Whether Youtube or Quicktime or whatever, the video just stops and starts every few seconds.
Oddly this started happening simultaneously with the Music app opening spontaneously and refused to stay "quit" for more than a half second --- just constantly re-opening.
Mac mini 2018 or later
Hello trtkane,
Thanks for reaching out to Apple Support Communities. We see you have some questions about your video not working as expected on your Mac, and we'd like to help. Do you notice this happening on more than one network? Does Safari open and work as expected, what about other features that use a network connection with your Mac?
When you create a test user account on your Mac, does this happen there too? This can help isolate the issue happening with one account, or more than one: Change Users & Groups settings on Mac
Create a new user or group.
Click the New Account pop-up menu (you may be asked to enter your password), then choose a type of account.
•Administrator: An administrator can add and manage other users, install apps, and change settings. The new user you create when you first set up your Mac is an administrator. Your Mac can have multiple administrators. You can create new ones, and convert standard users to administrators. Don’t set up automatic login for an administrator. If you do, someone could simply restart your Mac and gain access with administrator privileges. To keep your Mac secure, don’t share administrator names and passwords.
•Standard: Standard users are set up by an administrator. Standard users can install apps and change their own settings, but can’t add other users or change other users’ settings.
•Sharing Only: Sharing-only users can access shared files remotely, but can’t log in to the computer or change settings. To give the user permission to access your shared files or screen, you may need to change options in File Sharing, Screen Sharing, or Remote Management settings. See Set up file sharing and Share the screen of another Mac.
•Group: Groups allow multiple users to have the same access privileges. You control a group’s access to your shared folders by setting access permissions in the File Sharing options in Sharing settings.
See Add a user or group.
Let us know, and we'll get the best options from there.
Regards.
Video Stutters --- Stopping and Starting Intermittently
