[mythtv-users] Playback performance [all platforms]
greg at phaze.org
Mon Jan 9 16:44:30 UTC 2006
> AFAICT, there's no processor-specific optimization in playback at all.
> So if performance is bad on PPC/Darwin, it's probably bad (compared to
> what's possible) on x86/Linux as well.
The differences is that scalling/display through XV is hardware
accelerated whereas on the PPC it's using Quicktimes ScaleMatrix which
is done in software. According to a Apple Tech I spoke with the other day
that with the right combo of OSX versions and hardware it will be done
in hardware but I didn't get any specifics on what the right combos
> Ouch, really? Not good news for the MacOS folks. I wonder what about
> the MacOS frontend is sucking so badly? I am running a
I'd bet money that a large portion of it is the scaling of the video.
If someone with a MAC wants to do research I'm sure a proper solution
could be found, if only so that other MAC frontend users will have
the info when making hardware purchases
> > So I' can't vouch for possible x86 optimization, but I'm pretty sure
> > the code could be tweaked to run faster on Darwin/PPC.
> Can you explain why you are pretty sure of that?
There is definately better ways to take advantage of the hardware which
isn't being done on the MAC.
If someone wants to send me one I'd volunteer to work on it :)
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