (SimpleExoPlayer.java:610)
        at com.google.android.exoplayer2.SimpleExoPlayer com.google.android.exoplayer2.SimpleExoPlayer$Builder.build() (SimpleExoPlayer.java:513)
        at boolean com.etc.etutorerp.Live.initPlayer() (Live.java:158)
        at void com.etc.etutorerp.Live.onStart() (Live.java:518)
        at void android.app.Instrumentation.callActivityOnStart(android.app.Activity) (Instrumentation.java:1341)
        at void android.app.Activity.performStart() (Activity.java:7200)
        at android.app.Activity android.app.ActivityThread.performLaunchActivity(android.app.ActivityThread$ActivityClientRecord, android.content.Intent) (ActivityThread.java:2920)
        at void android.app.ActivityThread.handleLaunchActivity(android.app.ActivityThread$ActivityClientRecord, android.content.Intent, java.lang.String) (ActivityThread.java:3032)
        at void android.app.ActivityThread.-wrap11(android.app.ActivityThread, android.app.ActivityThread$ActivityClientRecord, android.content.Intent, java.lang.String) (ActivityThread.java:-1)
        at void android.app.ActivityThread$H.handleMessage(android.os.Message) (ActivityThread.java:1696)
        at void android.os.Handler.dispatchMessage(android.os.Message) (Handler.java:105)
        at void android.os.Looper.loop() (Looper.java:164)
        at void android.app.ActivityThread.main(java.lang.String[]) (ActivityThread.java:6942)
        at java.lang.Object java.lang.reflect.Method.invoke(java.lang.Object, java.lang.Object[]) (Method.java:-2)
        at void com.android.internal.os.Zygote$MethodAndArgsCaller.run() (Zygote.java:327)
        at void com.android.internal.os.ZygoteInit.main(java.lang.String[]) (ZygoteInit.java:1374)
    Caused by: java.lang.ClassNotFoundException: Didn't find class "android.media.AudioTrack$StreamEventCallback" on path: DexPathList[[zip file "/data/app/com.etc.etutorerp-r11jQYfvYRpnTFXpBLE9ag==/base.apk"],nativeLibraryDirectories=[/data/app/com.etc.etutorerp-r11jQYfvYRpnTFXpBLE9ag==/lib/arm, /system/lib, /system/vendor/lib]]
        at java.lang.Class dalvik.system.BaseDexClassLoader.findClass(java.lang.String) (BaseDexClassLoader.java:93)
        at java.lang.Class java.lang.ClassLoader.loadClass(java.lang.String, boolean) (ClassLoader.java:379)
        at java.lang.Class java.lang.ClassLoader.loadClass(java.lang.String) (ClassLoader.java:312)
        at com.google.android.exoplayer2.audio.AudioSink com.google.android.exoplayer2.DefaultRenderersFactory.buildAudioSink(android.content.Context, boolean, boolean, boolean) (DefaultRenderersFactory.java:628)
        at com.google.android.exoplayer2.Renderer[] com.google.android.exoplayer2.DefaultRenderersFactory.createRenderers(android.os.Handler, com.google.android.exoplayer2.video.VideoRendererEventListener, com.google.android.exoplayer2.audio.AudioRendererEventListener, com.google.android.exoplayer2.text.TextOutput, com.google.android.exoplayer2.metadata.MetadataOutput) (DefaultRenderersFactory.java:321)
        at void com.google.android.exoplayer2.SimpleExoPlayer.<init>(com.google.android.exoplayer2.SimpleExoPlayer$Builder) (SimpleExoPlayer.java:610)
        at com.google.android.exoplayer2.SimpleExoPlayer com.google.android.exoplayer2.SimpleExoPlayer$Builder.build() (SimpleExoPlayer.java:513)
        at boolean com.etc.etutorerp.Live.initPlayer() (Live.java:158)
        at void com.etc.etutorerp.Live.onStart() (Live.java:518)
        at void android.app.Instrumentation.callActivityOnStart(android.app.Activity) (Instrumentation.java:1341)
        at void android.app.Activity.performStart() (Activity.java:7200)
        at android.app.Activity android.app.ActivityThread.performLaunchActivity(android.app.ActivityThread$ActivityClientRecord, android.content.Intent) (ActivityThread.java:2920)
        at void android.app.ActivityThread.handleLaunchActivity(android.app.ActivityThread$ActivityClientRecord, android.content.Intent, java.lang.String) (ActivityThread.java:3032)
        at void android.app.ActivityThread.-wrap11(android.app.ActivityThread, android.app.ActivityThread$ActivityClientRecord, android.content.Intent, java.lang.String) (ActivityThread.java:-1)
        at void android.app.ActivityThread$H.handleMessage(android.os.Message) (ActivityThread.java:1696)
        at void android.os.Handler.dispatchMessage(android.os.Message) (Handler.java:105)
        at void android.os.Looper.loop() (Looper.java:164)
        at void android.app.ActivityThread.main(java.lang.String[]) (ActivityThread.java:6942)
        at java.lang.Object java.lang.reflect.Method.invoke(java.lang.Object, java.lang.Object[]) (Method.java:-2)
        at void com.android.internal.os.Zygote$MethodAndArgsCaller.run() (Zygote.java:327)
        at void com.android.internal.os.ZygoteInit.main(java.lang.String[]) (ZygoteInit.java:1374)

