De-Interlacing: Unstill? at DVinfo.net

Steve Wardale · September 19th, 2004, 02:10 PM

After experiementing with several de-interlacers, I've noticed that no matter good they claim they are, they all leave the footage looking "un-still". Doesn't matter if it's mounted on a tripod, or shot at 1/50th shutter-speed, there's always an activeness in the footage that is simply not present in film, no matter how much they pan, use steady cams, ect.

I'd blame digital artifacts, but movie vcds don't have this same problem that video doesn't, though admittedly using horizontal blur doesn't improve it alot. Has anyone else noticed this, and doesn't anyone know of a solution?

Kin Kwan · September 20th, 2004, 08:49 AM

By "Unstill," are you saying that there's a flicker in the video after it's deinterlaced? Can you elaborate a little more on what you mean by that?

If there is a flicker, then you're probably deinterlacing the video with the improper field order. You have to tell most deinterlacers which field comes first in the video before it deinterlaces, or a weird flicker will occur.

Bill Ravens · September 20th, 2004, 09:06 AM

If Steve is referring to combing, yes, I've noticed that no matter what de-interlace method is used, there's always some combing effects left in horizontal motion. This is, of course, not visible in NTSC monitor playback, but, very noticeable in computer monitor displays.

Steve Wardale · September 20th, 2004, 12:24 PM

Well, it's actually more of perhaps a psycological happening... it seems as though the video is alot more active than film, event hough after deinting their both the same framerate. I don't know if this has anything to do with the DOF or not, but there's certainly a cheesiness there, even at 25p.

September 19th, 2004, 02:10 PM	#1
Steve Wardale Regular Crew Join Date: Apr 2004 Location: Lincoln, UK Posts: 43	De-Interlacing: Unstill? After experiementing with several de-interlacers, I've noticed that no matter good they claim they are, they all leave the footage looking "un-still". Doesn't matter if it's mounted on a tripod, or shot at 1/50th shutter-speed, there's always an activeness in the footage that is simply not present in film, no matter how much they pan, use steady cams, ect. I'd blame digital artifacts, but movie vcds don't have this same problem that video doesn't, though admittedly using horizontal blur doesn't improve it alot. Has anyone else noticed this, and doesn't anyone know of a solution?

September 20th, 2004, 08:49 AM	#2
Kin Kwan Regular Crew Join Date: Jul 2004 Location: Plano, TX Posts: 120	By "Unstill," are you saying that there's a flicker in the video after it's deinterlaced? Can you elaborate a little more on what you mean by that? If there is a flicker, then you're probably deinterlacing the video with the improper field order. You have to tell most deinterlacers which field comes first in the video before it deinterlaces, or a weird flicker will occur.

September 20th, 2004, 09:06 AM	#3
Bill Ravens Join Date: Nov 2001 Location: santa fe, nm Posts: 3,264 Images: 10	If Steve is referring to combing, yes, I've noticed that no matter what de-interlace method is used, there's always some combing effects left in horizontal motion. This is, of course, not visible in NTSC monitor playback, but, very noticeable in computer monitor displays.

September 20th, 2004, 12:24 PM	#4
Steve Wardale Regular Crew Join Date: Apr 2004 Location: Lincoln, UK Posts: 43	Well, it's actually more of perhaps a psycological happening... it seems as though the video is alot more active than film, event hough after deinting their both the same framerate. I don't know if this has anything to do with the DOF or not, but there's certainly a cheesiness there, even at 25p.