can choose Microsoft Video1 Codec. any other choice is impossible because of unsopported codec or invalid compression.otherwise i am runnig a prog where i can use the indeo video 5.10 codec for avi render, im an unable to use in poser, it causes the errormsg as descript above.is that a poser specific problem or a problem for programs, to share codeces or keep it in use????????? I also dont know ho to get free from my pixelated avi's???(of course i'm using 'antialias') Any advice for an interested dummy Please help i dont get a clear render out of poser thanks in advance