I installed the brand new Synology DSM 4.2 firmware on my NAS system yesterday and tested it.
Well, what shall i say? It works perfectly on any Apple TV without any jailbreak!
I used the web application Synology VideoStation, the iPhone app and the iPad app and they all sent the MKV movies to my Apple TV with perfect video and audio output! All these applications have Airplay support and they stream the videos to the Apple TV 2 or 3. There are no sound or picture interruptions - everything runs very smoothly. So if anybody of you wants an Apple TV 3 and play MKV movies on it just get an Synology NAS with the latest firmware DSM 4.2. You don’t have to wait for the jailbreak which most probably will never arrive on this planet.
I tested yesterday with some 720p movies only. Today i will check out 1080p MKVs in 2D and 3D as well and i will report the result later on in this post.
btw: I’m not a Synology reseller or something, i’m just happy to have such a product! :)