I'm new in AE
So here is my problem
I need an avi XVID movie with mp3 sound
When I chose AVI, audio format options are greyed out
When i export the audio is AAC, but i need it as mp3
And,i don't want to export the video multiple times because i have to compress it every time, losing quality
Export as uncompressed and encode it in VirtualDub etc.. AE has never allowed the hacky kind of encoding that these formats use. that aside, AE being unable to du multiframe analysis and compression due to its nature, you get much better results elsewhere, anyway.
I tried it and it works