[FFmpeg-trac] #2876(avformat:new): Stream mapping: unable to set Video like first stream in output file (mpeg)
FFmpeg
trac at avcodec.org
Fri Aug 16 16:47:50 CEST 2013
#2876: Stream mapping: unable to set Video like first stream in output file (mpeg)
-------------------------------------+-------------------------------------
Reporter: kadmandux | Type: defect
Status: new | Priority: normal
Component: avformat | Version: git-
Keywords: stream | master
mapping | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Summary of the bug:
I'm having problems with stream ordering in mpeg files, as you can see
here:
http://trac.ffmpeg.org/ticket/2875
I've found some problems to recover the original stream order, because
ffmpeg don't generates the stream order I'm asking for.
These are the two original files. Look at stream order:
{{{
% ffprobe v1.mpg
Input #0, mpeg, from 'v1.mpg':
Duration: 00:00:40.14, start: 0.500000, bitrate: 7713 kb/s
Stream #0:0[0x1e0]: Video: mpeg2video (Main), yuv420p, 720x576 [SAR
64:45 DAR 16:9], max. 9100 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc
Stream #0:1[0x80]: Audio: ac3, 48000 Hz, stereo, fltp, 256 kb/s
% ffprobe v2.mpg
Input #0, mpeg, from 'v2.mpg':
Duration: 00:02:09.82, start: 0.500000, bitrate: 7583 kb/s
Stream #0:0[0x80]: Audio: ac3, 48000 Hz, stereo, fltp, 256 kb/s
Stream #0:1[0x1e0]: Video: mpeg2video (Main), yuv420p, 720x576 [SAR
64:45 DAR 16:9], max. 9100 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc
}}}
I'm going to try to reverse the order of the streams in both files.
How to reproduce:
{{{
% ffmpeg -i v1.mpg -c:a copy -c:v copy -nostats -map 0:1 -map 0:0 v11.mpg
ffmpeg version N-55393-g3b2e99f Copyright (c) 2000-2013 the FFmpeg
developers
built on Aug 8 2013 21:32:57 with gcc 4.7.3 (GCC)
configuration: --enable-gpl --enable-version3 --disable-w32threads
--enable-av
isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls
--enab
le-iconv --enable-libass --enable-libbluray --enable-libcaca --enable-
libfreetyp
e --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame
--ena
ble-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg
--enable-l
ibopus --enable-librtmp --enable-libschroedinger --enable-libsoxr
--enable-libsp
eex --enable-libtheora --enable-libtwolame --enable-libvo-aacenc --enable-
libvo-
amrwbenc --enable-libvorbis --enable-libvpx --enable-libx264 --enable-
libxavs --
enable-libxvid --enable-zlib
libavutil 52. 41.100 / 52. 41.100
libavcodec 55. 24.100 / 55. 24.100
libavformat 55. 13.102 / 55. 13.102
libavdevice 55. 3.100 / 55. 3.100
libavfilter 3. 82.100 / 3. 82.100
libswscale 2. 4.100 / 2. 4.100
libswresample 0. 17.103 / 0. 17.103
libpostproc 52. 3.100 / 52. 3.100
Input #0, mpeg, from 'v1.mpg':
Duration: 00:00:40.14, start: 0.500000, bitrate: 7713 kb/s
Stream #0:0[0x1e0]: Video: mpeg2video (Main), yuv420p, 720x576 [SAR
64:45 DAR 16:9], max. 9100 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc
Stream #0:1[0x80]: Audio: ac3, 48000 Hz, stereo, fltp, 256 kb/s
Output #0, mpeg, to 'v11.mpg':
Metadata:
encoder : Lavf55.13.102
Stream #0:0: Audio: ac3, 48000 Hz, stereo, 256 kb/s
Stream #0:1: Video: mpeg2video, yuv420p, 720x576 [SAR 64:45 DAR 16:9],
