Sam Goldwasser wrote:

writes:



Hello world.

I would like to put together a solution permiting me to project 3
different sources
of video (or High definition video) in a synchronised fashion.
For example lets say that I have 3 diferent video signal.

Signal 1 displays the number 1 after 1 second of projection
Signal 2 displays the number 2 after 2 second of projection
Signal 3 displays the number 3 after 3 second of projection

Then they all diplaz together the number 4 after 4 second of
projection.


I have gathered that I can probably do that with 3 syncronised dvd
readers,
presumably one master and 2 slave.

My question is could I do that from a powerfull pc with maybe 3 video
cards and reading directly from one / several vast drives or one video
card with 3 outputs. Any sugestions welcome. I am a java programer so
if anyone is aware of an api or java tool kit that would give me the
basic element that could be cool to.



You will have to sychronize not only the timing of the material, but
the video frames as well. Otherwise, there will be annoying vertical
rolling as the video monitor or TV resyncs after each switch.

If you use a single video card with multiple outputs, I would assume they
can be synced together (or will be automagically). But with multiple
drives or DVD players or whatever, this may not be possible.

--- sam | Sci.Electronics.Repair FAQ: http://www.repairfaq.org/
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I think that three Time Base Correctors sync'ed off of the fourth video
would work. Expensive though.

Bill K7NOM