mp4/mkv files over Airplay not working

Yesterday I updated my iPad software and Infuse app and now cannot play mkv and mp4 files over Airplay anymore. I can hear the audio but the video is not there. For a second the black screen appears and then it switches back to the Apple Tv home page. It works with avi files. Any ideas?

Thanks

Problem solved. I guess something went wrong with the Apple TV update.

Reseted and it works.