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Posted by Richard Crowley on 02/09/07 13:13
"Gary Eickmeier" wrote ...
> "Richard Crowley" wrote ...
>
>> We have seen people come through here in the recent
>> past with sound dropout problems. IIRC, the consensus
>> was that it didn't appear to be an unusual symptom of
>> worn or mis-aligned equipment.
>
> Well, are you going to tell me what it WAS?
Sorry, I thought it was obvious. All tape is analog underneath
the digital facade. As the ability to read back the zeroes and
ones continues to degrade, the error detection and correction
scheme can't keep up and you start seeing and hearing the
effect of the dropouts.
The nice thing about digital is that it covers up a certain
amount of this degradation.
The bad thing about digital is that it covers up a certain
amount of this degradation. i.e. we don't know that there
is a growing problem until it becomes so bad that the
error detection/correction can't handle it and it bursts
forth into our perception.
>> Do you have feeder VCRs in your edit suites?
>> You could use them to "archive" the video from whatever
>> alternative storage/capture method you used.
>
> We have the JVC VS-30 dual deck. It has been in to
> repair for the tape drive failing. They did a pretty good
> job of repairing it. It plays most Mini DV tapes OK, but
> this last wedding, it had sound dropouts all through one
> tape, but it played fine from the camera (and captured
> fine). The format just doesn't seem to be very robust.
This sounds like you have an interchange problem with
either the JVC dual deck and/or with one or more of
your camcorder(s). I'd have the camcorder(s) checked
ASAP before you end up with a whole bunch of tape
that is out of interchange.
>> My opinion is that we still don't have anything generally
>> available that even comes close to the cost and longevity
>> of digital mag tapes.
>
> Are you buying the premium priced tapes Richard? I know
> Sony has two price ranges of Mini DV tapes. We never
> worried about the high priced spread too much, because
> the regular ones did just fine. Maybe now is the time to
> upgrade.
No. I am buying the cheap stuff (in miniDV). ~$5/each
ordinary Sony tape.
I am buying the "ordinary" DVCAM tapes. There may be a
"premium/broadcast" grade of DVCAM, but I have never
felt any need for it. I tend to use tapes once, i.e. the first
pass to record the event, and then the second pass (on the
feeder VCR) to capture it into NLE. Then it pretty much
sits on the shelf for eternity.
> Might also calculate the cost of storing Firestore info on
> hard drives. They are about 50 cents a gig now. So a two
> hour AVI file would cost about $13 worth of hard drive space.
> Then, when Blu Ray discs get cheaper, we could use those.
> SD or HD video, take up the same amount of space.
I have ZERO faith in either hard drives or optical discs for
long-term archival storage. 99.99999% of the world's
backup and archival data is stored on magnetic tape by
people who can afford anything they please. Good luck.
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