I have recently upgraded from adobe after effects cs4 to cs5 and the rendering options are a little different. When you choose to compress the video using a specified codec from a list, my usual codec Xvid no longer shows up. The 2 previous versions of after effects (cs3 and cs4) had Xvid showing up in the codec list as an available compressor, but cs5 doesn't have it!! I have tried reinstalling both applications and nothing works. How can I get Xvid to show up in after effects? Please help me.