In article ,
Leonid Makarovsky wrote:
Hassan Davis wrote:
: You specified that the audio is ahead by 1 second. So, are you sure you
: need to stretch the audio? Do you mean that the audio starts off
: in-sync but that by the end of the playout the audio is ahead by a
: second? Otherwise all you need to do is re-align the audio with the
: video.

I *assume* that the audio starts in-sync. Honestly, there's no way I can check
that. I can, however, check the audio relative to video position at the end of
the whole thing by re-capturing just the very end of the program, then finding
the same video frame and from that point of time copying audio.

If you can't check it, then I assume there is nothing up front that _needs_
to be synched. If that's the case, just shift everything five frames and
let the beginning be out of synch. If there is no dialogue and no synched
effects, it doesn't matter if you're a couple frames off.

If there is dialogue and synched effects up front, then you certainly can tell
if it starts in synch.
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."

Scott Dorsey wrote:
: If you can't check it, then I assume there is nothing up front that _needs_
: to be synched.

I'm not sure about that. All I know for sure that audio vs video in the
beginning differs from audio vs video at the end. But I can't check precisely.
It looks and sounds ok to me. But the beginning is as important as the end.

By the way, I don't worry about the pitch even if I had adjust it more than
even 10 seconds 'cause theoretically if soundcard's internal clock is really
off, I will get correct pitch by stretching or squeezing the file.

--Leonid