Hey @Songvessel could be a number of things! Suggest checking out the following KBs on Troubleshooting Video Issues and let me know if any of those suggestions help!
Hallo, after todays last automatic update of the client to Version: 5.13.3 (11494), my video is freezing to, and video is showing green/white lines. I work on an HP notebook Window 10 prof. We had on Sunday in a groupmeeting one participant with the same symptomes - he neede to leave the computer an participate from the mobile. I need a fast solution - I checked already Troubleshooting Video Issues. best thias