我有两个MPEG-TS + H.264视频文件,这是我尝试与ExoPlayer Android装置(三星标签甲10.1" )上读取:MPEG-TS H.264与ExoPlayer
SimpleExoPlayerView view = new SimpleExoPlayerView(this);
TrackSelection.Factory videoTrackSelectionFactory = new AdaptiveVideoTrackSelection.Factory(new DefaultBandwidthMeter());
TrackSelector trackSelector = new DefaultTrackSelector(videoTrackSelectionFactory);
SimpleExoPlayer mediaPlayer = ExoPlayerFactory.newSimpleInstance(this, trackSelector, new DefaultLoadControl());
DataSource.Factory dataSourceFactory = new DefaultDataSourceFactory(this, Util.getUserAgent(this, getString(R.string.app_name)));
ExtractorsFactory extractorsFactory = new DefaultExtractorsFactory();
MediaSource source = new ExtractorMediaSource(uri, dataSourceFactory, extractorsFactory, null, null);
view.setPlayer(mediaPlayer);
mediaPlayer.setPlayWhenReady(true);
mediaPlayer.prepare(source);
第一个成功(图像正确显示),但第二个失败(没有图像显示),虽然它们在视频特性方面都非常相似,但我想了解其原因。视频编码细节
第一个视频(成功FUL):
General
ID : 0 (0x0)
Complete name : 1080i.ts
Format : MPEG-TS
File size : 56.7 MiB
Duration : 47s 456ms
Overall bit rate mode : Constant
Overall bit rate : 10.0 Mbps
Video
ID : 256 (0x100)
Menu ID : 1 (0x1)
Format : AVC
Format/Info : Advanced Video Codec
Format profile : [email protected]
Format settings, CABAC : Yes
Format settings, ReFrames : 2 frames
Codec ID : 27
Duration : 47s 282ms
Bit rate : 9 185 Kbps
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate : 29.970 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : MBAFF
Bits/(Pixel*Frame) : 0.148
Stream size : 51.8 MiB (91%)
第二部影片(失败):
General
ID : 1 (0x1)
Complete name : fr5.ts
Format : MPEG-TS
File size : 13.8 MiB
Duration : 32s 270ms
Overall bit rate mode : Variable
Overall bit rate : 3 557 Kbps
Video
ID : 420 (0x1A4)
Menu ID : 1045 (0x415)
Format : AVC
Format/Info : Advanced Video Codec
Format profile : [email protected]
Format settings, CABAC : Yes
Format settings, ReFrames : 4 frames
Codec ID : 27
Duration : 31s 760ms
Bit rate : 3 252 Kbps
Width : 1 920 pixels
Height : 1 080 pixels
Display aspect ratio : 16:9
Frame rate : 25.000 fps
Standard : Component
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : MBAFF
Bits/(Pixel*Frame) : 0.063
Stream size : 12.3 MiB (89%)
Color primaries : BT.709
Transfer characteristics : BT.709
Matrix coefficients : BT.709
2个流之间的唯一区别是支持的参考帧的数量。这不太可能是一个问题,因为玩家将拥有一个通用的解码器,但仍然可以通过仅使用2个参考帧尝试其他序列来进行检查? – prashanthns