2. second question when use firbase video url get this error

second error
E/ExoPlayerImplInternal: Playback error
      com.google.android.exoplayer2.ExoPlaybackException: Source error
        at com.google.android.exoplayer2.ExoPlayerImplInternal.handleMessage(ExoPlayerImplInternal.java:554)
        at android.os.Handler.dispatchMessage(Handler.java:101)
        at android.os.Looper.loop(Looper.java:164)
        at android.os.HandlerThread.run(HandlerThread.java:65)
     Caused by: com.google.android.exoplayer2.upstream.HttpDataSource$InvalidResponseCodeException: Response code: 403
        at com.google.android.exoplayer2.ext.cronet.CronetDataSource.open(CronetDataSource.java:480)
        at com.google.android.exoplayer2.upstream.DefaultDataSource.open(DefaultDataSource.java:193)
        at com.google.android.exoplayer2.upstream.cache.CacheDataSource.openNextSource(CacheDataSource.java:764)
        at com.google.android.exoplayer2.upstream.cache.CacheDataSource.open(CacheDataSource.java:579)
        at com.google.android.exoplayer2.upstream.StatsDataSource.open(StatsDataSource.java:84)
        at com.google.android.exoplayer2.source.ProgressiveMediaPeriod$ExtractingLoadable.load(ProgressiveMediaPeriod.java:1013)
        at com.google.android.exoplayer2.upstream.Loader$LoadTask.run(Loader.java:415)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1162)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636)
        at java.lang.Thread.run(Thread.java:764)

3. When pass sample ads url IntentUtil
Ads url : https://pubads.g.doubleclick.net/gampad/ads?sz=640x480&iu=/124319096/external/single_ad_samples&ciu_szs=300x250&impl=s&gdfp_req=1&env=vp&output=vast&unviewed_position_start=1&cust_params=deployment%3Ddevsite%26sample_ct%3Dskippablelinear&correlator=

get another error
W/IMASDK: Invalid internal message, ignoring. Please make sure the Google IMA SDK library is up to date. Message: gmsg://afma.google.com/activityMonitor?type=getPageSignals&sid=57bafb10-a40a-4d95-956d-c54622958455&dt=1602192856893
D/IMASDK: Received js message: adsManager [loaded]
D/IMASDK: Received js message: videoDisplay1 [startTracking]
D/IMASDK: Received js message: videoDisplay1 [load]
D/IMASDK: Received js message: adsManager [contentPauseRequested]
D/IMASDK: Received js message: videoDisplay1 [activate]
D/IMASDK: Received js message: videoDisplay1 [startTracking]
D/IMASDK: Received js message: activityMonitor [getViewability]
D/IMASDK: Sending js message: activityMonitor [viewability]
D/IMASDK: Received js message: displayContainer [showVideo]
D/IMASDK: Received js message: videoDisplay1 [play]
D/AndroidRuntime: Shutting down VM
E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.etc.etutorerp, PID: 19633
    java.lang.AbstractMethodError: abstract method "void com.google.android.exoplayer2.source.ads.AdsLoader.handlePrepareComplete(int, int)"
        at com.google.android.exoplayer2.source.ads.AdsMediaSource$AdPrepareListener.lambda$onPrepareComplete$0$AdsMediaSource$AdPrepareListener(AdsMediaSource.java:392)
        at com.google.android.exoplayer2.source.ads.-$$Lambda$AdsMediaSource$AdPrepareListener$fKnX3U0AN4mPVLC978gwlh8u4Wo.run(Unknown Source:4)
        at android.os.Handler.handleCallback(Handler.java:789)
        at android.os.Handler.dispatchMessage(Handler.java:98)
        at android.os.Looper.loop(Looper.java:164)
        at android.app.ActivityThread.main(ActivityThread.java:6942)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:327)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1374)

