MY ITUNES MOVIE DOWNLOAD IN MPK FORMAT WANT TO CHANGE TO M4V FORMAT HOW TO DO

Hi bigstvn,

For help with downloading content to your Mac, test re-downloading the content with the steps below found in the article here: Buy movies and TV shows from the Apple TV app - Apple Support

"Buy a movie or TV show on your Mac

1. Open the Apple TV app.
2. Click the Store tab.
3. Click Movies or TV Shows.
4. Click a movie or TV show that you want to buy.

• Buy a movie: Click the Buy button. If you don't see the Buy button, scroll down to How to Watch, then click Buy.
• 
• Buy a TV show season or Season Pass: Scroll down to How to Watch, click Buy Seasons, then click the price next to a season or Season Pass.*
  • 

5.Sign in with your Apple ID to complete your purchase.

To see all of the movies and TV shows that you purchased, go to the Library tab."

You can also find helpful information here: If a media file doesn't open or play on your Mac, iPhone, or iPad - Apple Support

Cheers.