PDA

View Full Version : 720p and 1080p video


trobrock
May 4th, 2009, 10:29 PM
Whe I try to play 720 and especially 1080p video on mythbuntu in boxee is seems like the video has a rough time rendering in time to play it will slow down for a little bit then quickly catch back up, what is the best way to fix this? Is the video processing being limited more by the CPU or the GPU? I am running an AMD Athlon 64 X2 5400+ and an nVidia PCI-E GeForce 8500 GT with 2GB of system memory.

Also on a side note since I setup boxee to run from the Mythbuntu menu it seems to randomly crash occasionally any ideas why this is?
marcel
May 5th, 2009, 06:51 AM
what file formats are these? are you trying to play them locally or over smb?
trobrock
May 5th, 2009, 08:31 AM
It is an mkv file playing from the local SATA drive
dc2447
May 5th, 2009, 01:52 PM
Whe I try to play 720 and especially 1080p video on mythbuntu in boxee is seems like the video has a rough time rendering in time to play it will slow down for a little bit then quickly catch back up, what is the best way to fix this? Is the video processing being limited more by the CPU or the GPU? I am running an AMD Athlon 64 X2 5400+ and an nVidia PCI-E GeForce 8500 GT with 2GB of system memory.CPU, xbmc doesn't use hardware acceleration on the video card afaik
Apek
May 5th, 2009, 04:06 PM
CPU, xbmc doesn't use hardware acceleration on the video card afaik

It does if your card is supported by VDPAU

No idea about Boxee
bootrom
May 5th, 2009, 09:52 PM
i have a ubuntu 9.04 + boxee mediabox hooked up to my tv. I can playback 1080p easily with no tearing or framedropping with an e5200 and 7300gt nvidia card with 1gb of ddr2.

The bottleneck is definitely the cpu.. i had a lower spec cpu which struggled to playback 720p so upgraded only the cpu to the e5200 and now max cpu usage is around 70% roughly while playing 1080p over smb.
sfsmiley
May 6th, 2009, 04:40 PM
the GPU? I am running an AMD Athlon 64 X2 5400+

what ghz cpu are you using? your going to need at least a 2.4 dual core at minimum to get decent results. I have a 3.2ghz AMD x2, and it still struggles sometimes with mkv files that are encoded at high bitrates. video card is irrelevant unless your using vdpau, but I doubt thats the case?
BennyWhatever
May 6th, 2009, 10:20 PM
I had a similar problem earlier. When I played files that were too high of resolution, it went REALLY fast, then REALLY slow. Turned out it was an audio problem. I had to get rid of PulseAudio completely, and then it worked!