[tonihei]

NoClassDefFoundError is usually a sign of build setup problem. Please also see this answer to a similar question.

[tonihei]

I'm sorry, but don't really understand what you are asking. If you'd like to report an issue, please fill out the issue template completely and explain your problem in more detail. Thanks!

[hinditutorpoint]

sir i we play video get audio sink error
Failed resolution of:

Landroid/media/AudioTrack$StreamEventCallback;
at com.google.android.exoplayer2.audio.AudioSink com.google.android.exoplayer2.DefaultRenderersFactory.buildAudioSink(android.content.Context, boolean, boolean, boolean) (DefaultRenderersFactory.java:628)

[tonihei]

Which Android version is your device running on?

[hinditutorpoint]

Samsung Galexy J5 Prime
Oreo

[hinditutorpoint]

ver 8.0.0

[gelin]

Got the same issue, the Didn't find class "android.media.AudioTrack$StreamEventCallback" when running ExoPlayer 2.12.0 on Android TV emulator with Android 8 (SDK 26) installed. The compileSdkVersion and targetSdkVersion are set to 29, while minSdkVersion is 21.
the StreamEventCallback was added in API 29. Probably, AudioSink doesn't correctly checks the runtime SDK version.
ExoPlayer 2.11.8 has no such issue.

[tonihei]

@gelin I have no issue playing video in the ExoPlayer demo app with the Android TV emulator on SDK 26, nor do I have problems on an actual phone on SDK 23. Could you make sure to try a clean build and report detailed reproduction steps if the problem persists?

[hinditutorpoint]

yes sir i am also clean and rebuild project again got same problem.
Video playing perfect but log display audio sink issue and when pass the ads url in IntentUtil got another error mention above.

[gelin]

@tonihei, @hinditutorpoint points the issue. The video (and audio) in the demo app works correctly on SDK 26 emulator. But this error message about the absence of the android.media.AudioTrack$StreamEventCallback class (with a very long stack trace) appears in the logs (on each playback start). This log message doesn't affect the functionality.

I was confused by the HEVC (hvc1) codec, which looks like not supported by the emulator. I thought this error message in logs is the cause of the HEVC video playback failure.

[tonihei]

@krocard Can you have a look to see where this is coming from?

[hinditutorpoint]

@gelin but sir i check my real android Oreo phone 8.0 not emulator and when this project run on my old android which is kitkat
crash application.

[krocard]

java.lang.Class<com.google.android.exoplayer2.audio.DefaultAudioSink$StreamEventCallbackV29>: java.lang.NoClassDefFoundError: Failed resolution of: Landroid/media/AudioTrack$StreamEventCallback;
at com.google.android.exoplayer2.audio.AudioSink com.google.android.exoplayer2.DefaultRenderersFactory.buildAudioSink(android.content.Context, boolean, boolean, boolean)

I don't understand how this is possible AudioTrack.StreamEventCallback is only used by StreamEventCallbackV29 as base class:

ExoPlayer/library/core/src/main/java/com/google/android/exoplayer2/audio/DefaultAudioSink.java

Lines 1681 to 1682 in d386d03

	@RequiresApi(29)
	private final class StreamEventCallbackV29 extends AudioTrack.StreamEventCallback {

and StreamEventCallbackV29 is only instantiated by registerStreamEventCallback:

ExoPlayer/library/core/src/main/java/com/google/android/exoplayer2/audio/DefaultAudioSink.java

