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Burned DVD audio and video out of sync

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Ted Scarlett
Burned DVD audio and video out of sync
on Dec 5, 2011 at 3:43:29 pm

Exporting from FCP using QT movie (not self contained) 1280x720, 48Khz. Compressing files using 90 min best quality. Everything is set to 4.3 in DVD Studio pro. Everything is in sync in my workflow inside DVD Studio pro. Once the DVD is burned the video and audio are slightly off by a second or two. Is there a reason this is happening? I've covered this forum for an answer and I never could find anything concrete. I did find one answer saying that the solution was to set your audio and video off before your burn inside DVD Studio Pro? Any help would be appreciated.


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Joseph Hung
Re: Burned DVD audio and video out of sync
on Dec 5, 2011 at 4:22:36 pm

Not sure if this would make a difference, but have you tried exporting a QT self contained instead? This way, there is no question for Compressor for video and audio start?

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Ted Scarlett
Re: Burned DVD audio and video out of sync
on Dec 5, 2011 at 4:35:50 pm

Yeah I tried that and wasn't able to export the movie as it was too large. Do you think changing the timecode in DVD Studiopro might do something. I was thinking of changing the timecode to asset instead of zero. Not sure if that would help or not. I'm going to try it.


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Joseph Hung
Re: Burned DVD audio and video out of sync
on Dec 5, 2011 at 4:56:31 pm

Try it and report back, but I'm skeptical that will help.
And I'm not sure why exporting a QT self contained would be "too large." What exactly is happening? What are your specs and settings? More info will be useful.

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Ted Scarlett
Re: Burned DVD audio and video out of sync
on Dec 5, 2011 at 5:09:04 pm

Yeah it didn't work doing that. It seems my video is about a second or two ahead of my audio when it's burned to a DVD. I made the QT movie self contained. So now that I have that do I need to run it thru compressor again at 90 min best quality? Do I follow the same steps as were followed in compressor when movie was not self contained?


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Joseph Hung
Re: Burned DVD audio and video out of sync
on Dec 5, 2011 at 5:12:13 pm

Yes. Maybe something was amiss from before while Compressor had to full the media. If it's self contained, it might get it to work right. I could be wrong. Report back.

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Ted Scarlett
Re: Burned DVD audio and video out of sync
on Dec 5, 2011 at 6:08:58 pm

I'm trying it with the movie self contained. Do you think that this problem could be caused by not having a compression marker on a cross dissolve? Someone had emailed that response to me. I didn't think that would have an affect on the audio and video sync?


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Joseph Hung
Re: Burned DVD audio and video out of sync
on Dec 5, 2011 at 9:54:09 pm

Huh, maybe, but I doubt it. I always output with compression markers if I know I'm going to DVD or BluRay. But that shouldn't mess up your sync.

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Harry Bromley-Davenport
Re: Burned DVD audio and video out of sync
on Dec 5, 2011 at 11:00:01 pm

I've had this issue with DVD Studio Pro for years. Before I run anything through Compressor I always remove 4 frames of audio from the top of the soundtrack and that drops the end result back in sync.

Unfortunately it seems to me that in DVD ST Pro one can advance the sound in the view window thingy, but not the picture.

So minus 4 frames sound works for me. You are talking about "a second or two" - but maybe you don't mean that to be taken literally.

I have never received a proper explanation for this except that once someone told me that this occurs only when progressive picture is being used.

If anyone knows why, please post.

Best

Harry



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Ted Scarlett
Re: Burned DVD audio and video out of sync
on Dec 6, 2011 at 3:40:23 am

OMG thanks Harry for posting. At least now I know I'm not going crazy. I've been working on this all day long and it still is doing the same thing. Can you explain a little further how you remove key frames from your audio? I wouldn't know where to start to do that. Thanks again for your responses guys. I really appreciate your help

Tedd


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Harry Bromley-Davenport
Re: Burned DVD audio and video out of sync
on Dec 6, 2011 at 4:25:26 am

Make a Quicktime Export of your film. Use the SELF CONTAINED setting.

When this has cooked, drag it back into your Timeline and unlink the picture and sound by highlighting first and then unlinking sound and picture with COMMAND L. Now remove 4 frames or however many you want to remove from the front of the sound.

Now export the thing again Self Contained and you are done and your file is ready to be shoved into Compressor.

Best

Harry.



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Joseph Hung
Re: Burned DVD audio and video out of sync
on Dec 6, 2011 at 5:15:43 pm

That's great, I hope Harry's suggestion fixes it. The weird thing is, of all the years I've been using DVDSP, I have NEVER had this problem. And I always check my DVDs from beginning to end, and no out of sync audio or slipping of sync, etc.

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Joseph Hung
Re: Burned DVD audio and video out of sync
on Dec 6, 2011 at 5:30:06 pm

To follow up on my last post, on the DVD, is the audio out of sync right off the bat or is it in sync then later in the program it's slipping out of sync?
ARe you checking that the audio settings, in 90 min. best quality in Compressor, is set to the same as your sequence settings, ie. output from FCP?

http://www.tulpapictures.com
Twitter: @tulpapictures
Facebook: http://www.facebook.com/tulpapictures

Mac 2.66 GHz Quad Intel Xeon
OSX 10.6.8
FCS2
CS5
8GB RAM
ProAvio 8TB RAID 5 Dual Mini-SAS
Blackmagic Intensity Pro
ATI Radeon X1900
RocketRAID 4322 via dual MiniSAS
Panasonic Lumix GH2, Canon 5DMKII, 7D, Panasonic HVX200A, Panasonic DVX100A


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