Thanks for the links, very interresting, but my main problem was that I didn’t know that wmv9 is the vc-1 codec. But still it looks very crappy espacially because I can’t select 25 Mbps just 10.000kbps. And with the particles I get a terrible gradient with steps. Mhm is there a solution for this problem? (I used the preset HD 1080 25fps)thanks nora