[Avid-L2] Re: Avid + Drifting Audio

Now it sounds like you confusing avid's ability to not notice up to 6 frame jumps on long captures with the supposed drift on firewire. Drift is different than offset. It has long been known that since Avid does not detect timecode jumps of less than 6 frames during capture you can have differences during a batch capture later. I'd really like to know what part of the thread I missed here.

To quote Bob Zelin "No Professional uses Firewire". Sure there are some required exceptions but capturing for offline is not one of them. If your serious about frame accuracy use RS-422 to control the deck even if you use firewire to get the video in.

I don't doubt you have a lot of experience with Firewire capture offset since time code is the lowest priority in the stream. So what is it drift or offset those are two different beasts? If changing the clip name solved the drift issue please send the necessary elements to Avid so they can reproduce and fix the bug.

--- In Avid-L2@yahoogroups.com, Martin Thorbjörnsson <kontakta.martin@...> wrote:
>
> People should really read the entire thread before just restating things :)
>
> I have a lot of experience with drifting timecode on Firewire. (It mostly
> causes problems if you are going to make an online with SDI later on). SO:
> If you are going to make an online later using SDI capture you might have to
> eye-frame the entire project a few frames back or forward for every clip.
> (Ive done this for several features and it takes a cuouple of hours.
>
> More rarely I have also seen audio drift away from the DV when capturing
> with firewire. I usually just eyematch it back up.
>
> JohnRobMore: I was editing assistant on a big commercial just a couple of
> weeks ago. They had a lot of problems with sound. One clip had sound that
> drifted differently everytime it was played. I noticed that it had another
> clip with the same name in the same bin. I changed the names and the drift
> disappeared. I have no idea why this happened. But it is worth noting that
> it was on a Avid Xpress Mac System and it may have been fixed on MC.
>
> Of course, I'm not saying this is what is really wrong with this guys
> project. But it may be.
>
> Best,
> Martin
>
> +46 73 789 73 42
> kontakta.martin@...
>
>
> On Sun, Nov 15, 2009 at 05:44, johnrobmoore <bigfish@...> wrote:
>
> >
> >
> > I've never seen that problem that I would blame on clip name. Since I can
> > rename clips all day long and avid links based on tape and timecode for
> > captured media I don't see how clip name effects anything other than the
> > text in the bin and timeline. I've seen clip names in a sequence change when
> > a sequence relinks to a different clip that has a different name. I'm not
> > saying you're wrong but I don't see how clip name could have any effect on
> > audio drift the way I understand it. I'd love to learn something new here.
> >
> >
> > --- In Avid-L2@yahoogroups.com <Avid-L2%40yahoogroups.com>, Martin
> > Thorbjörnsson <kontakta.martin@> wrote:
> > >
> > I have seen this cause audio drifts in
> > > Xpress before. Avid dont like clips with the same name.
> > >
> > > Best wishes,
> > > Martin Thorbjörnsson, Sweden
> > >
> >
> >
> >
>
>
> [Non-text portions of this message have been removed]
>

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