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audio syncronizing
Here is the problem if have;
The mic on my camera picks up too much background noise. The camera does not have an external mic jack. So I thought if I could simply record the audio with a seperate recording device using a lapel mic then input it into vegas later and syncronize it to the video this would be the work around.
The problem is how does one syncronize the audio precisely in vegas?
Thanks for any help
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5 Replies
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I use the waveform to get them “close”. I then use the 1 and 3 keys on the numeric keypad to nudge the audio until it’s right while listening to both tracks. If you need more precise than a frame, turn OFF “Quantize to frames” and adjust the audio further. Just remember to turn “Quantize to frames” back on.
Edward Troxel
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What do you, or would you use as this ‘extra’ audio recording device. I have heard alot about many of them not being speed accurate and audio drift. Minidisc? IRiver? And what is your experience with what you use? Thanks for the info.
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I’ve done tests with my camera and with my Fostex MR-8 digital recorder — https://fostex.com/index.php?file=products/digital/mr8 . Here are the results:
With a long video take of 53 minutes, along with two versions of audio (DV tape and Fostex), the end-of-tape sync signals were off by 8 frames–barely more than 1/4 second.
A slight control-drag adjustment and everything lined up. And with normal-length takes, I probably won’t have to do any adjusting at all. This is good news for me because I now have a very accurate wild sound option.
And it’s a cinch to remove the compact flash card from the Fostex and dump the wave file into Vegas (or Sound Forge).
I have no idea about the accuracy of other systems, but I’m very pleased with the Fostex.
James (seatlanta)
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Generally most or all of the digital formats will maintain good sync. As implied above, having reference audio from the camera mic is essential.
You’d probably make a decision based on the audio recording quality of the device and whether it accomodates the type of mic you want to use. My experience with minidisk, hard disk, and compact flash recorders has been great. Frequently, MP3 recorders record at a lower bitrate than you’d like, but I read that many wedding shooters are using an iRiver (don’t know which model).
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I am surprised that the Fostex is that far off. I use a couple of Sony Minidisc recorders and they are dead-on accurate after an hour.
I just tried an iRiver 780 at a stage performance to pick up ambient sounds. Good thing, too, because one of my wireless mics died during the performance. I haven’t sync’ed it up to the video yet but it ran for a few minutes over two hours.
Steve Mann
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