Posted by Richard Crowley on 01/11/23 11:45

"Martin Heffels" wrote ...
> "Richard Crowley" wrote:
>
>>Yes. I have done it. It is easier than you think. Can we assume
>>that you have the "scratch" sound from each of the each of the
>>camcorders? If so, it is easy to line up each of the camera
>>tracks against the master audio track by looking at the wave-
>>forms on the timeline and listening to the combination of the
>>master sound track and the sound track of the camera you are
>>aligning.
>
> This is not the most accurate method. The further away the camera's where
> from the sound, the more risk you run of the sound arriving later, and if
> you synch up on the waveform, you will end up with the pictures out of
> synch for the camera's furthest away.
> Remember: image travels at lightspeed, sound travels at soundspeed.

I didn't say it was the "most accurate method" I claimed (but did
not say explicitly) that it is the fastest and easiest method of bringing
multiple angles within a few (~5) frames of sync. After that, if you
can see the difference, slip it to wherever you want. It took longer
to read this paragraph than it takes to actually do it.

Note further that in NTSC-land, 1 frame of video is ~33 feet.

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