4 ms·
Genlock is absolutely not needed to overcome clock skew; sync to nearest frame at cuts and resample the audio to the frame timings. Plus most modern equipment h
by gorkish 2y ago
Genlock is absolutely not needed to overcome clock skew; sync to nearest frame at cuts and resample the audio to the frame timings. Plus most modern equipment has really great clocks and I would not be surprised if it drifts less than hypothesized.
Let's imagine we are shooting 24fps on a couple of iPhones; what is the clock error required to drift out by 1 frame over 10 minutes? The answer works out to about 70ppm. The iphone uses a MEMS oscillator with about a 5ppm error, so ... eh? Just doesn't seem likely to be a big issue for regular stuff. If you are shooting scientific data or something maybe this matters more, but you'll have to account for it in that context no matter what.