If you do a search for AVI Request Format Error, you will get a TON f hits. This is a common problem and the solution can be found here:
https://forums.creativecow.net/readpost/23/856282
In short – and this is a quote from one of Elvis Deane’s previous posts:
nipped from the pI FAQ:
particleIllusion currently has problems with DV formats. This problem is expected to be fixed in the next update of particleIllusion (3.x). As a work around, you can use VirtualDub to convert your AVI into a codec which particleIllusion can use, or to a sequence of images (PNGs, TGAs, TIFs, etc.).
You can also download the Panasonic DV codec, which should allow you to bring DV AVIs into pI, but beware! I’ve found that it makes some video editing programs have trouble importing AVIs encoded with certain other codecs (divx, xvid).
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Aharon Rabinowitz
arabinowitz(AT)yahoo(DOT)com
http://www.allbetsareoff.com
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