diff --git a/BUILD.gn b/BUILD.gn
index 68cd6c64d96..3276cce736f 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -206,6 +206,8 @@ config("common_inherited_config") {
 
   if (!rtc_use_h265) {
     defines += [ "DISABLE_H265" ]
+  } else {
+    defines += [ "OWT_USE_H265" ]
   }
 }
 
diff --git a/modules/rtp_rtcp/BUILD.gn b/modules/rtp_rtcp/BUILD.gn
index eec93dd947b..58db2f0c4b0 100644
--- a/modules/rtp_rtcp/BUILD.gn
+++ b/modules/rtp_rtcp/BUILD.gn
@@ -206,6 +206,8 @@ rtc_static_library("rtp_rtcp") {
 
   if (!rtc_use_h265) {
     defines += ["DISABLE_H265"]
+  } else {
+    defines += [ "OWT_USE_H265" ]
   }
 
   deps = [
diff --git a/sdk/BUILD.gn b/sdk/BUILD.gn
index fe8bde3cbbc..fbac8619b3e 100644
--- a/sdk/BUILD.gn
+++ b/sdk/BUILD.gn
@@ -556,6 +556,16 @@ if (is_ios || is_mac) {
         "objc/components/video_codec/RTCH264ProfileLevelId.h",
         "objc/components/video_codec/RTCH264ProfileLevelId.mm",
       ]
+      if (rtc_use_h265) {
+        sources += [
+          # TODO: Split this file.
+          "objc/Framework/Headers/WebRTC/RTCVideoCodecH265.h",
+          "objc/components/video_codec/RTCCodecSpecificInfoH265+Private.h",
+          "objc/components/video_codec/RTCCodecSpecificInfoH265.h",
+          "objc/components/video_codec/RTCCodecSpecificInfoH265.mm",
+          "objc/components/video_codec/RTCVideoCodecH265.mm",
+        ]
+      }
       if (is_ios) {
         sources += [
           "objc/components/video_codec/UIDevice+H264Profile.h",
@@ -1631,13 +1641,16 @@ if (is_ios || is_mac) {
         "objc/components/video_codec/RTCVideoEncoderFactoryH264.m",
         "objc/components/video_codec/RTCVideoEncoderH264.h",
         "objc/components/video_codec/RTCVideoEncoderH264.mm",
-        "objc/Framework/Headers/WebRTC/RTCVideoCodecH265.h",
-        "objc/components/video_codec/RTCVideoEncoderH265.mm",
-        "objc/components/video_codec/RTCVideoCodecH265.mm",
-        "objc/components/video_codec/RTCVideoDecoderH265.h",
-        "objc/components/video_codec/RTCVideoDecoderH265.mm",
       ]
 
+      if (rtc_use_h265) {
+        sources += [
+          "objc/components/video_codec/RTCVideoDecoderH265.h",
+          "objc/components/video_codec/RTCVideoDecoderH265.mm",
+          "objc/components/video_codec/RTCVideoEncoderH265.mm",
+        ]
+      }
+
       configs += [
         "..:common_objc",
         ":used_from_extension",
diff --git a/sdk/objc/Framework/Headers/WebRTC/RTCVideoCodecH265.h b/sdk/objc/Framework/Headers/WebRTC/RTCVideoCodecH265.h
index 35157af596f..ac7557a394d 100644
--- a/sdk/objc/Framework/Headers/WebRTC/RTCVideoCodecH265.h
+++ b/sdk/objc/Framework/Headers/WebRTC/RTCVideoCodecH265.h
@@ -15,10 +15,7 @@
 #import <WebRTC/RTCMacros.h>
 #import <WebRTC/RTCVideoCodecFactory.h>
 
-RTC_OBJC_EXPORT
-API_AVAILABLE(ios(11.0))
-@interface RTCCodecSpecificInfoH265 : NSObject <RTCCodecSpecificInfo>
-@end
+RTC_OBJC_EXPORT extern NSString *const kRTCVideoCodecH265Name;
 
