[FFmpeg-trac] #1720(avformat:open): ffmpeg with -vcodec copy -acodec copy creates files "without audio" for certain players

FFmpeg trac at avcodec.org
Thu Nov 14 21:03:14 CET 2013


#1720: ffmpeg with -vcodec copy -acodec copy creates files "without audio" for
certain players
-------------------------------------+-------------------------------------
             Reporter:  rogerdpack   |                    Owner:
                 Type:  defect       |                   Status:  open
             Priority:  normal       |                Component:  avformat
              Version:  git-master   |               Resolution:
             Keywords:  mpegps       |               Blocked By:
  bounty                             |  Reproduced by developer:  1
             Blocking:               |
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------

Comment (by reimar):

 I believe there is nothing to fix except user (un-)friendliness.
 The extensions .mpg/.mpeg select the "mpeg" muxer, full name "MPEG-1
 Systems / MPEG program stream".
 Nobody really cares about the "MPEG-1 Systems" format, and certainly AC3
 is not generally supported in it (I am not 100% sure it is correct of
 FFmpeg to allow it).
 You need to instead select one of the MPEG-2 PS formats.
 Either by using one of -f vob, -f svcd or -f dvd or using .vob or .dvd as
 extension.
 I suspect the -target thing somehow might cause the muxer to select that
 format as well? Not sure.

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1720#comment:15>
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