[mythtv-users] HDMI capture card with linux drivers

[Nick Rout]

On Fri, Apr 16, 2010 at 12:49 PM, Kevin Ross <kevin at familyross.net> wrote:
> Nick Rout wrote:
>> On Fri, Apr 16, 2010 at 12:07 PM, Raymond Wagner <raymond at wagnerrp.com>
>> wrote:
>> > On 4/15/2010 16:44, Yeechang Lee wrote:
>> >>
>> >> Raymond Wagner<raymond at wagnerrp.com>  says:
>> >>
>> >>>
>> >>> Their software provides realtime compression to mjpeg.
>> >>>
>> >>
>> >>  . . . which immediately makes the device a nonstarter unless and
>> >> until Nvidia sees fit to add MJPEG support to VDPAU. There's a
>> reason
>> >> the PVR Companion, whose makers also planned to incorporate MJPEG
>> >> encoding into, never made it to the market.
>> >>
>> >
>> > Their software... meaning it has nothing to do with the hardware or
>> the
>> > drivers.  Besides which, I don't see how VDPAU factors into any of
>> this.
>> >  We're talking about difficulty in recording, while VDPAU exists for
>> > playback only.
>>
>> And I think Yeechang meant that even if you can usefully record this
>> device's HD MJPEG stream, unless you have some hardware assistance
>> from the likes of vdpau, it's going to be a difficult task to get it
>> onto your screen.
>
> Actually if it's the software doing the MJPEG compression, that implies that
> the output from the device is uncompressed video.  That would mean the only
> problem you would have is finding enough hard drive space to put it, and
> drives fast enough to keep up with real-time writing and reading
> simultaneously.  The CPU wouldn't be the bottleneck, nor would the PCIe bus
> or the video card.

Or find a hardware h264 encoder?

Are there any for linux?

>
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