Aha, I see. Now this problem, when I try to use your patch with pix_movie it flashes green stroboscopically and repeats the entire video frame in all 9 blocks of the GEM window; and when I change the grid from 3x3 to 1x5, it does crop, but creates space between the individual crops. In gems.multi.crop the video loads fine and crops fine with the 1x5 setting.  I have tried to hook up the parameters like you did in your example, but the patch is set up quite differently from multi.crop.  How would I go about separating the cropping values in multi.crop from each other so that I can control them dynamically?
<div><br></div><div>Thanks,</div><div>Michael</div>