[mythtv-users] Multi-Input Cards

Devin Heitmueller dheitmueller at kernellabs.com
Fri Sep 10 15:02:49 UTC 2010


On Fri, Sep 10, 2010 at 10:59 AM, Devin Heitmueller
<dheitmueller at kernellabs.com> wrote:
> On Fri, Sep 10, 2010 at 10:25 AM, mike at grounded.net <mike at grounded.net> wrote:
>> Are there any multi-input capture cards which are known to work with myth.
>> For example, say 2 to 4 ports of either/or a combination of composite, s-video or component inputs?
>> Perhaps even being able to add more than one card into a system?
>
> Hello Mike,
>
> Bear in mind that most cards that have what you would consider
> "multiple inputs" actually only have a single video decoder.  So for a
> card that has an analog tuner, s-video, and composite input, you can
> only capture on one of those at a time (this is the way the hardware
> is designed and is not specific to Linux).
>
> There aren't many cards which have multiple video decoders, as they
> are typically targeted at surveillance DVRs.  You can look at the
> HVR-2250 which has two ports, or the Hauppauge ImpactVCB, which has
> three or four composite inputs).  Both of these should work under
> Linux (although the HVR-2250 analog support is brand new and probably
> still has some issues).

Re-reading your email, you mentioned component inputs.  If you are
interested in HD component capture, your only real option at this
point is the HD-PVR.  I should probably also mention that if you're
looking for a commercial solution, the ViewCast 450e has preliminary
support and can support component SD capture on all four ports
(KernelLabs has a tree posted with the driver changes, but they
haven't gone upstream yet).

Devin

-- 
Devin J. Heitmueller - Kernel Labs
http://www.kernellabs.com


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