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bobo1on1
cheapass Team-XBMC Developer
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The refreshrate detection doesn't work that well yet, there's an option to override it, but that only helps if you always use the same refreshrate.
Also some movies don't produce nice pts values, so they play strange, and fast-forwarding can produce weird effects.
This is on my todo list, it has to do with syncing the dvdclock properly, right now it's in a state where it works but I don't know why.
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Most of this technical video stuff is way over my head, but I was just wondering why the Xbox doesn't exhibit these problems? Is there something built into it that sync all the clocks?
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For those having issues with Auto Refresh Rate not appearing to do anything in linuxport, double check that the screen resolutions and refresh rates known to XBMC are what you expect them to be.
For some reason my LCD HDTV's native panel resolution (1368x720) only supports a refresh rate of 60Hz. "Overdriving" it at 1920x1080 gives the full range of resolutions (60Hz, 50Hz, 30Hz and 25Hz). 60Hz is the worst refresh rate for PAL content which is likely why we were getting jittery playback.
With playback automatically changed to 25Hz things appear to be much better.
Also confirm what resolution gets selected by default if using "Auto" for the screen resolution. With XBMC set to Auto it would default to 720p (even if the resolution in XFCE was set to 1920x1080) which also only supported 60Hz. Manually setting the resolution to 1920x1080@60Hz seems to have things working quite well.