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Video playback performance
#1
Hi all xbmc fansSmile

I am very impressed with the functionality in the windows port of xbmc. But I have a slight problem with the video playback performance. I know that a lot of people reports problems with hd stuff etc. and complaining about not using external codecs. I know all that but my issue is slightly different.

When I play regular avi files in sd (and hd) or dvd isos the quality of the playback is not perfect. I can see small 'hickups' in the playback, like it's not as smooth as it should be. Especially in panoramic scenes this is very annoying as the image is a little 'jerky'. It should not be a performance problem on my pc because the cpu load is around 20-25% during playback and the xbmc reports no dropped frames. The frame rate reported is also correct. I also do not think it is a sync problem as enabling/disabling vertical sync do me no good. I have tried different resolutions, fullscreen or windowed but nothing seems to help..

As i have understood the xbmc uses the 'dvdplayer' as its internal player. Does anybody else have this problem, or are there any tweaking tips for me? I did some testing using the x86 port of mplayer and then the playback quality was perfect. And no other player I use give me this problem.

Btw. my pc is a AMD Athlon X2 2800+, 3Gb ram, XP SP3, GeForce 6600

Thanx for any advice or help on this as it is the only issue keeping me from using xbmc.

Kind regards..
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#2
I have got the same problem as you fundseth. I got a computer running with a 3.00GHz Penryn dualcore, 2GB Ram and a Geforce 8600GT but still jerky picture.

When playing with PowerDVD, Win Mediaplayer, Mediaportal etc. every movie runs smoothly and nice.

Lets hope this is fixed in a stable beta soon!
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#3
I also have this issue with jerky playback og video.
HTPC: ZBOX-ID41 running OpenElec with Logitech Harmony remote.
NAS: Lian Li Cube, MSI P55-CD53, Intel I7-880, 16GB RAM, 23x 2TB WD drives @ RAID6, 500GB Samsung, Ubuntu Linux.
TV: Samsung UE75ES9005
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#4
Debug logs is (always) needed from all of you, upload to pastebin.com and port the URL to them here.
Always read the XBMC online-manual, FAQ and search the forum before posting.
Do not e-mail XBMC-Team members directly asking for support. Read/follow the forum rules.
For troubleshooting and bug reporting please make sure you read this first.
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#5
Same problem here (2,4 Penryn, ATI), once if got the time to do so, I'll look out for a movie trailer to reproduce it, and upload my log file.

Could it be a hz Issue, where incorrect framedoubling would cause a judder in the picture, when there ist a camera pan?
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#6
Could be different things. Even the used compiler for ffmpeg could have impact (good or bad Laugh )
Always read the XBMC online-manual, FAQ and search the forum before posting.
Do not e-mail XBMC-Team members directly asking for support. Read/follow the forum rules.
For troubleshooting and bug reporting please make sure you read this first.
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#7
XBMC for Windows performs very bad on my X2 4200+ also. Nvidia 8800 GT. GUI often pauses and video playback is far from smooth. GUI problem is probably due to lack of use of threads for something
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#8
I had this problem on Aeon, i just increased the video cache and they all work fine now.
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#9
Just for reference: http://forum.xbmc.org/showthread.php?tid=37056
Always read the XBMC online-manual, FAQ and search the forum before posting.
Do not e-mail XBMC-Team members directly asking for support. Read/follow the forum rules.
For troubleshooting and bug reporting please make sure you read this first.
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