Time Travel in writing Avisynth Plugins

Apologies for subject title :D In my code for Sandwich, I'm asking for the nth frame and also the nth-1 and nth+1 frames. (Lets call them nA(0),nA(-1) and nA(1) ) After processing, I then have an altered nth frame. nA'(0), which I output. Does this altered frame nA'(0) become the next nth-1 frame, nB(-1), when I move to processing the next frame, nB(0), or will I get the original untouched frame, nA(0)? I hope there are no typos in this :o regards Simon

I hope I understand you correctly - so here is my answer: You can not in any way request frames, that has been touched by your own filter. When you request a frame, you get the previous frame BEFORE it came to your filter, so you will always get frames that has been untouched by your filter. That makes the "time-feedback" situation impossible. Since Avisynth is completely non-linear (opposite VDub), you cannot rely on that the previous frame you processed was frame-1.

Thanks Sh0dan - thats what I'd assumed. regards Simon

Cool — That means things won’t need to get too messed up at skips and transitions. “Random access” sounds good, but why not use a manlier term, like “Happy happy hop hop access”? ;)

I wouldn't want to say "manly" because we wouldn't want to imply that the traits you refer to are proprietary to the male sex.