TV show won't play on iTunes- black screen

Mine was finally solved. I contacted Apple and asked their help.

Essentially this is what they said, please update your mac to the newest system (in this case to El Captain). And this will solve your problem with watching the shows. I asked her why is this happening. She said, it's a bug they planted into tv shows, so we'd have to upgrade the system before we can see the show. I did it, and it's working fine now.

This is a 2016 post QuickTime for Windows follow-up:

I don't know why iTunes suddenly stopped playing my video today - it's worked for 12 years without a glitch. The only thing "different" that I did was replace the thermal paste on my CPU. How that could cause the problem is beyond me.

Anyway, I resolved my problem by uninstalling both Flash Player and iTunes, rebooting after the uninstalls and then re-installing Flash Player and iTunes. The black screen went away.

You my friend are a genius! I was trying to play movie on secondary screen. Only would display a black screen! Tried everything, stumbled across this forum moved to primary screen and plays perfect! Thank you very much!

That works, thanks!

This worked for me...thank you! The link in your response doesn't work, I just did what your response said (for anyone reading this).

How do I find the "Command Line/Command Prompt from the Windows Button"?

I have a Mac lap top.

Is this solution only for Windows?

Thanks