I've been using FRAPS to record videos and Windows Movie Maker to edit them for some time now. Recently it has stopped working; when I import the video into WMM I get the audio but the video is blank. I've tried reinstalling both WMM and FRAPS but this made no difference. The problem began in Windows 8.1 and upgrading to Windows 10 made no difference. The video files still play fine in Windows Media Player and VLC, WMM appears to be the only program affected.