[mythtv-users] Is this beefy machine really not enough to drive HD at 1080p?

[Scott D. Davilla]

>Video source is an mkv file.  I'm going DVI out from the video card
>to HDMI into the receiver.  For audio I'm using SPDIF optical cable.
>The file in question is a is a BluRay rip at 1080p with AC3 and x264.
>A similar file, at 720p, with DTS, or one with AC3, can play flawlessly.
>
>My mplayer command is the default: mplayer -fs -zoom -quiet -vo xv,
>but I've also been playing with various other setting, none of which
>seem to be any better.
>
>The log file spits out the following two pieces, the first is the
>mplayer info when it starts to play the file, the 2nd is the usual
>error about the system being too slow.
>

try adding "-lavdopts fast:skiploopfilter=all" to the mplayer 
command. That lets me play high bit-rate 720p H.264 using Xv on the 
AppleTV which only has a 1GHz pentium-m.