[FFmpeg-trac] #5749(undetermined:new): File produced ffmpeg by stream copy reports audio (AAC) for the stream that should be video (MPEG2)

[FFmpeg]

#5749: File produced ffmpeg by stream copy reports audio (AAC) for the stream that
should be video (MPEG2)
-------------------------------------+-------------------------------------
             Reporter:  gyhrvy       |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:
  undetermined                       |  unspecified
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Summary of the bug:
 I'm attempting a partial stream copy of the file "Alcorn McBride PAL Test
 Clip (SD)" vid00003.mpg
 Available here: http://alcorn.com/test-files/

 The source file shows these streams, with the AAC one that I'm not
 expecting, and no video stream:
 {{{
 stream,0,mpeg2video,MPEG-2 video,Main,video,1/25
 stream,1,mp2,MP2 (MPEG audio layer 2),unknown,audio,1/44100
 }}}

 Copying the streams with a cut {{{ffmpeg.exe -i vid00003.mpg -ss 00:00:10
 -c:v copy -c:a copy vid00003_cut.mpg}}} gives these streams:
 {{{
 stream,0,mp2,MP2 (MPEG audio layer 2),unknown,audio,1/44100
 stream,1,aac,AAC (Advanced Audio Coding),SSR,audio,1/24000
 }}}

 Copying the streams without the cut {{{ffmpeg.exe -i vid00003.mpg -c:v
 copy -c:a copy vid00003_nocut.mpg}}} works fine.

 How to reproduce:
 {{{
 % ffmpeg.exe -i vid00003.mpg -ss 00:00:10 -c:v copy -c:a copy
 vid00003_cut.mpg

 ffmpeg version is from zeranoe.com, dated 2016-07-28, git fb91143

 ffmpeg version N-81154-gfb91143 Copyright (c) 2000-2016 the FFmpeg
 developers
   built with gcc 5.4.0 (GCC)
   configuration: --disable-static --enable-shared --enable-gpl --enable-
 version3
  --disable-w32threads --enable-dxva2 --enable-libmfx --enable-nvenc
 --enable-avi
 synth --enable-bzlib --enable-libebur128 --enable-fontconfig --enable-
 frei0r --e
 nable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-
 libbs2b
 --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm
 --enable-l
 ibilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb
 --enab
 le-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-
 librtmp --en
 able-libschroedinger --enable-libsnappy --enable-libsoxr --enable-libspeex
 --ena
 ble-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-
 amrwbenc --
 enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp
 --enable-l
 ibx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg
 --ena
 ble-lzma --enable-decklink --enable-zlib
   libavutil      55. 28.100 / 55. 28.100
   libavcodec     57. 51.100 / 57. 51.100
   libavformat    57. 44.100 / 57. 44.100
   libavdevice    57.  0.102 / 57.  0.102
   libavfilter     6. 49.100 /  6. 49.100
   libswscale      4.  1.100 /  4.  1.100
   libswresample   2.  1.100 /  2.  1.100
   libpostproc    54.  0.100 / 54.  0.100



 }}}
 Patches should be submitted to the ffmpeg-devel mailing list and not this
 bug tracker.

--
Ticket URL: <https://trac.ffmpeg.org/ticket/5749>
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