After Render DVD plays out of sync

Arco wrote on 1/4/2005, 1:24 PM
Render DV-AVI to MPEG-2 720x480x32
Created DVD using NERO Vision Express

Mpg-2 file is in sync when viewing in Vegas or the Nero preview app however Windows Media player is out of sync and both my DVD machines have varying degrees of sync problems from slight to very bad (near a second).

Vegas Project: NTSC DV (720x480, 29.970 fps)/Audio Stereo, 48kHz,16 bits

Project is made up of numerous clips with audio in both 32kHz and 48kHz. The worst spot, with regards to sync, is a spot where there 40 short video clips with one long 48kHz audio clip--in perfect sync on the timeline and way off on the DVD. It starts late and stays late throughout the piece. The next piece is then more tight.




any suggestions? thanks.

Comments

B.Verlik wrote on 1/4/2005, 1:38 PM
This is only a suggestion, don't know for sure. Try to make all your sound files 48KHz before render. Wait and see if somebody more knowledgeable trounces my suggestion.
Former user wrote on 1/4/2005, 1:40 PM
What bitrate did you encode the MPEG file?

Dave T2
gordyboy wrote on 1/4/2005, 3:27 PM
I had this problem too - the problem seems to get worse the more edits there are.

However, on an old thread I found a solution that worked for me. First render all the active tracks in the project to a new track (ie "render as new track".)

Then render your DVD Architect file from the "bounce down" track only.

Worked for me - hope it does for you because it was really really frustrating.

Cheers

gordyboy
Arco wrote on 1/6/2005, 6:39 AM
>>First render all the active tracks in the project to a new track (ie "render as new track".)<<

Do you mean audio AND video or just the video?

I went ahead and rendered the whole 55 minute project as AVI files. Some of the text looks a little funky--credit crawl specifically.
Arco wrote on 1/6/2005, 6:41 AM
Video Quality: Best (31)
Variable bit rate: Max--6,000,000
Average-- 4,000,000
Minimum-- 192,000

Two-pass: unchecked

thanks.
gordyboy wrote on 1/6/2005, 7:33 AM
Yes - I rendered using an AVI template and that automatically rendered the audio along with the video. I'll check this evening to see what format I used but I'm sure you would have picked something similar or better.

Aside from the problem with quality of the credits text, have you had a chance to burn a DVD from the new rendered file to see if the synch problem is any better?

Hopefully someone else can advise on a workround for the text quality issue - I did't have that problem on my bouncedown.

Cheers

gb
B.Verlik wrote on 1/6/2005, 9:28 PM
Arco, From what I see, you are using the 'default' template for mpg2. That, for some reason??, is lousy quality. Use the DVD (either NTSC america or PAL europe) template. That's much better quality. (8,000,000 - 6,000,000 - 192,000 bps)
It may be that you only need to re-render all the audio tracks to 1 new audio track (wav-48,000 Hz). That will re-render fast, but you won't know if it'll stay in sync until you watch it (mute the old audio tracks), or maybe from a DVD-RW. If not, then you can try rendering a new .avi first before mpg encoding. (the .avi, should lock the video and audio together, but may slightly degrade certain aspects of the video.)