counter + jit.qt.movie should do the trick

Try Recipe 29: https://cycling74.com/tutorials/jitter-recipes-book-3/

hello as always a pretty nice patch from andrew! i wanted to incorporate it in one of my patches where i also control the video rate and have the audio part on. what i recognized is, that rate changes dont have any effect on the stutter loop. i think this is due to the different methods driving a qt movie. is there a possibility to combine those so that it would be possible to slow down or reverse a 15 frame loop for example? what would be a good way to smooth the audio? thx

If you don't want to drive the playback with frame messages, which results in silent playback, there are other ways to achieve what you want. My suggestion is to use the rate attribute to alter speed and then use "jump -15" to skip backward 15 frames. This will allow you to have video and sound handled by quicktime.