[mythtv-users] [old] Re: XvMC and libmpeg2 to be dropped in 0.25

[Raymond Wagner]

On 2/8/2011 18:52, Bob Sully wrote:
> mythtv-users-request at mythtv.org wrote:
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>> | From: Brian Wood<beww at beww.org>
>> | Date: Fri, 3 Dec 2010 11:22:59 -0700
>>
>> | XvMC is an older hardware support method for mpeg2, it's pretty well
>> | been replaced by VDPAU, and decoding mpeg2 in software is not all that
>> | CPU intensive (pretty much anything over 500 Mhz. can handle it at SD
>> | resolutions).
>>
>> [Sorry for reviving this old thread.  I'm way behind.]
>>
>> As I understand it VDPAU is only supported by the nVidia proprietary
>> drivers on nVidia hardware.  I'd like something supported by open
>> source on a wide variety of hardware.  I don't exactly have a
>> candidate API: XvMC is too limited, VA API is apparently not there
>> yet, XvBA is AMD-proprietary (I think), perhaps OpenGL isn't overkill.
>>
>> Some of my Myth boxes don't use nVidia hardware (a couple of those are
>> old too -- no PCIe slot).  Of course I could stay at .24 (hey, I'm not
>> all there yet) but I want to get all my Myth boxes running at the same
>> level.  After all, Myth boxes are only supposed to talk to others that
>> have the same version.
> It has an early Intel dual-core Intel CPU, 4G of RAM,
> and an NVidia Quadro 140 video card.  While it *should* be able to do
> VDPAU, it's never been quite there (I have tried just about every tweak,
> with different VDPAU profiles (including Slim), but it stutters/hesitates,
> and eventually bogs down to the point where it's unusable).

MythTV has never been happy using VDPAU with less than 512MB of memory.  
How much have you allocated to the graphics chip?