iPhone 13 pro max video freezes

Howdy ManBearPig78,

Thanks for posting in the Apple Support Communities.

Let's first make sure you're up-to-date with the latest iOS version to rule this out as being related to what's occurring. If an update is available, be sure to complete a backup of your information. For assistance with backing up or updating, check out this resource: Update your iPhone, iPad, or iPod touch - Apple Support

After confirming you're up-to-date, lets make sure there is enough available storage on your iPhone 13 Pro Max. If you don't have much available space, this could stop videos from recording so be sure to confirm this. You'll want to go to Settings > General > iPhone Storage to check this out.

Lastly, work through the steps of the following resource to see if they help. If the steps don't help to clear this up, let us know if the video continues to record after you're able to review the video. If you're seeing the video doesn't save, let us know.

If the camera or flash on your iPhone, iPad, or iPod touch isn't working - Apple Support

We hope that's able to help and look forward to hearing back from you.

Cheers!