Never let anybody’s comments about what might not be a good thing to try (such as using a 300-frame movie as a particle shape image) stop you from trying it at least one time.
It may work fine for you, or even if it’s pretty slow at least you’re able to do it.
I’ve always wanted to find loopable image sequences of different things: birds flying, animals running, dolphins swimming, etc. I think it would be a great resource to have.
Alan.
wondertouch