Can I mirror video from my Mac to multiple Apple TV units?

I'd like to be able to simultaneously broadcast streaming video from my Mac to more than one Apple TV

Unfortunately that's not possible.

Two computers may be an option, it would use quite a bit of bandwidth though and they might not be exactly in sync.

What you are looking to do is essentially a commercial set up, you should think about commercial grade equipment and services to achieve it.

You can mirror video to multiple Apple TVs using AirParrot simply by opening multiple instances of AirParrot. It's quite brilliant, in fact. I am a second-year medical student, and 100% of my resources (textbooks, Evernote notebooks, lectures, etc.) are digital, stored on my 11" MBA. At any given time, I may have multiple textbooks, Evernote notebooks, internet browser, lectures in VLC, course notes in Preview, study music in iTunes, and my calendar up--all at the same time. As such, having multiple monitors is critical to my workflow, and AirParrot allows me to mirror audio and video to multiple Apple TVs in sync, just as if they were wired.

Thanks, that took care of it for us!

Very interesting xtian52, but how do you do to open multiple instances of Airparrot ? Idon't understand.

Thanks by advance.

It's simpler than you think. Just secondary-click the AirParrot icon in your Applications folder, and click Duplicate. If you have three monitors with an Apple TV for each, then you need three copies of AirParrot in your Applications folder, including the original. This works the smoothest if each Apple TV is hard-wired to an AirPort Extreme via ethernet with APE in the same room as your computer. I have my primary APE router in my theater room and use a secondary APE in my office to serve as a repeater and to supply the Apple TVs with ethernet. Caveat emptor: Using your computer to supply video to multiple monitors is quite taxing on your computer's video card, so I highly recommend using a two-fan cooling pad (e.g. iHome's IMAC-A300S or IH-A705CB) to prevent over-heating. Try it yourself, and spread the word!

This is genious. I've been looking at using Apple TV's to create a sort of multimedia control centre at my Church. I went to the apple store and enquired about using the apple tv's to this purpose and was told it was impossible. Thanks heaps, you've solved a big problem =)

Hannah

I'm doing the same for my church. Do I need the airport extreme, or can I use our existing wireless router for WiFi?

The wireless router has 3 unused Ethernet ports. Just thought I'd clarify... Thanks in advance!

Any router will work. However, for best performance, ensure that your router is at minimum 802.11n, preferably 802.11ac. Also ensure that each Apple TV is connected to the router via ethernet if at all possible, even if it requires 100 ft of ethernet cable. If you run out of ports on your router, bridge another router from the main one via ethernet to open up more ports.

I'll give this a shot once all the hardware arrives. We just decided on the switch from windows Tuesday so there is a delay. I'll post what we find out. Thanks for the help!!