Line at the top of the frame at DVinfo.net

Dave Dodds · January 10th, 2007, 07:18 PM

I've noticed recently - don't know how I didn't spot it sooner - that there's a weird line on top of the frame. It seems to be the top line of pixels... It doesn't show up on a regular TV. It is viewable in the editing software. What's up with this? Glitch? Should I call the service guys?

Thanks.

~~Dave

Boyd Ostroff · January 10th, 2007, 07:23 PM

You don't mention what kind of camera you have (this forum covers the whole PD and VX series).

I would want to confirm that the line actually exists and isn't some artifact of your software/computer/monitor setup. Look at some footage on another computer or with a professional monitor that shows the entire frame (underscan) if possible.

But beyond that, I wouldn't worry a whole lot about it, since regular TV's won't show anywhere near the first scan line. If you're editing the footage to be viewed on a computer (web, etc) it might be more of an issue, but it could be easily compensated by cropping the first line or two out of the image.

Dave Dodds · January 10th, 2007, 07:25 PM

It's a PD-170.

I don't think it's the computer. I looked at footage shot on a different camera but input with the PD-170 and it's totally fine. Is this a common thing?

Mike Rehmus · January 10th, 2007, 07:35 PM

It is normal. That is why you need to mask video that will be shown on devices that display the full image, such as LCD projectors. You would never see it on a CRT display but you will on a LCD display.

I always put a 5-10 pixel mask over images for just this reason.

Dave Dodds · January 11th, 2007, 07:31 PM

how do you do that? i'm cutting on the latest version of Premiere Pro. How can I mask the footage off?

Mike Rehmus · January 11th, 2007, 10:22 PM

I'm a Canopus user so I cannot answer the question. I can mask in Edius or in After Effects. Probably a good question for the editing forum.

January 10th, 2007, 07:18 PM	#1
Dave Dodds Major Player Join Date: Apr 2006 Location: New York Posts: 204	Line at the top of the frame I've noticed recently - don't know how I didn't spot it sooner - that there's a weird line on top of the frame. It seems to be the top line of pixels... It doesn't show up on a regular TV. It is viewable in the editing software. What's up with this? Glitch? Should I call the service guys? Thanks. ~~Dave

January 10th, 2007, 07:25 PM	#3
Dave Dodds Major Player Join Date: Apr 2006 Location: New York Posts: 204	clarification It's a PD-170. I don't think it's the computer. I looked at footage shot on a different camera but input with the PD-170 and it's totally fine. Is this a common thing?

January 10th, 2007, 07:35 PM	#4
Mike Rehmus Wrangler Join Date: May 2002 Location: Vallejo, California Posts: 4,049	It is normal. That is why you need to mask video that will be shown on devices that display the full image, such as LCD projectors. You would never see it on a CRT display but you will on a LCD display. I always put a 5-10 pixel mask over images for just this reason. __________________ Mike Rehmus Hey, I can see the carrot at the end of the tunnel!

January 11th, 2007, 10:22 PM	#6
Mike Rehmus Wrangler Join Date: May 2002 Location: Vallejo, California Posts: 4,049	I'm a Canopus user so I cannot answer the question. I can mask in Edius or in After Effects. Probably a good question for the editing forum. __________________ Mike Rehmus Hey, I can see the carrot at the end of the tunnel!

January 10th, 2007, 07:23 PM	#2
Boyd Ostroff Wrangler Join Date: Dec 2002 Location: Mays Landing, NJ Posts: 11,802	You don't mention what kind of camera you have (this forum covers the whole PD and VX series). I would want to confirm that the line actually exists and isn't some artifact of your software/computer/monitor setup. Look at some footage on another computer or with a professional monitor that shows the entire frame (underscan) if possible. But beyond that, I wouldn't worry a whole lot about it, since regular TV's won't show anywhere near the first scan line. If you're editing the footage to be viewed on a computer (web, etc) it might be more of an issue, but it could be easily compensated by cropping the first line or two out of the image.

January 11th, 2007, 07:31 PM	#5
Dave Dodds Major Player Join Date: Apr 2006 Location: New York Posts: 204	how do you do that? i'm cutting on the latest version of Premiere Pro. How can I mask the footage off?