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Synchronizing Multiple Video Streams Across Multiple Monitors

darien.train (1752510) writes | more than 4 years ago

User Journal 2

I work at a production company that creates media and media installations for large corporations. A common refrain amongst our customers is the desire to play synchronous video across multiple computers/monitors to achieve that "integrated" look in a trade show booth or corporate lobby. We've gone down this road before using lumbering proprietary solutions such as WATCHOUT but they all involve a lot of specialty hardware and an unnecessarily

I work at a production company that creates media and media installations for large corporations. A common refrain amongst our customers is the desire to play synchronous video across multiple computers/monitors to achieve that "integrated" look in a trade show booth or corporate lobby. We've gone down this road before using lumbering proprietary solutions such as WATCHOUT but they all involve a lot of specialty hardware and an unnecessarily tedious setup.

Is there an open-source or super-easy proprietary solution out there that can do this using a simple protocol like midi or an ethernet-based I/O that can trigger basic playback events simultaneously?

The basic ability to slave a bunch of playback machines to a single master control machine is a must-have.

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Seamless display merging? (0)

Anonymous Coward | more than 4 years ago | (#32881092)

It looks like this watchout thing does several different functions.

For the seamless merging of multiple projectors into one giant display, on a small scale (probably 2x2 at most with two dual-head cards) you could probably do it on one PC with multiple video cards and carefully aligned projectors. Xinerama can probably even declare the display viewports to overlap by a few pixels so you can get them lined up. As far as getting a video to play across multiple cards... probably not with hardware acceleration (and I doubt even high end hardware could scale 1080p to several times normal size and playback without stutter).

For synchronizing the same video on different displays, there's even more work to do: the monitors need to be mostly identical or else signal processing times will differ and never match. Ideally you'd use equipment which uses an external vsync signal generator so everything starts every frame at the same time (otherwise some equipment will be off by as much a frame).

Re:Seamless display merging? (1)

darien.train (1752510) | more than 4 years ago | (#32887048)

Splitting a single video signal into a projector stack is a much easier process and we pull that off quite a bit. It's the opposite relationship that always kills us. Any specific equipment or software recommendations would be appreciated.
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