[PD] synchronised video outputs

[marius schebella]

I am also working on a project like this (with thomas grill, who solved 
many problems before I even thought of them...). in principle 
synchronisation works fine.
now your may ask why do other people pay so much money for expensive 
hardware?
the problem lies in details: first resolution: for some cases you want 
to go with the highest available resolution 1080p (and in the future 
even more), and suddenly you will see small appearance of jitter, mostly 
because quicktime is different inside a quicktime player and outside 
quicktime, also because in most cases you have to convert color formats.
then, compensating a drift without losing frames is very tricky.
from my experience so far, Pd solutions only work up to 720p and only if 
you use a drift compensating algorithm - sending a bang for every frame 
over the network always causes jitter (although you may not notice).
It is no big effort to try a pd version and see if you are happy with it.
marius.

altern wrote:
> hi
> 
> I need to have several video outputs that run in sync. A friend who 
> works in a art exhibition space told me there would be couple of 
> solutions for this but both involve buying pretty expensive equipment 
> like special DVD players.
> 
> I thought then that a solution for this issue could be to have several 
> computers on a local network playing video (with GEM) and synchronise 
> them via OSC. But I dont have any experience doing such a thing, never 
> used OSC for anything similar. Also I dont have a clue about how to 
> synchronise together videos.
> 
> Has anyone done anything similar? any experiences to share?
> 
> thanks!
> 
> enrike
> 
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