[mythtv-users] re: choppy HD playback

[Scott W. Edwards]

Questions for the list: Is anybody running a Myth setup with the pcHDTV
card and successfully playing back a HD (1920x1080i) stream? What CPU,
ram , MB combo are you using? I have come to the conclusion that my
Athlon XP 2500+ is not quite up the job of decoding the HD stream. It is
OK for a SD stream. Here is my TOP while watching a HD channel:

top - 20:33:34 up 2 days, 9 min,  2 users,  load average: 4.36, 1.92,
0.74

Tasks: 100 total,   2 running,  98 sleeping,   0 stopped,   0 zombie

Cpu(s): 97.1% us,  2.6% sy,  0.0% ni,  0.0% id,  0.0% wa,  0.0% hi,
0.3% si

Mem:    514048k total,   510396k used,     3652k free,    16760k buffers

Swap:  1959920k total,        0k used,  1959920k free,   255240k cached

 

My hard drive is using dma, and I have tried compiling Myth with  XvMC
support (hdtv patches applied) but this actually makes the problem
worse.

 

I am considering 2 options: One is to drop in a Athlon XP3200+ with the
400Mhz FSB, or two, is to go with a P4 3.0Ghz. This would require a new
MB and a complete rebuild of Gentoo and lots more money. Any advice
would be appreciated.

 

Thanks,

 

Scott

 

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