[mythtvnz] CPU required for Freeview HD

[Barry Clearwater]

I take the point that a high def signal is getting heavily compressed,
but we *are* talking about well known compression algorithms are we not?
Should somebody be writing a more optimised piece decompression code, or
in a lower level language? (cough - assembler anybody!!??)
ITs just a 2D picture, our systems are capable of rendering 3D on the
fly...
I must be missing the point and over simplifying it somewhere.
<pride speaking>
No way should windows boxes out-compute a gnu/linux system.
</pride>

Barry
On Wed, 2008-08-20 at 11:08 +1200, Dean Pemberton wrote:
> > Is our decoder not low-level enough?
> >   
> As far as I can tell, the h.264 codec trades off transport size (ie
> bandwidth required) for being more computationally intensive when you
> decompress it.
> 
> This isn't a problem if you have hardware to assist you in the decoding
> process.
> Most set top boxes have this onboard, and there is hardware assist
> support for Windows.
> Linux on the other hand does not currently have any support to use the
> hardware assist in common graphics cards.  This means that all the h.264
> decoding must be done on the primary CPU.
> 
> 
> Dean
> 
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