 /** Encoder. */
 RTC_OBJC_EXPORT
diff --git a/sdk/objc/components/video_codec/RTCCodecSpecificInfoH265+Private.h b/sdk/objc/components/video_codec/RTCCodecSpecificInfoH265+Private.h
new file mode 100644
index 00000000000..a22d3594f55
--- /dev/null
+++ b/sdk/objc/components/video_codec/RTCCodecSpecificInfoH265+Private.h
@@ -0,0 +1,25 @@
+/*
+ *  Copyright 2017 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+/* This file is borrowed from sdk/objc/components/video_codec/RTCCodecSpecificInfoH264+Private.h */
+
+#import "RTCCodecSpecificInfoH265.h"
+
+#include "modules/video_coding/include/video_codec_interface.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+/* Interfaces for converting to/from internal C++ formats. */
+@interface RTCCodecSpecificInfoH265 ()
+
+- (webrtc::CodecSpecificInfo)nativeCodecSpecificInfo;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/sdk/objc/components/video_codec/RTCCodecSpecificInfoH265.h b/sdk/objc/components/video_codec/RTCCodecSpecificInfoH265.h
new file mode 100644
index 00000000000..82865a9cdb4
--- /dev/null
+++ b/sdk/objc/components/video_codec/RTCCodecSpecificInfoH265.h
@@ -0,0 +1,28 @@
+/*
+ *  Copyright 2017 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+/* This file is borrowed from sdk/objc/components/video_codec/RTCCodecSpecificInfoH264.h. */
+
+#import <Foundation/Foundation.h>
+
+#import "RTCCodecSpecificInfo.h"
+#import "RTCMacros.h"
+
+/** Class for H265 specific config. */
+typedef NS_ENUM(NSUInteger, RTCH265PacketizationMode) {
+  RTCH265PacketizationModeNonInterleaved = 0,  // Mode 1 - STAP-A, FU-A is allowed
+  RTCH265PacketizationModeSingleNalUnit        // Mode 0 - only single NALU allowed
+};
+
+RTC_OBJC_EXPORT
+@interface RTCCodecSpecificInfoH265 : NSObject <RTCCodecSpecificInfo>
+
+@property(nonatomic, assign) RTCH265PacketizationMode packetizationMode;
+
+@end
diff --git a/sdk/objc/components/video_codec/RTCCodecSpecificInfoH265.mm b/sdk/objc/components/video_codec/RTCCodecSpecificInfoH265.mm
new file mode 100644
index 00000000000..94a46985f72
--- /dev/null
+++ b/sdk/objc/components/video_codec/RTCCodecSpecificInfoH265.mm
@@ -0,0 +1,28 @@
+/*
+ *  Copyright 2017 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+ /* This file is borrowed from sdk/objc/components/video_codec/RTCCodecSpecificInfoH264.mm */
+
+#import "RTCCodecSpecificInfoH265+Private.h"
+
+// H265 specific settings.
+@implementation RTCCodecSpecificInfoH265
+
+@synthesize packetizationMode = _packetizationMode;
+
+- (webrtc::CodecSpecificInfo)nativeCodecSpecificInfo {
+  webrtc::CodecSpecificInfo codecSpecificInfo;
+  codecSpecificInfo.codecType = webrtc::kVideoCodecH265;
+  codecSpecificInfo.codecSpecific.H265.packetization_mode =
+      (webrtc::H265PacketizationMode)_packetizationMode;
+
+  return codecSpecificInfo;
+}
+
+@end
diff --git a/sdk/objc/components/video_codec/RTCVideoCodecH265.mm b/sdk/objc/components/video_codec/RTCVideoCodecH265.mm
index ac890e3e122..e2bb9866cb0 100644
--- a/sdk/objc/components/video_codec/RTCVideoCodecH265.mm
+++ b/sdk/objc/components/video_codec/RTCVideoCodecH265.mm
@@ -11,22 +11,20 @@
 /* This file is borrowed from
  * webrtc/sdk/objc/Framework/Classes/PeerConnection/RTCVideoCodecH265.mm */
 
+#import "WebRTC/RTCVideoCodec.h"
 #import "WebRTC/RTCVideoCodecH265.h"
 
 #include <vector>
-
-#import "WebRTC/RTCVideoCodec.h"
-
+#include "media/base/media_constants.h"
 #include "rtc_base/time_utils.h"
 #include "system_wrappers/include/field_trial.h"
 
+NSString *const kRTCVideoCodecH265Name = @(cricket::kH265CodecName);
+
 static NSString* kH265CodecName = @"H265";
 // TODO(jianjunz): This is value is not correct.
 static NSString* kLevel31Main = @"4d001f";
 
