[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
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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 |
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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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