[linux-dvb] HDTV performance issues

Mattias Bergsten fnord at fnord.nu
Tue Sep 4 23:58:18 CEST 2007


benco wrote:
> * CPU: Pentium 4 3.4GHz, Intel Dual Core 1.8GHz, AMD Athlon64 3800+
> 
> However there is no MPEG4 processing support in Linux kernel/NVidia driver, 
> I cannot believe that CPU's listed above are not powerfull enough for HDTV 
> playback. Well, I may also be wrong...

I've successfully watched SVT HD (Swedish HDTV test channel, 20Mbit 
H.264) on my MythTV setup, which uses an Intel Core 2 Duo E6420. Some 
tearing occurs but playback is reasonably smooth at about 90-95% CPU 
utilization.

Believe it - you're going to need at least an E6600 for completely 
smooth HDTV playback until someone either optimizes the MPEG4 codecs or 
we get GPU accelerated MPEG4 decode.

/fnord



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