feet to millisecond conversion?

[bryanbassett]

ahh the audio version of what I do to sync digicams ....I flash a camera and use the flash to sync all the cameras.....Plus I get the whole crowd waving to start the show ..

great tips thanks

Bryan

[airon]

Good grief lads. Look at all those crazy numbers.

For the metric folks :

Speed of Sound at 20 degrees Centigrade (20 C) is 343 meters/second.

+/- 0.6 meters/second for +/- 1 degree Centigrade


This means that 343 mm is travelled in 1 ms time at 20 degrees Centigrade.

[Bastiaan]

believe it or not, but the clapping trick is used a lot in syncing camera's. You can get fine and expensive gadgets to do that rick for you, but pointing several camera's at a guy that gives a clap still is the cheapest. And when done correctly takes about 5 seconds to align in an avid or other nonlinear system. But the problem is that all the people on the set look like they've heard it thunder in Cologne (Dutch proverb.....wich means they look like they've seen water burn....)

[bryanbassett]

when doing live band video I used to use a single snare shot with all cameras on it and used the audio to sync..of course the father back the camera the more it would be off...now using a camera flashed into the house with all the the minidv's aimed at it I get a one frame visual sync that is really easy to find and my audio maintains its real distance. Not that I'm using the camera audio..but I get all the film aligned and I just sync it as a group to my multi-track mix stems.

I still want one of those clapper things..though they look dangerous for a guitarist...CLAPPP take 3....fingers