Posted by Richard Crowley on 10/07/07 01:12

"Rick Merrill" wrote ...
> Richard Crowley wrote:
>> "Rick Merrill" wrote ...
>>> Does anyone ever measure the accuracy of their blackburst
>>> timing?
>>
>> Do you mean the subcarrier frequency?
>> Or the length of the various portions of the waveform (back porch, 8
>> cycles of burst, etc.)
>> Or the long-term timing (agreement with wall-
>> clock, etc.)
>>
>> Is there a specific problem you are trying to solve?
>
> Long-term timing would seem to be the closest thing
> to what I am asking about, e.g. audio synchronization

If you are concerned about ability to sync audio
and video on separate recorders, the easiest way
to check would be to just run you own experiment.
If you want a more specific answwer, need some
details, etc.

My experience is that modern consumer and pro
equipment with mass-market, non-precision crystals
can hold sync remarkably well. Where I define
"remarkably well" as: I would have noconcerns about
shooting a 10-minute segment. Even longer is quite
managable by slipping the video a few frames against
the reference audio track in your favorite NLE. This is
a semi-regular topic around here. Searching the GG
archives may be instructive.

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