Hello, I'm trying to remux a MXF XAVC file with the exact same video but only 2 out of the 4 audio tracks. For that I use this command: ffmpeg -i INPUT_FILE -c copy -map 0:v -map 0:a:0 -map 0:a:1 OUTPUT_FILE
The thing is, some video data are lost during the remux as my file is smaller than it should be. If I check with MediaInfo, the video stream bit rate, bits/(pixel*frame) value and stream size are smaller. Here is the output of the original file: Video ID : 2 Format : AVC Format/Info : Advanced Video Codec Format profile : High 4:2:2 Intra@L5.1<mailto:Intra@L5.1> Format settings, CABAC : No Format settings, GOP : N=1 Format settings, wrapping mode : Frame Codec ID : 0D01030102106001-0401020201323001 Duration : 4 min 30 s Bit rate : 506 Mb/s Width : 3 840 pixels Height : 2 160 pixels Display aspect ratio : 16:9 Frame rate : 50.000 FPS Standard : Component Color space : YUV Chroma subsampling : 4:2:2 Bit depth : 10 bits Scan type : Progressive Bits/(Pixel*Frame) : 1.219 Stream size : 15.9 GiB (99%) Color range : Limited Color primaries : BT.2020 Transfer characteristics : HLG Matrix coefficients : BT.2020 non-constant And of the remuxed file: Video ID : 2 Format : AVC Format/Info : Advanced Video Codec Format profile : High 4:2:2 Intra@L5.1<mailto:Intra@L5.1> Format settings, CABAC : No Format settings, GOP : N=1 Format settings, wrapping mode : Frame Codec ID : 0D01030102106001-0401020201323001 Duration : 4 min 30 s Bit rate : 500 Mb/s Width : 3 840 pixels Height : 2 160 pixels Display aspect ratio : 16:9 Frame rate : 50.000 FPS Standard : Component Color space : YUV Chroma subsampling : 4:2:2 Bit depth : 10 bits Scan type : Progressive Bits/(Pixel*Frame) : 1.207 Stream size : 15.7 GiB (100%) Color range : Limited Color primaries : BT.2020 Transfer characteristics : HLG Matrix coefficients : BT.2020 non-constant Using current release 3.4.1 and latest nightly (N-89956-gcaa4bd7a9f) does the exact same thing. Any idea what's happening and how I can prevent this loss? Many thanks in advance for your help, Ronan _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".