Edit/Trim AC3 5.1 Files?

[DeathStalker77]

Greetings all!

I have some AC3 (5.1) files that I just need to trim ~1.4 sec from the beginning of. I have tried several different programs so far, and none of them seem to do this (Audacity works, but wants to downmix it to 2-channel). Also tried DelayCut, but that didn't work either. (Also tried AC3 Delay Corrector - didn't work).

Thanks for any assistance!

(You'd think this would be an easy question to answer)

[bat999]

I have some AC3 (5.1) files that I just need to trim ~1.4 sec from the beginning of.

Hi
FFmpeg will do the job.
Like this:-

ffmpeg -i filename.ac3 -ss 1.4 -acodec copy new_filename.ac3

[sambat]

Audacity > Edit > Preferences > Import/Export, choose 'Use Custom...'

[manono]

Also tried DelayCut, but that didn't work either.

Then you didn't do it right. If cutting 1.4 seconds, in the 'Delay' section fill in '-1400' on the 'Start' line. Give it a destination and hit 'Process'.

[SLK001]

AC3 Delay Corrector works fine. Maybe you are using it incorrectly?

[AlanHK]

And DelayCut always works for me.
"Didn't work" isn't very specific. It crashed? Or what?

The interface takes a little study, you have to set the start and end times in milliseconds.

You'd select "Cut file" and
Start = 1400
End = (original length of track in msec, eg, if 10 minutes exactly: 600000).