-@implementation RTCCodecSpecificInfoH265
-@end
-
 // Encoder factory.
 @implementation RTCVideoEncoderFactoryH265
 
diff --git a/sdk/objc/components/video_codec/RTCVideoEncoderH265.mm b/sdk/objc/components/video_codec/RTCVideoEncoderH265.mm
index bbceb1ebb44..ed280b23aab 100644
--- a/sdk/objc/components/video_codec/RTCVideoEncoderH265.mm
+++ b/sdk/objc/components/video_codec/RTCVideoEncoderH265.mm
@@ -9,17 +9,19 @@
  *
  */
 
-#import "WebRTC/RTCVideoCodecH265.h"
-
 #import <VideoToolbox/VideoToolbox.h>
-#include <vector>
-
-#if defined(WEBRTC_IOS)
-#import "helpers/UIDevice+RTCDevice.h"
-#endif
+#import "RTCCodecSpecificInfoH265.h"
 #import "WebRTC/RTCVideoCodec.h"
+#import "WebRTC/RTCVideoCodecH265.h"
 #import "WebRTC/RTCVideoFrame.h"
 #import "WebRTC/RTCVideoFrameBuffer.h"
+#import "helpers.h"
+#import "sdk/objc/Framework/Classes/PeerConnection/RTCVideoCodec+Private.h"
+#if defined(WEBRTC_IOS)
+#import "helpers/UIDevice+RTCDevice.h"
+#endif
+
+#include <vector>
 #include "common_video/h264/profile_level_id.h"
 #include "common_video/include/bitrate_adjuster.h"
 #include "libyuv/convert_from.h"
@@ -28,8 +30,6 @@
 #include "rtc_base/buffer.h"
 #include "rtc_base/logging.h"
 #include "rtc_base/time_utils.h"
-#import "sdk/objc/Framework/Classes/PeerConnection/RTCVideoCodec+Private.h"
-#import "helpers.h"
 #include "sdk/objc/Framework/Classes/VideoToolbox/nalu_rewriter.h"
 #include "system_wrappers/include/clock.h"
 
diff --git a/sdk/objc/components/video_codec/nalu_rewriter.cc b/sdk/objc/components/video_codec/nalu_rewriter.cc
index 9c6d18e79ef..29710034d7b 100644
--- a/sdk/objc/components/video_codec/nalu_rewriter.cc
+++ b/sdk/objc/components/video_codec/nalu_rewriter.cc
@@ -248,6 +248,7 @@ bool H264AnnexBBufferToCMSampleBuffer(const uint8_t* annexb_buffer,
   return true;
 }
 
+#ifdef OWT_USE_H265
 bool H265CMSampleBufferToAnnexBBuffer(
     CMSampleBufferRef hvcc_sample_buffer,
     bool is_keyframe,
@@ -474,6 +475,7 @@ bool H265AnnexBBufferToCMSampleBuffer(const uint8_t* annexb_buffer,
   CFRelease(contiguous_buffer);
   return true;
 }
+#endif
 
 CMVideoFormatDescriptionRef CreateVideoFormatDescription(
     const uint8_t* annexb_buffer,
@@ -505,6 +507,7 @@ CMVideoFormatDescriptionRef CreateVideoFormatDescription(
   return description;
 }
 
+#ifdef OWT_USE_H265
 CMVideoFormatDescriptionRef CreateH265VideoFormatDescription(
     const uint8_t* annexb_buffer,
     size_t annexb_buffer_size) {
@@ -539,6 +542,7 @@ CMVideoFormatDescriptionRef CreateH265VideoFormatDescription(
   }
   return description;
 }
+#endif
 
 AnnexBBufferReader::AnnexBBufferReader(const uint8_t* annexb_buffer,
                                        size_t length)
@@ -587,6 +591,7 @@ bool AnnexBBufferReader::SeekToNextNaluOfType(NaluType type) {
   return false;
 }
 
+#ifdef OWT_USE_H265
 bool AnnexBBufferReader::SeekToNextNaluOfType(H265::NaluType type) {
   for (; offset_ != offsets_.end(); ++offset_) {
     if (offset_->payload_size < 1)
@@ -596,6 +601,7 @@ bool AnnexBBufferReader::SeekToNextNaluOfType(H265::NaluType type) {
   }
   return false;
 }
+#endif
 
 AvccBufferWriter::AvccBufferWriter(uint8_t* const avcc_buffer, size_t length)
     : start_(avcc_buffer), offset_(0), length_(length) {
diff --git a/sdk/objc/components/video_codec/nalu_rewriter.h b/sdk/objc/components/video_codec/nalu_rewriter.h
index f0118a144c4..685855579c8 100644
--- a/sdk/objc/components/video_codec/nalu_rewriter.h
+++ b/sdk/objc/components/video_codec/nalu_rewriter.h
@@ -18,7 +18,9 @@
 #include <vector>
 
