Length of video file when converting

[knobrien]

I sampled the demo for the video conversion software and the demo explained that I could only convert 10 seconds. I liked what I saw so I purchased a licenced copy. I'm trying to convert a DVD vob file to wmv and it stops after about 80 seconds. I've tried FFMPEG in the decoder options, I've made sure the it's set on the correct codec. I'm using a PC running XP. Any suggestions.