Yup, thats weird, simple solution though.

Thanks Andro for your reply, if your remove the arguments it will be default a 4 planes matrix, and i wanted a direct 1 plane matrix image.

i already changed the parts with this importmovie thing in my max6 patches to let it work in max7, but i rather not have to check and fix my max6 patches to let them work in max7.

Maybe use jit.gen. a one plane matrix is just the alpha data. Putting it into jit.gen swiz a vec 0 to output 1

Should be faster as well.

hi aartcore. this is an issue with the AVF engine reading single plain images. you can either set the Video-Engine preference to qt for Max 6 behavior with jit.matrix importmovie, or you can use jit.movie @engine qt to read the image:

i'll take a look and see if avf engine can be improved to in this area.