q=2-31, max. 9100 kb/s, 25 fps, 90k tbn, 25 tbc
Stream mapping:
Stream #0:1 -> #0:0 (copy)
Stream #0:0 -> #0:1 (copy)
Press [q] to stop, [?] for help
frame= 999 fps=533 q=-1.0 Lsize= 37800kB time=00:00:40.16
bitrate=7710.6kbits/s
video:36393kB audio:1255kB subtitle:0 global headers:0kB muxing overhead
0.403831%
% ffmpeg -i v2.mpg -c:a copy -c:v copy -nostats -map 0:1 -map 0:0 v22.mpg
ffmpeg version N-55393-g3b2e99f Copyright (c) 2000-2013 the FFmpeg
developers
built on Aug 8 2013 21:32:57 with gcc 4.7.3 (GCC)
configuration: --enable-gpl --enable-version3 --disable-w32threads
--enable-av
isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls
--enab
le-iconv --enable-libass --enable-libbluray --enable-libcaca --enable-
libfreetyp
e --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame
--ena
ble-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg
--enable-l
ibopus --enable-librtmp --enable-libschroedinger --enable-libsoxr
--enable-libsp
eex --enable-libtheora --enable-libtwolame --enable-libvo-aacenc --enable-
libvo-
amrwbenc --enable-libvorbis --enable-libvpx --enable-libx264 --enable-
libxavs --
enable-libxvid --enable-zlib
libavutil 52. 41.100 / 52. 41.100
libavcodec 55. 24.100 / 55. 24.100
libavformat 55. 13.102 / 55. 13.102
libavdevice 55. 3.100 / 55. 3.100
libavfilter 3. 82.100 / 3. 82.100
libswscale 2. 4.100 / 2. 4.100
libswresample 0. 17.103 / 0. 17.103
libpostproc 52. 3.100 / 52. 3.100
Input #0, mpeg, from 'v2.mpg':
Duration: 00:02:09.82, start: 0.500000, bitrate: 7583 kb/s
Stream #0:0[0x80]: Audio: ac3, 48000 Hz, stereo, fltp, 256 kb/s
Stream #0:1[0x1e0]: Video: mpeg2video (Main), yuv420p, 720x576 [SAR
64:45 DAR 16:9], max. 9100 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc
Output #0, mpeg, to 'v22.mpg':
Metadata:
encoder : Lavf55.13.102
Stream #0:0: Video: mpeg2video, yuv420p, 720x576 [SAR 64:45 DAR 16:9],
q=2-31, max. 9100 kb/s, 25 fps, 90k tbn, 25 tbc
Stream #0:1: Audio: ac3, 48000 Hz, stereo, 256 kb/s
Stream mapping:
Stream #0:1 -> #0:0 (copy)
Stream #0:0 -> #0:1 (copy)
Press [q] to stop, [?] for help
frame= 3240 fps=324 q=-1.0 Lsize= 120176kB time=00:02:09.85
bitrate=7581.3kbits/s
video:115639kB audio:4058kB subtitle:0 global headers:0kB muxing overhead
0.399988%
}}}
The results are different than expected: v11.mpg has changed the stream
order of v1.mpg, but v22.mpg has the same stream order than v2.mpg:
{{{
% ffprobe v11.mpg
Input #0, mpeg, from 'v11.mpg':
Duration: 00:00:40.14, start: 0.500000, bitrate: 7713 kb/s
Stream #0:0[0x80]: Audio: ac3, 48000 Hz, stereo, fltp, 256 kb/s
Stream #0:1[0x1e0]: Video: mpeg2video (Main), yuv420p, 720x576 [SAR
64:45 DAR 16:9], max. 9100 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc
% ffprobe v22.mpg
Input #0, mpeg, from 'v22.mpg':
Duration: 00:02:09.82, start: 0.500000, bitrate: 7583 kb/s
Stream #0:0[0x80]: Audio: ac3, 48000 Hz, stereo, fltp, 256 kb/s
Stream #0:1[0x1e0]: Video: mpeg2video (Main), yuv420p, 720x576 [SAR
64:45 DAR 16:9], max. 9100 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc
}}}
--
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2876>
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