you need to switch to texture processing via gl.slab and gl.pix. you must replace all your matrix operators with texture operators. search the file browser for jit.gl.slab-op.maxpat and cc.scalebias.jxs-help.maxpat . search the reference browser for Video And Graphics Tutorials.

the performance improvements you will get after making this switch will be huge and well worth the effort (make sure you get rid of your pwindows, or convert them to shared contexts preview windows).

Thanks Rob! I'm on it.

Hi Rob, After a few days of work on this: I can get jit.gl.slab-op.maxpat to work fine with small .mp4 vids but not with hap. I can get one hap movie to run by changing the code from: jit.qt.movie 320 240 to: jit.movie @engine hap @output_texture 1 The actual movies are 1280 x 720 and when I add that it doesn't work. But then max console continuously spits out this error message: jit.gl.fbo_texture draw texture to FBO: GL Error: Invalid operation

Here is the patch now with jit.gl.slab-op.maxpat added and a clock to change timing of various op filters.

It seems that a lot of these Video and Graphics Tutorials are written for Max 5, so they don't help much.

Thanks,

Bob

not sure what you're trying to do in the patch. maybe start here:

the video and graphics tutorials were written for Max 7, not sure which ones you're referring to: https://cycling74.com/articles/new-video-and-graphics-tutorials-in-max-7