[MEncoder-users] Separating each of the 6 channels of ac3 file into separate wav files

[socke]

L Lee schrieb:
> On 9/24/09 3:45 AM, "socke" <socke-99 at gmx.de> wrote:
>
>   
>> I recently did some ac3 speed change (for conversion between 24000/1001
>> and 25 fps). I used the following pipe to do so:
>>
>> ffmpeg -v 0 -i "$AUDIOFILE" -f sox - \
>> | sox -S -V -p -p speed 1.04270833333333 \
>> | ffmpeg -v 0 -i - -acodec ac3 -ab 448000 -y "$AUDIOFILE2"
>>     
>
> I tried it and it appears to be exactly what I've been looking for. Thanks
> very much. You might want to consider using the "tempo" option rather than
> the "speed" option so that pitch stays the same. In the current version of
> SoX, I can't notice any quality degradation for small changes such as the
> one in your example (my tempo factor is typically smaller than 1.0002).
> Thanks again!
>
> Laine Lee
Glad that it worked out.
I will give the tempo effect a try, thanks for your suggestion.