Airplay only streams audio

Hi. This depends on the app you're using and how you use it.

For example, Netflix will not AirPlay downloaded videos. This is determined by the Netflix app.

Which app are you using?

Are you streaming from the internet, or downloaded content?

Hi AmyFeets. Both ways of enabling basic AirPlay (not mirroring) work the same. In this mode, the video URL is sent to Apple TV, which streams directly from the server. Some servers will not do this; maybe they need a cookie or something. Are you able to stream something generic, like vimeo.com? If so, then your problem is site-specific. Maybe the provider made a change that causes this.

what if you airplay mirror Use AirPlay or Screen Mirroring on your iPhone, iPad, or iPod touch - Apple Support

Developers can choose to block airplay at any time, and if it's a glitch it is up to them to fix it.

It would be something the developer did, not Apple.