[FFmpeg-user] WTF? Not getting VC-1 output...

Paul B Mahol onemda at gmail.com
Fri Oct 25 09:01:59 CEST 2013


On 10/24/13, Ronald F. Guilmette <rfg at tristatelogic.com> wrote:
>
>
> I just tried to re-encode an input test file thusly:
>
>   ffmpeg -i input.wmv -acodec vc1 -acodec copy -b:v 1232k output.wmv

vc1 is not audio codec.

>
> I then ran mediainfo on the output.wmv file.  The output produced by
> that includes the following:
>
>    Video
>    ID                                       : 1
>    Format                                   : MPEG-4 Visual
>    Codec ID                                 : MP43
>    Codec ID/Info                            : Microsoft MPEG-4 v3
> (pre-standard)
>    Codec ID/Hint                            : Microsoft
>    Description of the codec                 : msmpeg4
>
> So, um, wtf?  This is neither what I asked for nor what I expected.  I
> asked,
> explictly, for VC-1 video encoding.
>
> If ffmpeg isn't going to do what I asked then:
>
>     a) Why not?
>
>     b) Why didn't it at least have the courtesy to tell me that it had
>        decided to ignore _my_ request for a specific kind of output codec?
>
>
> Regards,
> rfg
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