hello,

i couldnt find anything here about it so i guess i have to ask ... is there an existing patch to synchronize two pd / gem (running on different computers, connected by ethernet) to playback a synchronized videos (for a two channel video installation)? If not, theoretically how can this be done? When i was getting into GEM some years ago, there was also a limitation for the length of the video that could be loaded (because it was loaded into the RAM entirely) AND the video player could not playback sound. do these limitations still exist? or does maybe anyone know a solution for this with other software that is specifically made for this purpose? Timecode synced DVD players are not an option - too expensive to rent.

cheers,
till

you could transmit smpte (or any timecode) via [netsend] and [netreceive]. Ja?

Well, i even have a Quicktime Java Player that a friend programmed me that is sending its frame numbers via OSC. The question would be how to keep the other computer in sync. i guess it is not possible to just set the other video to the same frame number at least if you want to have syncronization frame accurate... rather one computer sending out a "SYNC" pulse and the others advancing the video along that. This still doesnt solve the problem of how to play audio along, also in sync. Anyways, i was wondering if somebody already dealt with this problem because my PD knowledge is not enough to make a patch like that anyway.

really not a gem/visual person,

but i have read from various other people that it's sometimes a good idea to record the audio from your video into a separate audio file and play that using [tabread4~] or another of pd's audio players.

I don't know what the speed limitations of OSC are but, you could send a bang every frame and sync the second computer using single buffer mode.

GEM computer 1

[gemhead]
|
[t a b]
| \
| [send /foo $1(
| |
| [sendOSC 9900]
|
|
(gem chain)

computer 2 (single buffer mode)

[dumpOSC 9900]
|
[OSCroute /foo]
|
[t b b]
| \
| \
| [gemwin]
|
[gemhead]
|
|
(gem chain)

hello tillt,

I'm actually researching exactly the same thing: for a 2 channel video installation, I'm looking for a way to have 2 mac mini computers playing a front and rear part of the same video in sync.

how far are you on this?

(I've just started to get acquainted with Pd since yesterday, as a friend notified that this way of programming might be able to do the trick)

best!
B401

Hi there pd community,

At the moment I was wondering the same thing, synchronized playback on multiple computers via netsend... I see that these post are from some time ago, so I hope somebody has the answer/patch i'm looking for..:)

thanks in advance..:)

R3PC0N

I have no experience of synching two computers, but if you just want to play to up to three different "monitors" check out the matrox TrippleHead2Go external monitor extension card

http://www.matrox.com/graphics/de/products/gxm/th2go/displayport/