DVD playback stops and start continuously

We're happy to help, @Webcat.

Since rebooting didn't solve the playback trouble, try running diagnostics on your receiver with the Troubleshoot & Resolve Tool. Be sure to sign in first so that the steps are specific to your account and equipment. You can even schedule a service call from the Tool, if necessary.

Give it a try and let us know if you require further assistance.

Aminah, AT&T Community Specialist