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audio sync problem – it can’t be this hard
I’m trying to figure out what I’m missing. I’m capturing a two camera interview shot on miniDV. I capture the whole tapes in PPro 1.5. I put them on the timeline and they drift out of sync. The project settings are 48k and the tapes were captured as standard DV in. They are in sync when I view them outside of PPro (Vegas).
I’ve searched FAQs and can’t find an answer. This should be such a no-brainer, it’s driving me completely crazy. Thanks!
Brett Nelson
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13 Replies
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Do you mean the shots are out of sync with each other, or that the audio in one/both of the shots goes out of sync with the video?
TimK,
Kolb Productions,
Creative Cow Host,
Author/Trainer
http://www.focalpress.com
http://www.classondemand.net -
Sorry to be unclear. The audio goes out of sync with its own video. It starts in sync at the head and ends up several seconds out of sync by the end of the hour. I’m not worried about matching the shots as long as each camera is holding sync.
Thanks!
Brett
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What camcorder is the audio from?
Was the audio in “locked” mode?
TimK,
Kolb Productions,
Creative Cow Host,
Author/Trainer
http://www.focalpress.com
http://www.classondemand.net -
I shot on a Canon XL1 and captured from a Sony DSR30.
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Are you using a hardware accelerator such as the Matrox RTX10 or 100?
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No. Does this sound like it could be fragmentation? I am running with a 300GB drive…actually 2 ATA IDE 7200 drives that are striped. There is only 20% free space. I am doing a defragment now, but of course it’s very slow with such a big drive.
I’m running this on a dual 2.4gHz Supermicro with 1GB of RAM…PPro 1.5, WinXP Pro SP2.
Brett
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Well, defrag isn’t it, or at least isn’t all of it. I did a defrag and have the same problem with no change. I’ve tried the same clip running on an external Firewire drive, tried creating a 48k and 44.1k AIF and using those instead, and I tried importing the clip into a 44.1 project…all with no luck.
Brett
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Have you deleted the conformed audio files? If not, I would try that to see if Prem rewrites them with better results.
Good Luck.
db
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Thanks, but still no. It’s strange because I have about 14 hours of footage in another project all captured as hour-long clips and they play fine. I tried importing one of out-of-sync clips into that project and dropping it into one of those sequences. That didn’t do it.
Brett
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Dropping video frames during capture can cause the audio to drop behind the video. Try recapturing and note at the top of the capture window if any frames where dropped.
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