尝试将HEVC编码的视频复用到Samsung Galaxy S6上的MediaMuxer MPEG-4容器中。
MediaFormat（从MediaCodec获得）：
{height=1080, width=1920, max_capacity=8847360, what=1869968451, mime=video/hevc, csd-0=java.nio.ByteArrayBuffer[position=0,limit=76,capacity=76], remained_resource=6773760}
csd-0 出现在那里，根据表格in the docs
，这对于H265 / hevc来说已经足够了 MediaMuxer根据此格式创建索引为0的视频轨道。在编写了一些示例然后调用mediaMuxer.stop()之后，抛出IllegalStateException并在logcat中显示以下内容：
E/MPEG4Writer: Missing codec specific data D/MPEG4Writer: Video track stopping D/MPEG4Writer: Video track source stopping D/MPEG4Writer: Video track source stopped I/MPEG4Writer: Received total/0-length (247/0) buffers and encoded 247 frames. - Audio I/MPEG4Writer: Audio track drift time: 0 us I/MPEG4Writer: Received total/0-length (173/0) buffers and encoded 173 frames. - Video D/MPEG4Writer: Video track stopped D/MPEG4Writer: Audio track stopping D/MPEG4Writer: Audio track source stopping D/MPEG4Writer: Audio track source stopped D/MPEG4Writer: Audio track stopped D/MPEG4Writer: Duration from tracks range is [5744606, 5764430] us D/MPEG4Writer: Stopping writer thread D/MPEG4Writer: 0 chunks are written in the last batch D/MPEG4Writer: Writer thread stopped E/MP4FileMuxer: finish: stop or release failed java.lang.IllegalStateException: Failed to stop the muxer
生成的MP4文件无法播放。可能是什么问题？
答案 0 :(得分：2)
所以，回答我自己的问题：似乎＆＃34;视频/ hevc＆＃34; MediaMuxer仅支持从Android 7.0 r1开始支持（即使使用N-preview-5也无法使用）。看起来MediaMuxer.addTrack()的文档已经更新以反映这一点。
相关的AOSP代码：
MPEG4Writer.cpp on N preview 5 - no HEVC support
MPEG4Writer.cpp on N r1 - HEVC bits and pieces everywhere
不幸的是，有些Marshmallow设备支持HEVC视频编码（例如Samsung Exynos），但是使用MediaMuxer将其转储到MP4文件中将无效，因此需要自定义解决方案。