after i updated to 13.3.1 my quick time player is not working at all

Greetings truyenmoi, 

Here are some steps to take when an app is working as expected on your Mac. If an app on your Mac stops responding, closes unexpectedly, or won’t open 

1. Quit and reopen the app

Quit the app, then open it again. If the app won't quit, force the app to quit. Then check to see if the problem with the app is fixed.

2. Restart your Mac

Restart your Mac. Then check to see if the problem with the app is fixed.

3. Check for updates

To see if updates are available for the app, open the App Store, then click Updates. If updates aren't available for the app, update the software on your Mac. Or if you didn't get the app from the App Store, look for updates to the app on the app developer's website. Then check to see if the problem with the app is fixed.

 4. Reinstall the app

Delete the app. When you do this, you might lose data that was stored in the app. Then redownload the app. If you didn't get the app from the App Store, redownload the app on the app developer's website. Then check to see if the problem with the app is fixed.

Thanks.