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.

Evening all,
Fred

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.

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I think that three Time Base Correctors sync'ed off of the fourth video
would work. Expensive though.

Bill K7NOM

TBC's only have a window of correction about 32 lines. He needs 3
"Frame Sync's", still, as you said, very expensive.

Jeff, Sam and Bill thanks for your contribution,

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.

Maybe I wasn t clear enough . The assignment of one picture to one
screen stays static, it is one signal per screen, As the pictures are
never mixed on the same screen.
Signal 1 always stays on screen 1, signal 2 on screen 2 ect... surely
The synch only needs to be done on the material. Or Am I wrong? Are
there any sofware to do this?

Fred

writes:

Jeff, Sam and Bill thanks for your contribution,

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.

Maybe I wasn t clear enough . The assignment of one picture to one
screen stays static, it is one signal per screen, As the pictures are
never mixed on the same screen.
Signal 1 always stays on screen 1, signal 2 on screen 2 ect... surely
The synch only needs to be done on the material. Or Am I wrong? Are
there any sofware to do this?

If you're not switching the video signals to the screens, then sync
will be fine.

But then what are you asking for besides being able to output several
video images from one PC?

--- sam | Sci.Electronics.Repair FAQ: http://www.repairfaq.org/
Repair | Main Table of Contents: http://www.repairfaq.org/REPAIR/
+Lasers | Sam's Laser FAQ: http://www.repairfaq.org/sam/lasersam.htm
| Mirror Sites: http://www.repairfaq.org/REPAIR/F_mirror.html

Important: Anything sent to the email address in the message header above is
ignored unless my full name AND either lasers or electronics is included in the
subject line. Or, you can contact me via the Feedback Form in the FAQs.

Hi Sam,

But then what are you asking for besides being able to output several
video images from one PC?

As you said I am looking to

1) being able to get 3 video images (possibly High def video) and one
sound output out of a pc.

2) being able to synchronise the content.


I don t know if anyone has ever done anything like that. At the moment
I am looking around
Matrox technology as they seem to deal with multiple display, stuff
like flight simulator ect.
If you feel like it have a look at the folowing link and tell me what
you think.

http://www.matrox.com/mga/workstatio...ltidisplay.cfm

Fred