Audio lag?

Stuntmusic wrote on 9/9/2009, 9:27 AM
I have a project on my desk where a client has provided me with 3 DVD's and wants them compiled to one, complete with menus, etc.

I ripped all the DVD's using Vegas and then reassembled them in DVDA (4.5)

When I view the preview in DVDA, all looks well. I've produced a master and gave it to the client to approve.

According to them, some of the audio seems to 'lag' behind the video, voices not lining up with the person speaking, etc.

They are viewing this on a MAC, but that is all I know about the hardware they are using.

I've viewed this on a couple of players as well as laptops and the audio does seem to be a millisecond or two behindat some points.

Does anyone have any idea what might be happening?

DVDA settings are such that the files are not enough to fill the disk, so optimizing isn't an issue. I've tried PCM and AC3 audio in DVDA as well.

Do I need to re-rip the MPG files extracted from the DVD's to AVI then let DVDA recompress them? I am really at a loss here.

Comments

Stuntmusic wrote on 9/11/2009, 7:51 AM
Anyone?
musicvid10 wrote on 9/11/2009, 12:38 PM
DVDs are synchronized for the majority of playback devices in use. There is no "gold standard" and there can be wide variations between discs and individual playback setups.

Also, the process of ripping and combining DVDs can introduce sync issues depending on how the original DVDs were compiled. That is a topic for another discussion. VideoReDo or DVDShrink may do a better job of maintaining sync over long programs than Import Camcorder Disc in Vegas.

Check your finished DVD on a variety of players. If there is a sync problem across machines, then fix it in Vegas by ungrouping the audio from the video, regrouping the audio events, and sliding them a frame or two until the sync is acceptable.

--OR--

If the playback is to be on one machine only (the Mac you mentioned), adjust as above for that machine only.

Stuntmusic wrote on 9/14/2009, 10:23 AM
How do you separate the audio from the video in Vegas? I've never had to do it, so I am at a loss.
musicvid10 wrote on 9/14/2009, 12:18 PM
Open Vegas Help.
Click Index
Type in "Ungroup"