The live jpeg glitch plugin has gotten some pretty heavy optimizations over the past few days. Optimized double buffered asynchronous GL read-back, better threading and reduction of memory copies means 720p glitching at 30 fps on my 3 year old Mac Book Pro. Still more to do...

The Quality parameter is the jpeg compression amount, 0 for very low quality, blocky glitches, or higher for more clean, higher quality compression and possibly different looks (especially above 90%).

Glitch Offset is where in the memory of the encoded jpeg you will put your errors. Use this to move the glitch around the frame.

Glitch length is the amount of bogus data to re-write in the jpeg. The longer, the more blocks and possible complete decoding failures (going to gray after a certain amount). Keeping this small can have subtle color shifts, going large makes it crazy.

Re-Glitch, when enabled, randomizes the bogus data copied into the jpeg every frame, rather than only when you change the above parameters. If you find settings you like on a particular image, you can disable "re-glitch", and generally get the 'same' sort of glitch on new images. Useful for 'parking' on colors or looks you stumble on.