Solved Very poor performance with 1080p h264 video
#1
I bought an Acer Aspire One 725, with Dual Core AMD C-60 CPU, Radeon HD 6290, and 4 GB of RAM.

By checking the specs of the GPU (UVD3), it seemed reasonable that it should be able to handle all videos, including 1080p h264.
The system requirements for XBMC say that Radeon 5xxx and above are recommended.

In Windows, the netbook has no problems playing HD videos from this website:
http://www.auby.no/files/video_tests/
Particularly, monsters and birds.

So I downloaded the http://mirrors.xbmc.org/releases/XBMCbun...el-AMD.iso and put it on a USB stick.
The netbook boots into XBMC without problems, and I can play all DivX/xvid SD videos (DVD rips) with no problems.

The playback for 720p h264 is barely acceptable.

The playback for 1080p h264 is a slideshow.

If I press "o". I see three CPU's: dcpu, acpu, and vcpu.
vcpu is at 99% the others are below 10%

Checking top, the CPU usage is about 115% (so I am assuming it's running single-threaded).

I am not sure what to do now? What is the problem? Is the Radeon Driver that bad in Linux?

Would an ION-based laptop work better (e.g. HP Mini 311)?
Should I byte the bullet and use XBMC in Windows? (I really don't want to do this for other technical and personal reasons)

Did anyone ever succeed in playing 1080p h264 videos using XBMC and an Radeon HD 62xx GPU?

PS, the 1080p video in question runs flawlessly on Raspberry PI (openelec), and my desktop (Intel i5 750, Radeon HD 5770, Ubuntu 10.04)
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#2
http://forum.xbmc.org/showthread.php?t=116996

not 100% sure if you need standard fglrx or the embedded version. Try with default first.
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#3
Welcome there.

I guess you missed all of the 2 million threads (I exaggerate by about 1 million give or take) that say you need xvba branch and all the how-tos and the wiki Frodo_FAQ (wiki).

see http://forum.xbmc.org/showthread.php?tid...pid1326341

Follow it (ontop of your XBMCbuntu install) and should work just fine.

Go ahead and mark this thread as solved too Wink

uNi
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#4
Hey, thanks for the replies and for pointing me in the right direction.

I will follow your suggestions as soon as I get home.

If I do not have to buy another netbook, I will definitely mark this as solved.

Thanks.

EDIT:

Thanks, this post helped:
http://forum.xbmc.org/showthread.php?tid...pid1326509

particularly:

Code:
sudo add-apt-repository -r ppa:team-xbmc/ppa  
sudo add-apt-repository ppa:wsnipex/xbmc-xvba
sudo apt-get remove xbmc xbmc-bin
sudo apt-get update
sudo apt-get upgrade
sudo apt-get install xbmc xbmc-bin
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Very poor performance with 1080p h264 video0