Re: [Avid-L2] Question about Autosync and double system sound... FEATURE REQUEST

Awesome explanation. Thanks, Job. I didn't start this as a film project, but it's good to know that the slip can be of any amount.

Avid should enable this on VIDEO projects because, oddly, though the audio was captured into a high end mixer/recorder (a 788) there is one mic that is off by about 1/3 of a frame from the others. On clappers, you can see that the timecode of all three mics is the same, but if you zoom WAY in, INSIDE the frame, one mic is behind the other two, though the clap is inside the same frame... all three mics were within four feet of each other. So, if I leave all three mics up in the mix, there's a weird "phasing" sound. Pull the one mic out and all sounds great.

Steve Hullfish
contributor: www.provideocoalition.com
author: "The Art and Technique of Digital Color Correction"

On Apr 23, 2012, at 3:21 PM, Job ter Burg (L2B) wrote:

>
> Hi Steve,
>
> Changing the sync on synced clips is only available on projects that have film options enabled and 35mm as the film type. You can make this setting active on any project, by they way, even video projects, but you need to do this before bringing in the sound (as it flags the sound as being 4-perf 35mm).
>
> The feature is called Perf Slip, and the way it works is that you map Perf Slip left/right to buttons or keys of your liking, then load the synced clip into the SOURCE monitor, then hit Perf Slip left or right until you're satisfied. This works in quarter frame steps, but you can go as far as the footage is long. So if you slip by 12 perfs, you are slipping by three frames.
>
> Thing is: you do this per clip, not per batch.
>
> The way most folks use it is: sync by timecode (which is rarely dead on), then correct sync based on sticks (always use sticks on double system shoots) using Perf Slip.
>
> Hope this helps.
>
> Job
>
> On 23 apr. 2012, at 21:14, Steve Hullfish wrote:
>
> > Avid does allow you to do SUBFRAME slipping of audio to video, but the documentation just tells you that you CAN do this, but fails to tell you HOW to do it. But that's only supposed to work for less than the distance of a frame. My sync is off by three frames.
>
>

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