Originally Posted by
ucdcrush
Use Kinovea. It's free, well featured, and has a "bike fit" overlay that you can use to get all the angles you want. You can load pictures or videos, and videos you can step through at various speeds or frame by frame. It's awesome.
I wish they had an Apple version.
What I did at the time was to take a video, and then scroll through to find max and min angles (eg: for the knee), took a screenshot, and imported them into Apple's Keynote, overlayed lines, and obtained the intersection angles. A bit clunky, but it worked.
Kinovea sounds like a far better option if you have Windows on hand.