Two releases in one day! I didn't expect to fix this one so fast!
There was a bug (#135) where resolutions with certain dimensions would produce garbled video (fixed in #144). While this didn't effect 'standard' resolutions like 1920x1080, 1280x720, 640x480, etc it still tripped people up regularly.
This release fixes that issue (hopefully). Please open an issue if it doesn't.