Blackmagic Intensity card and 24f footage? at DVinfo.net

Go Back   DV Info Net > High Definition Video Acquisition > General HD (720 / 1080) Acquisition

General HD (720 / 1080) Acquisition
Topics about HD production.


Reply
 
Thread Tools Search this Thread
Old November 16th, 2007, 06:39 PM   #1
Wrangler
 
Join Date: Apr 2003
Location: Philadelphia, PA
Posts: 2,898
Blackmagic Intensity card and 24f footage?

Looking for a way to monitor my HDV footage for color-grading in post. I'm thinking about picking up the Blackmagic Intensity card for this purpose but don't see anything in the literature that says it'll support 1080p. I shoot with XH-A1s primarily in 24f mode.

Will the Blackmagic Intensity card have any problems outputting this to external monitor? Thanks in advance!
__________________
Glen Elliott
Cord 3 Films
Glen Elliott is offline   Reply With Quote
Old November 18th, 2007, 04:12 PM   #2
Wrangler
 
Join Date: Apr 2003
Location: Philadelphia, PA
Posts: 2,898
Bump, to see if anyone might know. Thanks.
__________________
Glen Elliott
Cord 3 Films
Glen Elliott is offline   Reply With Quote
Old December 18th, 2007, 01:49 AM   #3
Regular Crew
 
Join Date: Dec 2007
Location: Columbus, OH
Posts: 80
Did you find out yet?

Glen,
I have a black magic card on the way and was wondering if you were using one to view the 24f footage externally? Thanks
Nathan Nazeck is offline   Reply With Quote
Old December 18th, 2007, 11:01 AM   #4
Wrangler
 
Join Date: Apr 2003
Location: Philadelphia, PA
Posts: 2,898
Yeah, I took a chance and picked it up. Unfortunately it seems no one on here knew the answer to my question. Thankfully it does indeed work. It doesn't have a 24f/p preset but it still sends the signal. Im using a 40" Samsung T-series 1080p LCD to proof my colors, i love it! I calibrated it using blue gel THX glasses.
__________________
Glen Elliott
Cord 3 Films
Glen Elliott is offline   Reply With Quote
Old December 20th, 2007, 11:30 PM   #5
Regular Crew
 
Join Date: Sep 2006
Location: Australia
Posts: 41
Hi Glen,

Sorry I didn't catch this thread in time. Intensity does not actually support 24p. What it is doing is applying pulldown to the output to your TV so that you're monitoring 1080i59.94 in real time.
__________________
Blackmagic Design
Kristian Lam is offline   Reply With Quote
Old December 21st, 2007, 12:45 AM   #6
Wrangler
 
Join Date: Apr 2003
Location: Philadelphia, PA
Posts: 2,898
Hey Kristian, thanks for chiming in. I don't know that 24"f" footage really even needs "pull-down" per say. Any insight into that? Granted the most important thing is that it works, which I'm grateful. I just wish I knew more about the ins and outs of both the footage format and how the hardware works.
__________________
Glen Elliott
Cord 3 Films
Glen Elliott is offline   Reply With Quote
Old December 21st, 2007, 11:50 AM   #7
Trustee
 
Join Date: Dec 2003
Location: Houma, La.
Posts: 1,400
Images: 5
Glen,
I'm no expert, but I think that you're part right, the 24f doesn't need pulldown to play properly on your computer, but it must be put back into a 29.97 stream to play out of the card to your monitor. This a limitation of the card, and not your monitor or the camera itself.
I don't think you'll know the difference watching it on your external monitor. It should "look" 24p to you.

Any official Blackmagic people wanna chime in and correct me... feel free. I'm a hack.

***EDIT***
Looks like it's a 59.94 stream... but you get the point.
__________________

-Ethan Cooper
Ethan Cooper is offline   Reply With Quote
Old December 21st, 2007, 12:04 PM   #8
Major Player
 
Join Date: Jul 2006
Location: New Mexico
Posts: 566
Hi Glen,

Just came across this thread, and am curious about the cards myself.

I am wanting to run the same setup as you (minus the very cool 40" lcd screen!), XHA1 in 24f, with the Intensity card.

What NLE are you running it all on? (We have Adobe CS2 at the moment.)

Thanks,

--JA
www.madjavaproductions.com
Jeff Anselmo is offline   Reply With Quote
Old January 6th, 2008, 01:05 AM   #9
Regular Crew
 
Join Date: May 2007
Location: Woodland Hills, CA
Posts: 62
I have the Intensity card, and captured from an HV20 set to 24P. I then did a 3:2 pulldown using After Effects, and the video looks amazing on playback.

My problem is that it is out of sync in Premiere CS3 (project is set to 24P), but the video is in sync when played back in windows media player.

Any thoughts?

-S
__________________
When you get to the end of your rope, you either hang or hang on.
Sterling Youngman is offline   Reply With Quote
Old January 7th, 2008, 11:04 PM   #10
Regular Crew
 
Join Date: Sep 2006
Location: Australia
Posts: 41
Quote:
Originally Posted by Ethan Cooper View Post
Glen,
I'm no expert, but I think that you're part right, the 24f doesn't need pulldown to play properly on your computer, but it must be put back into a 29.97 stream to play out of the card to your monitor. This a limitation of the card, and not your monitor or the camera itself.
I don't think you'll know the difference watching it on your external monitor. It should "look" 24p to you.

