Sync problem at post with Red Weapon and 688

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Hi Guys,

I just finished my project last week. I found after i sync everything together, video and audio got slightly offset.  Camera was Red Weapon 8K, my recorder was sound devices 688. I jammed the tentacle from 688 everyday before we shoot and used tentacle to jam Red and i left tentacle attached with RED weapon. we shot on 24 fps.

At post, i found at beginning of the day, audio and video had 1 or 2 frame offset, and the end of the day, audio and video got around 12 frames offset. we normally shot 12 hours a day, and i didn’t jam tentacle in the middle of the shooting, just let it run for the whole day.

is anyone got a idea here or know what it wrong here? why i have the offset?

Thanks Guys

4 Answers

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I set the red genlock to be external. after I attached my tentacle to the red, the tc indicator on the monitor turned green.

however, my 688 and red got did not Keep running for the whole day, we powered off the red and 688 couple of times.
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