audio delay automatic correction?

[fjhdavid]

Dear all,

I use dvd-RB pro version and wanted to know if there is a specificic setting in order to correct an audio delay during the re-encoding process?

thanks
Francois

[blutach]

DVDRB will mux the audio correctly. If your source is bad, you will need to correct it beforehand - try demuxing and remuxing with muxman using the correct audio delay.

Regards

[fjhdavid]

In fact, I would like to extract the audio stream from the .d2v file and apply an AudioDelay on it.

But I am not able to find a file with an .wav or .ac3 extension. I have just a file with a .d2v extension (generated by dvd-rb).

Do you know an avisynth command (or script) in order to extract the audio part from the .d2v file?

thanks
Francois

[jdobbs]

DVD-RB doesn't extract the audio until the REBUILD phase, and at that point it extracts and multiplexes (into the new stream) all in one step.

[fjhdavid]

so no way to work on the audio part only, with avisynth script? (like audio normalisation or audiodelay correction)?
even with additionnal commands in the Rebuilder.inf file?

[jdobbs]

Not currently, because DVD-RB would ignore them and pull the original audio during REBUILD. But I am working on ways to integrate external audio into the stream -- mainly as a path toward doing true authoring with the same engine. That's going to be a while, though.

[wmansir]

It might be possible to leave the audio alone and sync the video by adding/removing frames to account for the offset.

[fjhdavid]

yes, in fact in the first time we don't need a re-encoding of the audio track (the only way to get a zero delay), but we need only a "frame accurate delay" of +/-40ms for PAL movie.

for the moment I use rejig from Nic which done the whole in a one click mode, but...you have to wait 30mn for a film...(but the film is on the hard drive then...)

but it would be sufficient to add a "correct audio delay button" and use the AC delay coorector routines from Nic during the rebuild phase?