Change original Playback Framerate

[redstringhk]

Hello,

How I can change the original playback framerate? Do i need to modify the native code or just call a function in the app? Just want to play the high resolution video smoother on low-end devices.

thanks!

[bbcallen]

If you mean drop frame, try search skip_frame, skip_loop_filter.

[redstringhk]

Thanks.

So, there is no use with the ffp_set_max_fps(FFPlayer *ffp, int max_fps); to limit the max fps?

[bbcallen]

Most h264 video I've seen, is about 24fps or 30fps.
ffp_set_max_fps() is a trick to deal with unexpected insane high-fps (such as 50 fps),
by set skip_frame/skip_loop_filter to the lowest acceptable value.

If your video compression parameters is predictable, go ahead to hardcode these options directly.
ffp_set_codec_option("skip_loop_filter", "8"); // 8 for AVDISCARD_NONREF
ffp_set_codec_option("skip_loop_filter", "8"); // 8 for AVDISCARD_NONREF

[redstringhk]

Thanks, will give it a try.

[redstringhk]

Thanks for your advice. Video playback is ok now. But i got another problem on playback ADPCM audio track. it keeps buffering after 30 to 40. Can i change a lower sample rate or just use mono for audio playback?

[bbcallen]

Is it audio only resource? I haven't tested that situation.

Search audio_open for sample rate and channel control.

[redstringhk]

it's H264/ADPCM. Tried to lower the sample rate and mono audio but still got the same buffering problem.

[redstringhk]

BTW, i have found the current display time is outsync with the playback video. Do you know which area should i look at. I have tried to modify the ijkmp_get_current_position() but seems not work.

[redstringhk]

Sorry, overlook there is an ffp->av_sync_type options.
After setting to AV_SYNC_VIDEO_MASTER, it fixes the incorrect time display problem.

[bbcallen]

Can you share the test stream?

[redstringhk]

Will create an sample stream, can i share to your gmail?

[redstringhk]

Just shared an sample stream to your gmail, really appreciate if you can check it out when you have time. The stream format is H264/ADPCM. I am building an android player.

[bbcallen]

supported: 6ce6e14