Re: DVD video-audio sync pissing me off



whodothere wrote:
> In article <1122306894.959104.219990@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>, "blackburst@xxxxxxx" <blackburst@xxxxxxx> wrote:
> >
> >
> >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.
> >
>
> One, why are you using dvd-r's , use a DVD-RW and erase if problems arise.

A money issue. I'm doing huge numbers of these, and the -RWs cost more.


> Two, why are you using composite and not S-VIDEO?

First, I'm just a bit lazy. But second, I work in TV and I'm used to
Betacam (component) and DVCPro or DVCam. I just don't see a huge
difference between a composite signal and an S-signal.

>
>
>
> >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.
> >

.

Relevant Pages

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