Forums > Jitter

mixing three cameras in real time

Jan 27 2007 | 9:05 pm

I have three cameras grabbing 30 fps each. I would like to mix them together but the image inside the jit.pwindow flickers. Does someone know how to mix three signals without flicker?


Jan 27 2007 | 10:24 pm

This depends entirely on what method (or objects rather) you are using to mix down the three sources. the inlets of jitter objects dont mix incoming matrices on their own, unlike MSP objects. sending multiple streams to a single inlet will cause this flicker, as the jit.pwindow object is simply displaying the last matrix it recieved. however I am guessing you already knew this and are using jit.op or jit.xfade to mix the streams? in which case flicker could be coming from a timing issue, a lack of sync between your sources.

the easiest way to deal with this would be to create 3 jit.matrix objects to serve as buffers, which can be driven with a metro to control the timing.

also check out the jitter tutorial on 4 way slab mixing, it works pretty well…

Jan 30 2007 | 6:25 pm

Thanks for your consideration. I tryed with two jit.xfade objects. Flicker is gone now. I will also try the jit.matrix buffer way of patching soon.
Thanks again


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