[mythtvnz] Best way to reduce CPU use (by ~10%) during software encoding/decoding

[Steve Hodge]

On Mon, Feb 23, 2009 at 9:05 PM, Aaron Whitehouse
<lists at whitehouse.org.nz>wrote:

> Thank you to Steve for the resolution suggestion - that seems to have
> cut the CPU usage by enough without destroying the quality.


It worked for me so I figured it was worth a go. I read somewhere that the
horizontal resolution of SD signals is actually very low - much lower than
the 720x576 (or 704x576) that is theoretically possible.

 I am still
> quite disappointed by how much CPU decoding MPEG-2 takes - it is
> significantly more than MPEG-4, which is a much more compressed format.
>

The mpeg standards are designed with decoding requirements in mind - so
mpeg4 requires a lot more horsepower to encode and yet is just as easy to
decode (or even easier as you are seeing in your case).

Cheers,
Steve
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