iTunes video playback is scrambled since update to iTunes 12.7.3
Today I downloaded the latest Mac OS 10.13.3 update which included the update to iTunes 12.7.3.
Since doing so, none of the downloaded movies and TV programmes in iTunes will play properly - the soundtrack is okay but the picture is all nonsense like it's been scrambled.
Videos ripped to my iMac and stored in iTunes play fine - it's just the downloaded videos that won't play properly.
Tried resetting NVRAM but no luck.
Any ideas??
iMac with Retina 5K display, macOS High Sierra (10.13.3), iMac Retina 5k Late 2015 27-inch