Recode AC3 5.1 (without doing downmix) with FFMPEG: what's the way to go?

[danpos]

The title speaks for itself.

Any suggestion will be highly appreciated.

Thanks in advance,

[danpos]

@ALL

OK, some forum search took me to:

http://forum.doom9.org/archive/index.php/t-73899.html

Now, I've just more one question: if I did a video framerate conversion (PAL -> NTSC or vice-versa), I should to change audio duration in order to match the video one. So, I do ask: ffmpeg has a built-in option which does the time stretch or I've to do out of it?

TIA,

[tebasuna51]

AFAIK, ffmpeg can't do time-stretch.

If you want make the process without intermediate wav file, you can use BeHappy. You need AviSynth 2.56, .NET FrameWork 2.0 and this package: http://forum.doom9.org/showthread.php?p=829754#post829754

[danpos]

@tebasuna

Thank you so much for your input. :) I will take an eye on this thread right now.

Cheers,

[BigDid]

Hi,

I have good results with behappy.
I use it to normalize and lower bitrate for ac3 5.1 soundtracks.
I have also seen a time stretch option...

Shon3i just updated a package here: http://forum.doom9.org/showthread.php?p=843035#post843035

Did

[danpos]

@BigDid

Thanks, mate!! :)

The users of this forum really rocks! ;)

Cheers,

[BigDid]

You are welcome :)

Did