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Sound sync problem with 24P footage? [ANSWER]

Posted: Wed, 19th Jul 2006, 3:08am

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Lior

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In the old version of Effects Lab when I made a movie the sound and video were perfectly synced. Now when I edit my videos with Effects Lab renders the video and sound; but their way out of sync; In fact when I put it into Sony Vegas, the sound is way ahead of the video. Can somebody tell me what I am doing wrong? All help will be greatly appreciated. Thankx
Posted: Wed, 19th Jul 2006, 4:38am

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Axeman

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Odd. What codec are you using?
Posted: Wed, 19th Jul 2006, 8:29am

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Cogz

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Is this with an existing project, or have you started a new project, and now they don't sync? In which case, I'd say you've got the wrong project settings, perhaps chosen the wrong fps.
Posted: Wed, 19th Jul 2006, 6:36pm

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Lior

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It's a new project that is recorded on 24p. I am sure i got the settings right because it worked before. I am not sure what happned. I even tryed reinstalling it and nothing.
Posted: Thu, 20th Jul 2006, 8:17am

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Cogz

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Hmm, what codec are you using to export from EffectsLab?
Posted: Thu, 20th Jul 2006, 4:01pm

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Lior

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Well i first got my original clip shot on 24p and then put it into effects lab pro. elab recorgnized that the file was at 24fps. The problem is the sound was out of synce after i rendered it. If i change the fpsto 29.97 everything happends to work perfectly. It will not however render at 24p perfectly. The codec i used is uncomressed directshow. I used many other codecs aswell.I remeber doing that same thing on the old elab but it won't work here. Please let me know if i am doing something wrong. Thanks again.
Posted: Tue, 25th Jul 2006, 8:30am

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Cogz

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Could you send us your project file so we could check it over. And maybe a small clip of your footage so we can test it out. It would be most appreciated, the address is support@fxhome.com

Thanks
Posted: Tue, 25th Jul 2006, 8:55am

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Joshua Davies

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24P footage is generally pulled down inside the camera and saved as 29.97fps so it can be played back on NTSC screens - this is because TVs don't support 24fps and (in the case of NTSC) can only play back at 29.97fps. The same is true of DVDs/Videos of feature films.

This interlaces some of the frames to create the 29.97fps framerate ( http://en.wikipedia.org/wiki/Telecine ). EffectsLab should recognise your footage as 29.97fps split-field footage (its not progressive) and also export as 29.97fps. If you then import this in to your editing program it should work just fine.
Posted: Tue, 25th Jul 2006, 8:52pm

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Lior

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o i understand that but i wanted to edit in 24pa mode and it worked before. On the old version i edited in 24p mode fine. When i upgraded i noticed it wouldint alow that. ur right it worked fine on 29 but if i will want to make it 24p again from that wont it mess it up? I know it does because i have seen the df messup alot of times once i go from 60i to 24p or 29 to 24 it sacrafices alot. Also the reason i need 24p is because i want to transfer my work into film. Yes expensive i know but in order to go to sundance i need to ither have it hd uprez or transfered to film. Film is more expensive obviously but thats what im going for.