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samthomasmedia
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Audio/Video Sync Drift Issue

Feb 25, 2013 11:41 AM

Tags: #problem #issue #video #audio #synchronize #sync #question #drift #audio-sync

I recently recorded a stage show using a canon T2i and a canon 60D. I am syncing these H.264 video files from these cameras with a master audio track recorded by my sound recordist at 48,000Hz, to match the audio sample rate of the DSLRs. Upon syncing the start of each video clip, everything is fine, but gradually over a few minutes, the video and audio drift out of sync quite severely. I set the project up in Premiere Pro CS6 to match the settings of the video files - this should be correct for the 48Khz audio file also right? Here is an image of my sequence settings for reference:

Screen Shot 2013-02-25 at 19.37.04.png

I've tried messing with the speed of the audio file, adjusting everywhere from about 99.5% to 100.5%, in 0.01% increments and even that doesn't seem to help consistently.

 

I'm really stuck now. Any help anybody could give will be greatly apriciated!

 
Replies
  • Currently Being Moderated
    Feb 25, 2013 7:38 PM   in reply to samthomasmedia

    Unfortunately, audio devices don't seem to record at a standard speed as cameras do.  The only solution I've found is to adjust the speed as necessary, even cutting the clip if need be.

     
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  • Currently Being Moderated
    Feb 26, 2013 7:40 AM   in reply to samthomasmedia

    Mine camera and Zoom were off by 100.4%  Once you find that number, it gets easier.

     
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