my level runs keep getting rejected because my timing is incorrect. im using avidemux. not sure if i need something better than that. im not sure how im getting the timing wrong. its extremely hard to tell when the entire screen is white because it fades into the level.

you can see it quite well if you have good brightness on your monitor. i personally use vegas to time mine. if you still got problems, try changing your capture card settings. also you can enable the centiseconds timer and the "lag frames as life count" code so you can calculate the actual real time.