[dteirney]

Playback for me is ridiculously slow for some content with lots of frames getting dropped. Weird thing is I get worse playback for some PAL Xvid content than for 720p H264.

720p H264 with Big Buck Bunny plays back pretty damn smooth with CPUs at ~30%/30%. This is in a .mov container. A few dropped frames.

720p H264 from recorded DVB-T content plays back reasonably with CPUs at ~60%/30%. This is in an .mpg container. More dropped frames than Big Buck Bunny.

1080i H264 (with PAFF interlacing) from recorded DVB-T content plays back choppy with CPUs at ~100%/65%. In an .mpg container. Huge number of dropped frames. FPS only ~19.

PAL 720x576 Xvid rip (MPEG4) has one CPU pegged at 100% with the other at ~10%. This is in an AVI container. Lots of dropped frames. This was silky smooth on the original XBox!

1080p H264 Killa Sample has one CPU pegged at 100% with other at ~20%. In an MKV container. Not too many dropped frames but playback is pretty choppy at only ~19FPS.

I'm running an ATI video system, but I'm not sure how much affect that has on playback. Similarly running AMD CPU and I don't know what impact that has. Many people suggest using Intel, but I had to find a mATX board with 2 PCI slots and DVI/HDMI out and there was bugger all choice with that requirement.

I can't believe the original XBox is whomping the 3.0Ghz CPU and 10 years newer GPU for playback of Xvid rips of PAL content.

HD 3200 / 780G graphics
AMD X2 6000+ (3.0Ghz)
2Gb RAM
ATI Catalyst 8.12 drivers
skiploopfilter set to 48 in advancedsettings.xml
VSync turned all the way on with Catalyst Control Center
VSync decided by driver in XBMC
Running SVN version of XBMC from 09-Jan.
My xorg.conf is pretty standard at the moment.

The code changes for number of threads doesn't seemed to have improved much.