Re: DVD video-audio sync pissing me off



Richard Crowley wrote:
> blackburst wrote ...
> > I'm now on my 5th outboard DVD burner, a Sony DVD/VCR
> > combo that does both -R/-RW and +R/+RW.
>
> Not clear what an outboard DVD burner has to do with the
> rest of your question?

Read on. I've tried about 5 of them with the same result.
>
> > I gave up some time ago dubbing my MiniDV tapes to
> > DVD via firewire, as the slightest disruption to the MiniDV
> > tape would either stop the dub process or throw the audio
> > out of sync.
>
> Sounds like you either have some really lousy tapes or
> really lousy equipment that you are playing them on.
> I've transfered hundreds of hours of video without
> ever seeing such a thing.

These include many kinds of tapes: My early family tapes are VHS, the
camera originals. Yes, they do have occasional starts/stops and
occasional loss of control track, but nothing an analog device couldn't
handle.

Then there are the recently recorded MiniDV family tapes. Very little,
if any, loss of control track, just an occasional digital
dropot/pixelization. When I'm on the DV cable, forget it. it will stop
the dub. But even when I'm on composite, the audio will unlock from the
video for the rest of the dub. And of course, you can't re-use a DVD-R.

Then there are my archival 3/4" tapes, professionally edited. For no
reason, the audio loses sync. No, the quality of the tapes is not the
problem.

>
> > I've been doing the same dub via the composite AV cable:
> > A disruption does not stop the dub, but it does throw the
> > audio out of sync. This happens about 40% (or more) of
> > the time, and with units by Emerson, GoVideo and Sony.

Emerson EWR-10D4, GoVideo VR3930.

>
> Not clear what "units" you have been trying? There are
> certainly many products out there that are not very good
> about keeping audio and video in sync. OTOH, there are
> some (like the ADVC-100/110, etc.) that are rock solid.

I've used the ADVC100, but that is a DV converter, not an outboard
recorder. Never had bad luck with one of those (DVCPro video to/from a
G4 with FCP).

>
> > I'm getting fed up with this. How difficult can it be to
> > assign a "time code" to the incoming audio and video,
> > and have a chase circuit to keep them in sync?
>
> You didn't state exactly what equipment and software you
> are having trouble with, but seems likely they were not
> the ones that everyone has found reliable.

THAT's the misunderstanding here! I'm using OUTBOARD, not computer!

It seems so simple: Start your analog tape, then press record on the
DVD burner. But it screws up 40% of the time.

.

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