hi ben, what mpeg decoder cards with 4 outputs from the same machine are you refering to? I will need to get something like that for an installation, but don't really know much about it.
best, J On Mon, Feb 25, 2008 at 8:47 AM, B. Bogart <[EMAIL PROTECTED]> wrote: > Check out Jaromil's ivysync, which uses those mpeg decoder cards for > synced output. I think you can do 4 outputs from the same machine, but > I'm not sure if that is a software limit, or just the number of slots > available for those cards. Jaromil did mention something about a network > sync feature also. > > As far as I know these decoders are all only 640x480, I imagine the ones > working on linux certainly are. > > .b. > > marius schebella wrote: > > 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 > >> > >> _______________________________________________ > >> PD-list@iem.at mailing list > >> UNSUBSCRIBE and account-management -> > http://lists.puredata.info/listinfo/pd-list > >> > > > > > > _______________________________________________ > > PD-list@iem.at mailing list > > UNSUBSCRIBE and account-management -> > http://lists.puredata.info/listinfo/pd-list > > > > > _______________________________________________ > PD-list@iem.at mailing list > UNSUBSCRIBE and account-management -> > http://lists.puredata.info/listinfo/pd-list > -- Jaime E Oliver LR [EMAIL PROTECTED] www.realidadvisual.org/jaimeoliver www-crca.ucsd.edu/ www.realidadvisual.org 9168 Regents Rd. Apt. G La Jolla, CA 92037 USA
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