 #include "common_video/h264/h264_common.h"
+#ifdef OWT_USE_H265
 #include "common_video/h265/h265_common.h"
+#endif
 #include "modules/include/module_common_types.h"
 #include "rtc_base/buffer.h"
 
@@ -48,6 +50,7 @@ bool H264AnnexBBufferToCMSampleBuffer(const uint8_t* annexb_buffer,
                                       CMSampleBufferRef* out_sample_buffer,
                                       CMMemoryPoolRef memory_pool);
 
+#ifdef OWT_USE_H265
 // Converts a sample buffer emitted from the VideoToolbox encoder into a buffer
 // suitable for RTP. The sample buffer is in hvcc format whereas the rtp buffer
 // needs to be in Annex B format. Data is written directly to |annexb_buffer|
@@ -70,6 +73,7 @@ bool H265AnnexBBufferToCMSampleBuffer(const uint8_t* annexb_buffer,
                                       CMVideoFormatDescriptionRef video_format,
                                       CMSampleBufferRef* out_sample_buffer)
     __OSX_AVAILABLE_STARTING(__MAC_10_12, __IPHONE_11_0);
+#endif
 
 // Returns a video format description created from the sps/pps information in
 // the Annex B buffer. If there is no such information, nullptr is returned.
@@ -78,10 +82,12 @@ CMVideoFormatDescriptionRef CreateVideoFormatDescription(
     const uint8_t* annexb_buffer,
     size_t annexb_buffer_size);
 
+#ifdef OWT_USE_H265
 CMVideoFormatDescriptionRef CreateH265VideoFormatDescription(
     const uint8_t* annexb_buffer,
     size_t annexb_buffer_size)
     __OSX_AVAILABLE_STARTING(__MAC_10_12, __IPHONE_11_0);
+#endif
 
 // Helper class for reading NALUs from an RTP Annex B buffer.
 class AnnexBBufferReader final {
@@ -107,7 +113,9 @@ class AnnexBBufferReader final {
   // Return true if a NALU of the desired type is found, false if we
   // reached the end instead
   bool SeekToNextNaluOfType(H264::NaluType type);
+#ifdef OWT_USE_H265
   bool SeekToNextNaluOfType(H265::NaluType type);
+#endif
 
  private:
   // Returns the the next offset that contains NALU data.
diff --git a/sdk/objc/native/src/objc_video_encoder_factory.mm b/sdk/objc/native/src/objc_video_encoder_factory.mm
index 989a402911f..33c03bba92e 100644
--- a/sdk/objc/native/src/objc_video_encoder_factory.mm
+++ b/sdk/objc/native/src/objc_video_encoder_factory.mm
@@ -15,6 +15,9 @@
 #import "base/RTCVideoEncoder.h"
 #import "base/RTCVideoEncoderFactory.h"
 #import "components/video_codec/RTCCodecSpecificInfoH264+Private.h"
+#ifdef OWT_USE_H265
+#import "components/video_codec/RTCCodecSpecificInfoH265+Private.h"
+#endif
 #import "sdk/objc/api/peerconnection/RTCEncodedImage+Private.h"
 #import "sdk/objc/api/peerconnection/RTCRtpFragmentationHeader+Private.h"
 #import "sdk/objc/api/peerconnection/RTCVideoCodecInfo+Private.h"
@@ -62,6 +65,11 @@ int32_t RegisterEncodeCompleteCallback(EncodedImageCallback *callback) override
       if ([NSStringFromClass([info class]) isEqual:@"RTCCodecSpecificInfoH264"]) {
         // if ([info isKindOfClass:[RTCCodecSpecificInfoH264 class]]) {
         codecSpecificInfo = [(RTCCodecSpecificInfoH264 *)info nativeCodecSpecificInfo];
+#ifdef OWT_USE_H265
+      } else if ([NSStringFromClass([info class]) isEqual:@"RTCCodecSpecificInfoH265"]) {
+        // if ([info isKindOfClass:[RTCCodecSpecificInfoH265 class]]) {
+        codecSpecificInfo = [(RTCCodecSpecificInfoH265 *)info nativeCodecSpecificInfo];
+#endif
       }
 
       std::unique_ptr<RTPFragmentationHeader> fragmentationHeader =