Hello. I am having some playback issues on my Mac Pro running high def 1080p files that I RIPPED into .mkv format when playing through my Sony Bravia KDL-40S4100. (while playing any other move that is @ 720p/576p there is no chopyness)

This issue has been apparent through my upgrade from 10.5.9/10/11 -> 10.6.1

I am playing files through VLC 1.0.2

I connect my Mac Pro (2.66 Xeon x2 / 5.5TB / 4GB / NVIDIA GFORCE 7300 GT 256MB) via my second video port (I unplug my 24 inch dell LCD) and run it to my SONY TV via DVI -> HDMI -> extension adapter -> 50ft HDMI cable -> HDMI port on TV. (this problem occurred prior to my new media center set up when the cable was a 12ft DVI -> HDMI, so I know length is not the culprit.

When I watch the video locally on my Dell monitor the video playback glitches arent apparent. But when I play through the Sony the video get choppy and unwatchable, after a while.

After the monthes of troubleshooting I have decided the bitrate of file size / quality of the 1080 rips are to much for my (in my eyes) very powerful mac pro. The only peice I can upgrade to specs that are enough is the video card? Are my assumptions wrong, Is there something else im missing?

Sometimes VLC isn't the best player, so before you do too much more troubleshooting, simply try playing those same files back with Plex (head over to their forum for a couple of little tricks) or MPlayer OSX Extended (with multithreading turned on.)

VLC is a great app for a lot of things.

But, for playback of 1080p mkv's on macs, it really isn't.

chefkic has sent you to the right place...