Since the Server and iOS 8 update I've lost a lot of playback functionality when sending video to my AppleTV (ver. 2)
When I fast forward or rewind I no longer get a video preview. The screen just goes black.
Slow-motion in either direction doesn't work at all.
I've tested this with mp4 videos. Some had been converted using the Air Video converter. Neither worked correctly.
I also checked to see if videos loaded in iTunes played back correctly through the AppleTV "Computers" section. They did.
I also rebooted my iPad and the AppleTV. It still doesn't play back correctly.