got a tip not using uncompressed avi on export but instead use prores. but i cant find it under quicktime render options/format?
You cannot export to prores on a windows machine. You can instead use Cineform or DNxHD.
EDIT: Now that I see you 're using AE there is an unofficial way. http://aescripts.com/aftercodecs/
oh that cost 60bucks. maby when i do commercial stuff ill buy.