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View Full Version : ATV2 and 1080p video juddering




J@ffa
Jan 9, 2011, 06:37 PM
Hey all,

I've used mkvtools to turn a 1080p mkv (with a bitrate of around 11mbps) into an MP4. It plays on an ATV2, but it's juddering pretty much every other second. Is this a problem with 1080p content, the bitrate, or could it be something else? The same file plays fine on my laptop without any juddering…



emmgunn
Jan 9, 2011, 08:30 PM
Though some people have had success, the ATV2 specs don't support 1080p video. I think you'd get better results with a lower bit rate, but then that means re-encoding, so you might as well change the resolution to 720p.

BlackMangoTree
Jan 9, 2011, 09:28 PM
Yea, don't bother with 1080p on the Apple TV it just doesn't have the guts to play it back.

andre.abreu
Jan 11, 2011, 09:22 PM
you can see here ( http://rob.opendot.cl/index.php/useful-stuff/h264-profiles-and-levels/ ) the H264 profiles for better understanding!

the Apple TV 2g, iPad and iPhone 4 is compatible only profile 3.1!!!


I hope to help and sorry for my bad English!