#2227: ffmpeg incorrectly identifying mjpeg as video stream instead of
attachment
-------------------------------------+-------------------------------------
Reporter: ramitbhalla | Owner:
Type: defect | Status: new
Priority: normal | Component:
Version: unspecified | undetermined
Keywords: wtv | Resolution:
Blocking: | Blocked By:
Analyzed by developer: 0 | Reproduced by developer: 0
-------------------------------------+-------------------------------------
Comment (by cehoyos):
Replying to [comment:45 ramitbhalla]:
> Replying to [comment:43 cehoyos]:
> > Is anything wrong with one of the following two commands?
> > $ ffmpeg -i "Family Guy-S11E14-Call Girl.mp4" -qscale 2 out.avi
> > $ ffmpeg -i "Family Guy-S11E14-Call Girl.mp4" -map 0:2 out.jpg
> > If yes that would (probably) indicate a bug.
>
> Taht's fine, it works and will work since there is ONLY 1 audio stream.
What if there are 2 audio streams and you want to copy both, how will you
do it? you can't use map 0:a since you need to add map 0:v and that will
fail.
The following should work fine:
$ ffmpeg -i input_with_multiple_audio_channels -map 0:0 -map 0:1 -map 0:2
out.avi
Please remember that generally -map 0 cannot work the way you seem to
expect:
The option -map 0 does not mean "copy all streams for which it makes
sense" but "copy all streams".
--
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2227#comment:46>
FFmpeg <http://ffmpeg.org>
FFmpeg issue tracker
_______________________________________________
FFmpeg-trac mailing list
FFmpeg-trac@avcodec.org
http://avcodec.org/mailman/listinfo/ffmpeg-trac
