In the top right corner of the video player, once an AirPlay receiver is on your network. Press it and pick your TV.
On sites that assemble video inside the browser, the button opens a small Airlift player over the page and continues from where you paused. Press AirPlay there — the strip at the bottom is Safari’s own — and the stream goes to your TV. “Back to page” at the top returns you to the site.
Open the Airlift panel from Safari’s toolbar. The first line always says what is going on. The usual causes:
The TV is off, asleep, or on a different network from the Mac. Guest Wi-Fi, a separate network for smart devices, or client isolation on the access point will all do this.
The player has a working button of its own, so Airlift deliberately does not add a second one. Use the site’s button.
Scroll to the video. The button follows the player and hides when it leaves the screen.
Either the page has no player Airlift can work with, or it loaded before the extension was allowed on this site. Reload the page.
Almost always DRM. Paid services encrypt their streams, and only an Apple TV can obtain the keys — a Samsung, LG or Sony set will sit on the loading indicator indefinitely. Airlift warns about this in the panel before you try.
Nothing can be done about it from a browser extension, and Airlift does not attempt to.
The panel has a developer section with a Copy report button. It puts a technical summary on your clipboard — what kind of player the page uses, what Airlift found, and what happened when you pressed the button. Values inside web addresses are stripped, so signed links are not included.
Paste it into an email along with the address of the page. That report answers most questions on its own.
yo.kononov@gmail.com — bug reports, sites that do not work, and questions.