Any official Blackmagic people wanna chime in and correct me... feel free. I'm a hack.

***EDIT***
Looks like it's a 59.94 stream... but you get the point.
Yes, to play back 24p on the computer, you don't really need pulldown. The computer does not care what the frame rate is. However, in order to send it out to a hdtv or some kind of monitoring display, this will matter. You'll find that a lot of displays do not support 1080p24. For example, the professional Sony BVM CRTs will play 24p as 48i as the refresh rate for 24 is too low. As such, the Intensity card will apply pull down to the video output stream in real time such that it will work with most displays used. It does not change the original 24p nature of your clip.
__________________
Blackmagic Design
Kristian Lam is offline   Reply With Quote
Old January 7th, 2008, 11:06 PM   #11
Regular Crew
 
Join Date: Sep 2006
Location: Australia
Posts: 41
Quote:
Originally Posted by Sterling Youngman View Post
I have the Intensity card, and captured from an HV20 set to 24P. I then did a 3:2 pulldown using After Effects, and the video looks amazing on playback.

My problem is that it is out of sync in Premiere CS3 (project is set to 24P), but the video is in sync when played back in windows media player.

Any thoughts?

-S
What do you mean by out of sync? Are you referring to audio/video sync? If so, are you monitoring audio and video from the Intensity card?
__________________
Blackmagic Design
Kristian Lam is offline   Reply With Quote
Old January 7th, 2008, 11:14 PM   #12
Regular Crew
 
Join Date: May 2007
Location: Woodland Hills, CA
Posts: 62
I am not trying to monitor through the Intensity card.

I am simply watching the video on my computer screen and the audio is out of sync with the video, when played back in Premiere.

Yes, the audio does come out of the blackmagic multibridge, which I have on my editing system. Capturing is on a different computer. Again, it's in sync with this hardware configuration, when viewed with windows media player.

-Sterling
__________________
When you get to the end of your rope, you either hang or hang on.
Sterling Youngman is offline   Reply With Quote
Old February 11th, 2008, 01:55 AM   #13
Trustee
 
Join Date: Mar 2007
Location: Sherman Oaks, CA
Posts: 1,259
Quote:
Originally Posted by Kristian Lam View Post
Yes, to play back 24p on the computer, you don't really need pulldown. The computer does not care what the frame rate is. However, in order to send it out to a hdtv or some kind of monitoring display, this will matter. You'll find that a lot of displays do not support 1080p24. For example, the professional Sony BVM CRTs will play 24p as 48i as the refresh rate for 24 is too low. As such, the Intensity card will apply pull down to the video output stream in real time such that it will work with most displays used. It does not change the original 24p nature of your clip.
Kristian, two follow-up ?'s:

So are you saying that the pulldown is being added by the Intensity card and not by the camcorder? I have an HV-20 and thought that the camcorder added the pulldown to 24P going out of the HDMI port.

Are there plans for a laptop compatible version of Intensity?

Thanks much!
Peter Moretti is offline   Reply With Quote
Old February 11th, 2008, 01:20 PM   #14
Major Player
 
Join Date: Jan 2007
Location: Boston, Massachusetts
Posts: 380
Images: 1
I was planning to get this card for monitoring HDV and XDCAM footage. For those that have used it, can you use any timeline codec, for instance can I edit XDCAM EX in its native codec and just let the BM card send a component or HDMI output or do you have to use some BM specific codec?

Thanks,
BE
Benjamin Eckstein is offline   Reply With Quote
Old March 11th, 2008, 11:14 PM   #15
Regular Crew
 
Join Date: Apr 2007
Location: Madison, WI
Posts: 39
any update on this?
I am using this setup with FCP 6.0.2 and I can't get it to output to the Intensity card. There is a signal going out because when I switch the card to something like NTSC DV out, it sends a crappy signal to the monitor that doesn't update in real time. So the connection is there.
I got it to work once, but FCP was having problems at that point that required a fresh install and a firmware update to the video card. Since then, no luck.

What settings are you using?
Nate Clarke is offline   Reply
Reply

DV Info Net refers all where-to-buy and where-to-rent questions exclusively to these trusted full line dealers and rental houses...

Professional Video
(800) 833-4801
Portland, OR

B&H Photo Video
(866) 521-7381
New York, NY

Z.G.C.
(973) 335-4460
Mountain Lakes, NJ

Abel Cine Tech
(888) 700-4416
N.Y. NY & L.A. CA

Precision Camera
(800) 677-1023
Austin, TX

DV Info Net also encourages you to support local businesses and buy from an authorized dealer in your neighborhood.
  You are here: DV Info Net > High Definition Video Acquisition > General HD (720 / 1080) Acquisition

Thread Tools Search this Thread
Search this Thread:

Advanced Search

 



Google
 

All times are GMT -6. The time now is 12:41 PM.


DV Info Net -- Real Names, Real People, Real Info!
1998-2017 The Digital Video Information Network