If display issues occur when trying to add a video file as a source, try the following:
Solution 1
- Go to Tools > Settings and on the Advanced tab, switch the option from Prefer CPU for video processing to Prefer GPU for video processing.

Solution 2
- Go to Tools > Settings and on the Advanced tab, uncheck Use Media Foundation Engine for video playback.
This option is only available if you have your Video processing mode set to Prefer GPU.
