gl delay

Hi, all,

I'm running a patch using mostly open gl to manipulate video live. I'm having a problem, however, setting up a delay. Right now I'm using jit.scissors to chop up my video into three sections, then run the pieces through a delay (z.jit.delay) before using jit.glue to mash them back together. the problem with this is, as you can imagine, the processing it takes. i've been unsuccessful in figuring out a way to do this in gl--can anyone give me any ideas, or perhaps point me to some outside resources?
any and all help is greatly appreciated.
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(uploading an example of what i'm currently doing, as stated above, but if anyone needs this within a larger context i can upload the full patch)