It seems a little buggy. Like choosing text or outline colors. It seems like you should only choose them once because if you hit them a couple of times it seems like it doesn\'t work anymore. You don\'t get a confirmation when you choose a color, but at least when you choose the text color, the pixel number changes.
I had been struggling with a DVR TVrip (DVD). I recoded it to an .avi file but it seems that using the VOB\'s from the DVD worked better. I got a text width of 10, and it is working so it can detect width values greater than 5, especially if the source is a 720 width DVD.