AVS › AVS Forum › Video Components › Home Theater Computers › Blackmagic Intensity HDMI Capture Problem
New Posts  All Forums:Forum Nav:

Blackmagic Intensity HDMI Capture Problem

post #1 of 21
12/26/06 at 8:30am
Thread Starter 
Being the guinea pig again, I picked up one of these. I am able to capture HDMI signal from my cable box, but the recording has a green tint to it. I am going through an active DVI splitter/amp and then into the card. I am capturing in Adobe Premiere Pro 2.0. On the other hand, if I connect a Sony HDR-HC3 camcorder directly to the card, it records perfectly. It is not the the splitter, because I can monitor the video out of its second output on my screen and it is fine. The only thing that I can think of is that the card can only capture digital YUV and the incoming signal is Digital RGB. If that is the problem, is there a device that can force a YUV color space? Or is there another windows video editing program that can work with this card? The chip on the card should be compatible with both RGB and YUV.

Intensity HDMI
Analog Devices

Regards,
Chris
LL
Reply
Reply

AVS Top Picks

post #2 of 21
12/26/06 at 9:29am
Quote:
Originally Posted by krassyg View Post

The only thing that I can think of is that the card can only capture digital YUV and the incoming signal is Digital RGB. If that is the problem, is there a device that can force a YUV color space? Or is there another windows video editing program that can work with this card? The chip on the card should be compatible with both RGB and YUV.

You've apparently answered your own question. It says right on the product page it only supports HDMI YUV 4:2:2
Reply
Reply
post #3 of 21
12/26/06 at 12:05pm
Thread Starter 
Is there a DVI or HDMI repeater or converter that can convert Digital RGB to Digital YUV?
Reply
Reply
post #4 of 21
12/26/06 at 5:59pm
You can do it in software it seems: http://www.fourcc.org/fccyvrgb.php
Reply
Reply
post #5 of 21
12/26/06 at 7:44pm
I read somewhere that HDMI compliant devices are required to be able to handle both YCbCr and RGB. I also read that some converting devices that deal with HDMI can only handle RGB. If you are using DVI at any stage, that might be the cause of your issues.
Reply
Reply
post #6 of 21
12/26/06 at 11:54pm
Sorry for hijacking this thread, but does that card record stuff flagged as 'Record Once'?
Reply
Reply
post #7 of 21
12/27/06 at 2:06pm
Thread Starter 
It is not hdcp compliant, the cable box(SA8300HD) shuts off the HDMI output. You have to go through the abovementioned DVI amp that takes care of that. Any ideas if there is an external device that will convert the Digital RGB output of the DVI amp to YUV? If not, any programs that can fix the recorded YUV files?
Reply
Reply
post #8 of 21
12/27/06 at 8:14pm
You need to be able change the colorspace flag of a video.

I found a bunch of sotware to convert from RGB to YUV and YUV to RGB, but nothing that can just change the flag without changing the video.
Reply
Reply
post #9 of 21
3/14/07 at 2:24pm
Thread Starter 
The latest drivers(1.2) and firmware fixed all issues. I just recorded a 5 min uncompressed clip and the size came out at 15 GIGABYTES! I think I will stick with JPEG HD for now, even though I am running a 15 drive 7.5TB Areca RAID 5.
Reply
Reply
post #10 of 21
3/14/07 at 4:52pm
Yes!!!! I will be getting one very soon!
Reply
Reply
post #11 of 21
3/14/07 at 5:04pm
will this capture the sound from the broadcasts as well? It looks like it will only do 2.0 channel so it is no good for 5.1 sat broadcasts.
Reply
Reply
post #12 of 21
3/15/07 at 6:10am
Can the OP post a frame of the video he has grabbed using his card?

If the Card is YCrCb 4:2:2 only and it is being fed RGB 4:4:4 - then what it is recording goodness only knows. Is it chucking away half of the R and B information with no filtering (horrible result) - is it really recording 4:4:4 but thinking it is YCrCb rather than RGB?

If the image is bright green then that sounds like an R and Y swap.

However if the image has a green cast - but the colours are otherwise recognisable - there could be a 601 vs 709 colourspace issue - as the YCrCb to RGB conversion matrices for the two standards are different (709 derives more luma from green than 601)
Reply
Reply
post #13 of 21
3/15/07 at 12:46pm
Quote:
Originally Posted by sneals2000 View Post

Can the OP post a frame of the video he has grabbed using his card?

If the Card is YCrCb 4:2:2 only and it is being fed RGB 4:4:4 - then what it is recording goodness only knows. Is it chucking away half of the R and B information with no filtering (horrible result) - is it really recording 4:4:4 but thinking it is YCrCb rather than RGB?

If the image is bright green then that sounds like an R and Y swap.

However if the image has a green cast - but the colours are otherwise recognisable - there could be a 601 vs 709 colourspace issue - as the YCrCb to RGB conversion matrices for the two standards are different (709 derives more luma from green than 601)

The hardware isn't 4:2:2; it was previously just being limited to such subsampling. Evidently this has been rectified -- see:
Quote:
Originally Posted by krassyg View Post

The latest drivers(1.2) and firmware fixed all issues.

In any regard, the 7th post in this thread provides a link to a former sample.

Too many identical concurrent discussions on this board I tell you
Reply
Reply
post #14 of 21
3/16/07 at 3:11pm
Quote:
Originally Posted by wildchild22 View Post

will this capture the sound from the broadcasts as well? It looks like it will only do 2.0 channel so it is no good for 5.1 sat broadcasts.

I second this question
Reply
Reply
post #15 of 21
4/5/07 at 10:49am
never got any status on the audio capture
Reply
Reply
post #16 of 21
12/2/07 at 2:44pm
I haven't been able to figure out 5.1 yet but I'm trying to figure out how over with krassyg in PM. It seems he and others extract the from inside the PCM stream (wav) with besplit but when I try it it stops "extracting" after like 200ms.
Reply
Reply
post #17 of 21
2/16/08 at 4:05pm
Any new news on this card? I just discovered it and it sounds very interesting.
Reply
Reply
post #18 of 21
2/16/08 at 10:40pm
Has anyone else tried this card? Seems like this is the perfect capture card if it does indeed record hd signals from the set top box. Can anyone confirm this?
Reply
Reply
post #19 of 21
3/1/08 at 10:34am
I am successfully uing the Intensity Pro to capture HD component from my DTV box via SageTV. I have not tried capturing via HDMI. Both 720p and 1080i captures work. My graph converts it to mpeg2 on the fly to save disk space. Even with that, it chews up a lot of storage. There are a couple of threads on it at the SageTV forum.
Reply
Reply
post #20 of 21
3/23/08 at 2:38pm
Which DTV box are you capturing from? What stations have your captured? Thank you.
Reply
Reply
post #21 of 21
3/23/08 at 8:52pm
Quote:
Originally Posted by bondja View Post

Which DTV box are you capturing from?

The H10-200. But it really doesn't matter what tuner you have as long as it has a component out.

What stations have your captured?

All of them. :-)

The downside to my setup now is that it is capturing SD channels into a HD format so that chews up a lot of disk space (about 8G/hr). But I'll be adding a second 1TB drive next week for TV recordings which should last a bit.
Reply
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Home Theater Computers

AVS Top Picks

AVS › AVS Forum › Video Components › Home Theater Computers › Blackmagic Intensity HDMI Capture Problem