In Apple: When I add subtitles into a DIVX video file & reburn it to DIVX...

...format in Quicktime Pro it...? In Apple: When I add subtitles into a DIVX video file & reburn it to DIVX format in Quicktime Pro it only creates a 1 minute file. This happenes with about 50% of the DIVX videos I get. What gives?! I have Perian installed to handle the subtitles, but when I want to create a new DIVX file with the subtitles burned in, My Apple Tower spends 25 minutes processing it but only gives me the first 1 minute of the movie after all that time? Is there some sort of protection going on on the Computer side or the video file itself?