Don said:
I have a Windows 7 Pro 64 box with 16 GIG of RAM and 8 core AMD
processor and nVidia card. And the machine has lots of disk space. I
also have a Motorola DCT 6416 PVR which has both component and HDMI
outputs.
I'd like to record live HD television or recorded content to my PC. Can
it be done? If so, What video capture device might you recommend to do
this? Are any of the Hauppauge audio/video capture devices suitable for
this task? Reason I ask is that many of them are readily available.
Thanks
You want a device type which is rapidly disappearing.
Newegg even makes it hard to find on their site.
"AVerMedia AVerTV HD DVR C027 PCI-Express x1 Interface $89.99"
http://www.newegg.com/Product/Product.aspx?Item=N82E16815100049
The deal is, you can capture component (YPbPr) with one of
those. There is a dongle with coax connectors on it, which
plugs into one of the ports on the faceplate.
The device also accepts HDMI.
The United States has a law with DMCA in the name. It restricts
the capture of content. The companies making the cards and chips,
believe the law dictates that 1080i is the highest resolution
that can be captured. That means 1920x1080 cannot be captured
at full frame rate, as in progressive 1080p. Only the interleaved
1080i can be captured.
1920x1080 60Hz Progressive (illegal) =1080p60
1920x1080 60Hz Interleaves (OK) = 1080i60
1920x1080 30Hz Progressive (OK) <--- supported on second generation cards
when they figured out it was OK.
= 1080p30
For any card of this type that you purchase, you should
review a detailed list of capture modes. Do not trust them
to do the right thing! Some cards are missing important
capture options. (The menu on this page, will also offer other
"capture" products.)
http://avertv.avermedia.com/Product/ProductDetail.aspx?Id=528
* Input Signal:
o S-Video
o Composite (RCA)
o Component (YPbPr, 1080i/720p) <--- note lack of details (p30 available?)
o HDMI (1080i/720p)
o Analog Audio L/R
* Support resolution: 480i / 480p / 576i/ 576p/ 720p / 1080i (50/60 Hz)
The processing requirements on that page may be related to playback.
Let's hope they really do have a hardware compressor on the card.
A card with a compressor, should not need a powerful processor during
the capture phase.
There is a user manual. The user manual doesn't list the capture
resolutions.
http://avertv.avermedia.com/Upload/...arkCrystal_HD_Capture_Pro_MCS1.7.9_121210.pdf
I don't know what the resolution limit is on the analog component
capture inputs. Manufacturers have removed that from certain
devices, to make it harder to transfer stuff via analog. YPbPr
allows higher resolution than component or S-Video for example.
For example, the video card on my current computer, still has
the mini-DIN connector, and I could output YPbPr from there, to
another computer with one of those capture cards. Modern video
cards no long bother with the mini-DIN. I expect my video card
could put out a higher resolution, than one of those cards could
capture properly (fuzzy).
DMCA also limits things like HDCP support. If an HDMI output has
HDCP enabled (encryption), the capture card will see "snow" coming
from the HDMI input. Capture cards are not allowed to capture HDCP
properly. There are actually versions of the front end chips,
which accept HDCP keys, but it is illegal for the chip company
to sell those for usage in a capture card. It's OK to place
such chips inside the front end of a TV set, where the content
cannot be "stolen".
*******
It's particularly important, to read the reviews section for
cards like that. In some cases, they will mention a hack for
getting the card to run in a different mode. Read the Newegg
reviews, to determine what modes people could get from the card.
Also, hardware manufacturers are deceptive bastards, and
they will change the chipset used on a card at the drop of
a hat. Looking at the picture of that card, I no longer
see an Analog Devices chip on the front end. Some other
chip is being used. And this may affect any hacks the
old card had.
So that's the kind of card you want. The manufacturers
are trying to shy away from "straight capture", and you
can find a number of products that only support "streaming",
to make straight capture more difficult.
Hope you get the card you want,
Paul