You can stream videos from any iPhone, iPad, iPod touch, or Mac. You can even stream video from a Windows PC, but only through iTunes. Just make sure your device’s operating system is relatively recent (a list of the various OS requirements can be found here).

With the latest version, AirPlay 2, you can also stream audio to multiple rooms, decide which room to play it in, and pair speakers. Here’s how to stream audio using AirPlay.

Here’s how to use AirPlay to cast videos from your iPhone, your Mac, and your Windows PC.

Use AirPlay on your iPhone

These instructions are specifically for an iPhone, but the steps are similar for an iPad or an iPod touch. The biggest differences in the procedure depend on what app you’re playing video from. You’ll have to follow one of two sets of steps:

• If you see an AirPlay button — which looks like a rectangle with an arrow pointing up at the bottom — when you open up the app or a video in the app, tap on that to use AirPlay. For example, in the YouTube app for iPad, there will be an AirPlay button in the bottom right corner of the video.
• If you don’t see an AirPlay button, then you’ll need to select the app’s option for casting, sharing, or playing content on a different device, and then tap the AirPlay option. For example, in the YouTube app for iPhone, you would tap the cast button at the top of the screen (it looks like a rectangle with a Wi-Fi symbol coming out of the bottom left corner) and then tap “AirPlay & Bluetooth devices.” In Photos, tap the share button (which looks like a square with an arrow coming out of the top). Then, scroll down and tap AirPlay.
• For either type of app, tap the device you want to use AirPlay with.
• Your TV may display a code. Enter that in the box on your phone’s screen and tap OK.
• Now you’re casting your video to your TV via AirPlay.
• To stop casting, open up the AirPlay window in the same way you accessed it above (again, this will differ depending on the app) and tap “iPhone” on the list of devices. This will return your feed from the TV back to your iPhone. In Photos, you’ll have to tap the AirPlay icon in the top right corner and then “My Device.
  
  Use Airplay on your Mac
   
• Open up the video you’d like to cast to your TV.
• Click on the AirPlay button. Often (but not always) you’ll find it in the bottom right corner of the video. (We found that it was best to access YouTube through Safari rather than Chrome.)
• Select the device you’d like to cast your video to from the drop-down options.
• Your Mac may ask you for the code displayed on your TV. Enter it into the pop-up window.
• When you want to stop casting, click on the same AirPlay button you clicked on earlier to start AirPlay. Then click “Turn off AirPlay” from the drop-down menu.

Using AirPlay on your PC

You can use AirPlay on your Windows PC, but only for content on iTunes. To do that:

• Open iTunes and start playing a video.
• Click on the AirPlay button in the bottom left-hand corner of the screen.
• Select the device from which you want to watch.
• You may be prompted to enter a code. If so, enter the code on your TV into the pop-up window on your PC.
• You should now be watching your video on your TV.

Using AirPlay on your PC

You can use AirPlay on your Windows PC, but only for content on iTunes. To do that:

• Open iTunes and start playing a video.
• Click on the AirPlay button in the bottom left-hand corner of the screen.
• Select the device from which you want to watch.
• You may be prompted to enter a code. If so, enter the code on your TV into the pop-up window on your PC.
• You should now be watching your video on your TV.