[mythtv-users] Firewire, framegrabbers, and Nvidia (was Re: Current wisdom on PVR-150/250/350/500

Michael T. Dean mtdean at thirdcontact.com
Wed Apr 19 01:59:28 UTC 2006


On 04/18/2006 09:05 PM, Brian Wood wrote:

>On Apr 18, 2006, at 7:03 PM, Michael T. Dean wrote:
>
>>On 04/18/2006 10:33 AM, Scott Doty wrote:
>>
>>>Heh...which brings us back to the concept of framegrabbers...
>>>
>>>Specifically, I've got an Nvidia EVGA 7800GTX that apparently has  
>>>the hardware
>>>for composite video capture, which is exactly what I need.  Alas,  
>>>the Nvidia
>>>binary blob doesn't support that part of the hardware
>>>
>>...
>>
>>>So the question becomes:  What's a good choice for a composite  
>>>framegrabber
>>>with good quality?
>>>
>>Framegrabber and good quality don't usually fit together well.  If the
>>manufacturer is providing a framegrabber, it's probably to try to
>>undercut encoders like PVR-x50's/500's, so quality normally suffers
>>accordingly.
>>
>>> I have a Hauppauge WinTV in my old workstation, but it's
>>>5V, and the 5V PCI slot on this new motherboard is covered by the
>>>(double-sized) Nvidia card... so I'm running mythbackend on my old
>>>workstation, and viewing on this new workstation.
>>>
>>Aren't the Hauppauge PVR-150's (and maybe PVR-500's) 3.3V capable?
>>
>Yes, but they are not "framegrabbers", they are integral encoder  
>cards, and he asked for a framegrabber, not that I know why :-)
>

And, (because I'm tired and didn't realize I hadn't typed it 
explicitly), the question I'm implicitly asking is, "Why a composite 
framegrabber?"

Mike


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