Re: syncing 2 16mm projectors

From: db (email suppressed)
Date: Wed Sep 26 2007 - 10:38:45 PDT

I have run tech for three dance performances in town that required
syncing 3 dvd sources. We've done the shows about ten or 15 times now
and we've had no problems keeping them in sync. My biggest concern
was the fact that the films needed to stop & start four separate
times. I just stacked the three players and used a single remote. The
entire show runs a bit over an hour with the longest continuous run
between stops being about 15 minutes. Worked like a charm.

I'm not saying there wasn't any drift but if it did occur it was
invisible. Probably would have shown up in the audio if we had
monitored the players simultaneously because two identical audio
sources even one frame out of sync starts to produce an echo effect.


On Sep 26, 2007, at 3:09 AM, Joost Rekveld wrote:

> Did you ever actually try this ?
> I did, for two projections during a dance-piece, and two dvd-
> players of the same brand, same type, will typically give you about
> 5 to 10% difference, say about two minutes out of sync after half
> an hour. I've never met somebody who could explain to me why this
> happens, but it is reality.

For info on FrameWorks, contact Pip Chodorov at <email suppressed>.