Lines 842 to 850 in d386d03

	@RequiresApi(29)
	private void registerStreamEventCallbackV29(AudioTrack audioTrack) {
	if (offloadStreamEventCallbackV29 == null) {
	// Must be lazily initialized to receive stream event callbacks on the current (playback)
	// thread as the constructor is not called in the playback thread.
	offloadStreamEventCallbackV29 = new StreamEventCallbackV29();
	}
	offloadStreamEventCallbackV29.register(audioTrack);
	}

Which is only called if the AudioTrack is offload:

ExoPlayer/library/core/src/main/java/com/google/android/exoplayer2/audio/DefaultAudioSink.java

Lines 631 to 632 in d386d03

	if (isOffloadedPlayback(audioTrack)) {
	registerStreamEventCallbackV29(audioTrack);

Which requires API > 29:

ExoPlayer/library/core/src/main/java/com/google/android/exoplayer2/audio/DefaultAudioSink.java

Lines 1502 to 1504 in d386d03

	private static boolean isOffloadedPlayback(AudioTrack audioTrack) {
	return Util.SDK_INT >= 29 && audioTrack.isOffloadedPlayback();
	}

And only when so, will StreamEventCallbackV29 be created

Could @MonotonicNonNull force the class to be allocated early?

ExoPlayer/library/core/src/main/java/com/google/android/exoplayer2/audio/DefaultAudioSink.java

Line 291 in d386d03

@MonotonicNonNull private StreamEventCallbackV29 offloadStreamEventCallbackV29;

Or maybe it has to do with an optimisation (Progard?), as the stack trace is missing the call to DefaultAudioTrack constructor.

java.lang.NoClassDefFoundError: Failed resolution of: Landroid/media/AudioTrack$StreamEventCallback;
at com.google.android.exoplayer2.audio.AudioSink com.google.android.exoplayer2.DefaultRenderersFactory.buildAudioSink(android.content.Context, boolean, boolean, boolean)

[Internal: This is similar to b/161961414]

[krocard]

I can reproduce on the emulator (API 27).
Here is what I have tried that does not get rid of the inner class StreamEventCallbackV29 loading if API < 29:

• make it static inner
• make it a separate top level class instead of an inner class
• store in an Object reference
• remove @MonotonicNonNull
• remove all calls to the class constructor (aka the class is never constructed)
• add an explicit if (Util.SDK_INT >= 29) around all lines that interact with StreamEventCallbackV29 (aka inilining isOffloadedPlayback)

What worked (no NoClassDefFoundError):

• remove the class construction AND the reference to the class (that is equivalent to removing the feature, so it's not useful)
• use an anonymous class to derive AudioTrack.StreamEventCallback !

I will upload a fix. It boils down to instead of using a inner class that derive the callback as it is done now:

ExoPlayer/library/core/src/main/java/com/google/android/exoplayer2/audio/DefaultAudioSink.java

Lines 1681 to 1684 in d386d03

	@RequiresApi(29)
	private final class StreamEventCallbackV29 extends AudioTrack.StreamEventCallback {
	private final Handler handler;

To instead use an inner class in a method:

      streamEventCallbackV29 = new AudioTrack.StreamEventCallback(){
      @Override
      public void onDataRequest(AudioTrack track, int size) {

I guess the JVM loads all the classes used (referenced and newed) by a class except for anonymous class? Definitely a puzzling behaviour.

[krocard]

Interestingly, the same pattern that causes problem for StreamEventCallback is used for MediaCodec.OnFrameRenderedListener:
https://github.com/google/ExoPlayer/blob/r2.12.0/library/core/src/main/java/com/google/android/exoplayer2/video/MediaCodecVideoRenderer.java#L1752-L1754
The difference is that MediaCodec.OnFrameRenderedListener is an interface and not an class.
Thus API specific interfaces can be freely implemented as long as not used in API level where they do not exist.
On the contrary API classes seems to only be safely inherited by anonymous classes.

[hinditutorpoint]

Got any solution for this issue sir

[krocard]

The issue is fixed by 230f4e5.

[krocard]

@hinditutorpoint, in #8058 (comment) you seem to suggest that the issue is causing an application crash on your KitKat device.
Can you confirm that this AudioTrack$StreamEventCallback NoClassDefFoundError indeed crashes your application? In my testing, I have only ever observed a warning log, never an actual crash.
I will update the release note if it is confirm to cause a crash.

[hinditutorpoint]

Thanks for fix this problem sir