[mythtv-users] Performance of the HD MPEG2 decoders

[Robert Tsai]

On Thu, Nov 17, 2005 at 03:43:52PM -0800, Todd Ignasiak wrote:
> I have seen several reports of performance expectations with the
> various MPEG decoders, and what I am seeing is not exactly what
> other people have seen, so I wanted to start a discussion here.
> Also, I thought others might be interested in the performance
> numbers from a typical system (if anyone has performance info from
> other CPUs, or Unichrome XvMC, please post)..
> 
> The main unexpected issues I see are:
> - libMPEG2 uses much more CPU than the Standard decoder on my system. 
> (libmpeg2:80%, Standard: 50%, XvMC: 28%).   The 'help' info in the
> GUI, and several posts here, say that libMPEG2 should be have lower
> CPU requirements.    Perhaps this is an x86-64 issue.

You're confirming what other people have reported on other 64-bit
systems (ffmpeg a.k.a. "standard" is more CPU-efficient):

	http://www.gossamer-threads.com/lists/mythtv/users/127168

--Rob
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