Intensity Pro 720p analog capture help.
by Faris Ruhi
on
Aug 20, 2008 at 10:34:25 am
Hi,
I just got an intensity pro card recently and have been trying to capture in 720p. First of all I should mention, even though I have Adoeb Premiere CS3, the program doesn't detect the capture card, and the blackmagic intensity presets are not selectable (only the folders exist).
So I decided I was going to capture in Media Xpress, because I can see video through that. So I captured a file and found that the quality was bad, with bad aliasing issues and some interlacing artifacts which should not be there in a 720p file.
The capture display window in media xpress shows these artifacts as well.
I tried looking at the input through media player classic and the video was fine and is what I want my video to look like.
I dont have any framerate problems, my hardware is good enough for that, and Im capturing in MJPEG since I dont have a raid disk array yet. I dont think it's a codec problem because the preview display of the capture when not recording in media xpress shows exactly how my video looks after capturing.
Im connected through component cables as well.
here are my specs:
Asus P5QL-E
3 gigs of ram (really four gigs, was thinking about upgrading to 64 bit OS)
Q6600 @ 2.4 GHz (Quad core @ stock speeds)
If anyone can help, maybe even get my cs3 running with it, I'd really appreciate it.
Thank you.
Oh and here are comparison pics of non-captured versions:
Re: Intensity Pro 720p analog capture help. by Faris Ruhi on Aug 20, 2008 at 8:06:57 pm
Okay well I figured it out. I had to uninstall blackmagic and premiere. reinstalled premiere updated it, then installed intensity and now it sees it.
as for the vid problems, i think it is because of the decoder being used to display the feed in media xpress and using the mjpeg codec caused the video to have major interlacing artifacts. now I just do uncompressed encoding, and the pic quality seems perfectly fine in the output file.
so in case anyone is having the same problem, just do uncompressed encoding, in the display for media xpress you will see bad aliasing issues but it will be fine in the output file.
Re: Intensity Pro 720p analog capture help. by Callum McLay on Aug 21, 2008 at 4:59:29 pm
Hi Faris
I'm glad your back on track with everything! Premiere Pro can sometimes miss the installation of a capture card, however a trust re-install is always a good first step to fixing this.
In regard to your interlace issues you are spot on. It is quite common to see interlacing on video previews, even in Quicktime/Windows media player. Remember this is desktop preview and you are not viewing the full, uncompressed video stream that you see on your HDMI output, which is exactly why you get perfect quality on video output, as the video stream has been fully decoded.
Callum McLay
Technical Support Consultant
Blackmagic Design EMEA
Re: Intensity Pro 720p analog capture help. by Faris Ruhi on Aug 22, 2008 at 2:48:59 am
oh man, just when things were starting to look up another problem comes up.
im able to capture through premiere pro now, but for some reason it just stops capturing, it doesnt say capture stopped the preview frame just stops and the time count for the capture stops as well. the record button still has the pressed graphic.
So Im like maybe it is recording and I cant preview it, but nope. I left the capture on for two more minutes then pressed stop, checked out the capture feed and surely enough the capture had ended when the preview paused.
Im going to be editing in premiere pro which is why I need to capture in it.
Blackmagic xpress seems to give me a file which premiere cant conform and crashed right when it gets to the end, if I try to give it the sound and video seperately they are severely out of sync and the video is usually longer than the sound.
it is not a disk speed problem now either, I went out and bought 4 harddrives today and have set them up in raid zero. ran speed test and the speed of the disks was more than enough to handle 720p 8bit blackmagic files and 59.94.
can anyone help?
the premiere captures seem to be in sync when viewed in premiere or if someone could tell me how to get it in sync from the xpress captures that could work to.
