#8173: MKV - All streams marked as default when trying to remove all dispositions -------------------------------------+------------------------------------- Reporter: nheelyolis | Type: defect Status: new | Priority: normal Component: ffmpeg | Version: git- Keywords: | master mkv,disposition | Blocked By: Blocking: | Reproduced by developer: 0 Analyzed by developer: 0 | -------------------------------------+------------------------------------- == Summary of the bug == When trying to demux or encode an MKV file to another MKV file, all streams get marked as "default" when I'm trying to delete all dispositions in that file with {{{-disposition[:stream_specifier] 0}}}. You can't see it during the process itself, but if you do a {{{ffprobe}}} on the resulted file, you'll see that all its streams are marked as default.
Even if it's expected behavior (which doesn't look so to me), why doesn't it say that the output streams will be default during encoding/demuxing? == How to reproduce == 1. Take any MKV file which has at least 1 stream marked as default. 2. Demux this file deleting all its dispositions. {{{ % ffmpeg -i in.mkv -map 0 -disposition:v:0 0 -c copy out.mkv ffmpeg version N-94959-g96f1d34d0c Copyright (c) 2000-2019 the FFmpeg developers built with gcc 9.1.0 (GCC) configuration: libavutil 56. 35.100 / 56. 35.100 libavcodec 58. 57.100 / 58. 57.100 libavformat 58. 32.104 / 58. 32.104 libavdevice 58. 9.100 / 58. 9.100 libavfilter 7. 58.102 / 7. 58.102 libswscale 5. 6.100 / 5. 6.100 libswresample 3. 6.100 / 3. 6.100 Input #0, matroska,webm, from 'in.mkv': Metadata: ENCODER : Lavf58.29.100 Duration: 00:14:48.06, start: -0.007000, bitrate: 3437 kb/s Stream #0:0(eng): Video: vp8, yuv420p(progressive), 1920x818, SAR 1:1 DAR 960:409, 24 fps, 24 tbr, 1k tbn, 1k tbc (default) Metadata: DURATION : 00:14:48.055000000 Stream #0:1(eng): Audio: opus, 48000 Hz, stereo, fltp Metadata: DURATION : 00:14:48.061000000 Stream #0:2(eng): Subtitle: webvtt Metadata: DURATION : 00:10:29.807000000 Output #0, matroska, to 'out.mkv': Metadata: encoder : Lavf58.32.104 Stream #0:0(eng): Video: vp8 (VP80 / 0x30385056), yuv420p(progressive), 1920x818 [SAR 1:1 DAR 960:409], q=2-31, 24 fps, 24 tbr, 1k tbn, 1k tbc Metadata: DURATION : 00:14:48.055000000 Stream #0:1(eng): Audio: opus ([255][255][255][255] / 0xFFFFFFFF), 48000 Hz, stereo, fltp Metadata: DURATION : 00:14:48.061000000 Stream #0:2(eng): Subtitle: webvtt Metadata: DURATION : 00:10:29.807000000 Stream mapping: Stream #0:0 -> #0:0 (copy) Stream #0:1 -> #0:1 (copy) Stream #0:2 -> #0:2 (copy) Press [q] to stop, [?] for help frame=22308 fps=13499 q=-1.0 Lsize= 372673kB time=00:14:48.04 bitrate=3437.8kbits/s speed= 537x video:358428kB audio:13768kB subtitle:1kB other streams:0kB global headers:0kB muxing overhead: 0.127906% }}} 3. Probe the resulted file and notice that all the streams are "default". {{{ % ffprobe out.mkv ffprobe version N-94959-g96f1d34d0c Copyright (c) 2007-2019 the FFmpeg developers built with gcc 9.1.0 (GCC) configuration: libavutil 56. 35.100 / 56. 35.100 libavcodec 58. 57.100 / 58. 57.100 libavformat 58. 32.104 / 58. 32.104 libavdevice 58. 9.100 / 58. 9.100 libavfilter 7. 58.102 / 7. 58.102 libswscale 5. 6.100 / 5. 6.100 libswresample 3. 6.100 / 3. 6.100 Input #0, matroska,webm, from 'out.mkv': Metadata: ENCODER : Lavf58.32.104 Duration: 00:14:48.06, start: -0.007000, bitrate: 3437 kb/s Stream #0:0(eng): Video: vp8, yuv420p(progressive), 1920x818, SAR 1:1 DAR 960:409, 24 fps, 24 tbr, 1k tbn, 1k tbc (default) Metadata: DURATION : 00:14:48.062000000 Stream #0:1(eng): Audio: opus, 48000 Hz, stereo, fltp (default) Metadata: DURATION : 00:14:48.061000000 Stream #0:2(eng): Subtitle: webvtt (default) Metadata: DURATION : 00:10:29.814000000 }}} -- Ticket URL: <https://trac.ffmpeg.org/ticket/8173> FFmpeg <https://ffmpeg.org> FFmpeg issue tracker _______________________________________________ FFmpeg-trac mailing list FFmpeg-trac@avcodec.org https://ffmpeg.org/mailman/listinfo/ffmpeg-trac To unsubscribe, visit link above, or email ffmpeg-trac-requ...@ffmpeg.org with subject "unsubscribe".