[mythtv-users] Inexpensive, preassembled, VDPAU-friendly frontends

Scott D. Davilla davilla at 4pi.com
Mon Dec 1 18:41:15 UTC 2008


>On Tue, Dec 2, 2008 at 4:30 AM, Scott D. Davilla <davilla at 4pi.com> wrote:
>>>I'd love to see some testing with PCI boards.  I had a system with a
>>>couple of PCI boards (nVidia Quadro NVS55); the most I could get was
>>>1280x1024 before losing acceleration - or at least before the framerate
>>>got really, really bad.  Since the performance would fall off a cliff
>>>very suddently, I suspect it was due to PCI bandwidth limitations. The
>>>system would do HD source but I'd have to show it at a reduced resolution.
>>
>>  PCI bandwidth does not come into play with VDPAU, the h.264 bitstream
>>  is being moved over PCI, not the decoded video content. The GPU
>>  handles the video decode.
>>
>>  Works like a champ using an atom 330 and PCI 8400 nvidia card.
>
>decoding what source material?

720p h.264 L4.1 levels of various profiles. bit-rate does not seem to 
matter. Given this, 1080p of L4.1 should also be fine. L5.1 levels 
need to wait for the nvidia driver to improve. Most of my 720p 
content is via HD-PVR.


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