I'm trying to encode subtitles onto avi files. Which was finally working when I would check the preview (hitting space bar over a file) while it was downloading. But the problem is, the file become too large. It was 1.4GB and now it is 3.7GB. And it won't open when I click. It would say "need QT 7" but then it would open the original file (which would play with soft-subs because of Perian).

I didn't even click on High Quality option! What did I do wrong? I'm using DivX ffmpeg...