我有兩個MPEG-TS + H.264視頻文件,這是我嘗試與ExoPlayer Android裝置(三星標籤甲10.1" )上讀取:MPEG-TS H.264與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);
第一個成功(圖像正確顯示),但第二個失敗(沒有圖像顯示),雖然它們在視頻特性方面都非常相似,但我想了解其原因。視頻編碼細節
第一個視頻(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(失敗):
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個流之間的唯一區別是支持的參考幀的數量。這不太可能是一個問題,因爲玩家將擁有一個通用的解碼器,但仍然可以通過僅使用2個參考幀嘗試其他序列來進行檢查? – prashanthns