Distorted sound after converting to mpg

[Colin Law]

On 3 March 2012 16:32, dinkypumpkin <dinkypumpkin at gmail.com> wrote:
> On 03/03/2012 10:04, Colin Law wrote:
>>
>> For the record this appears to be an issue with the version of
>> ffmpeg/avconv currently provided with Ubuntu 12.04 alpha.  A
>> workaround is to use
>> ffmpeg -i file.mp4 -target pal-dvd -acodec ac3_fixed out.mpg
>> It is the acodec that is significant, forcing it to use ac3_fixed
>> rather than just ac3
>
>
> FWIW, I found this same problem in Ubuntu 11.10, which does use an earlier
> version of FFmpeg.  At the time, I just figured something had gone wrong in
> the Libav fork that Ubuntu adopted for FFmpeg.  I didn't investigate
> further, but I noted at the time that the Fedora 15, Fedora 16, and Ubuntu
> PPA versions. all of which derive from the original FFmpeg lineage, worked
> fine.  Even though Ubuntu switched to Libav in 11.04, the code base hadn't
> really diverged for the release they used, so the 11.04 version of FFmpeg
> still worked OK.  Hopefully, something will come of your bug report.

Could I ask you to register yourself as affected by this on the bug
report, a bug confirmed by another will receive higher priority.
https://bugs.launchpad.net/ubuntu/+source/libav/+bug/945482

Thanks

Colin