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Horizontal Lines

Posted: Sat, 22nd May 2010, 6:13pm

Post 1 of 10

Phoenix Studio Production

Force: 925 | Joined: 10th Nov 2008 | Posts: 29

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When I render a video or an image in Vision Lab I get horizontal lines. I don't know why, they didn't used to be there before, how do i fix this?
Posted: Sat, 22nd May 2010, 6:33pm

Post 2 of 10

Axeman

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SuperUser

Generally horizontal lines indicate interlaced footage, though without seeing an example its hard to say for certain. I can almost say for certain, though, that it is just interlacing. Footage has to be interlaced to play on a television, so that's how most cameras capture it. If you are going to distribute it online, or want to just watch it on your computer, then as the final step, after you export the final project, you should create a de-interlaced version of the footage for that purpose.

Link.
Posted: Sat, 22nd May 2010, 11:19pm

Post 3 of 10

Phoenix Studio Production

Force: 925 | Joined: 10th Nov 2008 | Posts: 29

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How do you create ade-interlaced version of the footage?
Posted: Sat, 22nd May 2010, 11:22pm

Post 4 of 10

Phoenix Studio Production

Force: 925 | Joined: 10th Nov 2008 | Posts: 29

VisionLab User FXpreset Maker

Gold Member

Okay, I found a picture on my facebook, it's not the best example because the lines aren't as dramatic as they are on my computer or an a DVD disc.

http://www.facebook.com/photo.php?pid=2870078&op=1&o=global&view=global&subj=1543639376&id=1543639376
Posted: Sat, 22nd May 2010, 11:32pm

Post 5 of 10

Axeman

Force: 17995 | Joined: 20th Jan 2002 | Posts: 6124

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SuperUser

The exact steps of de-interlacing your video will depend on the software you are using, but it shouldn't be difficult to find "de-interlace" in the documentation for it. In most cases its just a setting you select in your render options though. www.100fps.com

The link you gave doesn't work.
Posted: Sun, 23rd May 2010, 2:23am

Post 6 of 10

Phoenix Studio Production

Force: 925 | Joined: 10th Nov 2008 | Posts: 29

VisionLab User FXpreset Maker

Gold Member

I see were you're going but my problem is within Vision Lab. If I render a frame as an image the horizontal lines appear, not when rendered as video.
And it happens where an effect is. So if I has a fire ball the fireball would have the lines not the video, or if i had a glow the glow and everything the effect touch, would have the lines, but only when rendered as a still image. Sometimes on video, if the area has multiple effects on it.
Posted: Sun, 23rd May 2010, 2:29am

Post 7 of 10

Axeman

Force: 17995 | Joined: 20th Jan 2002 | Posts: 6124

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SuperUser

Well, video is interlaced (generally), and still image aren't (ever). So if you are doing still image work, you should always do it in a progressive project in VisionLab, not in an interlaced project. Rendering a single field out of an interlaced project is only going to give you half the horizontal lines of resolution, as you have discovered.

So to summarize, working in a progressive project should solve the problem if its just a still image issue you are dealing with.
Posted: Sun, 23rd May 2010, 4:03am

Post 8 of 10

Phoenix Studio Production

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So how do i work in progressive?
Posted: Sun, 23rd May 2010, 5:21am

Post 9 of 10

Axeman

Force: 17995 | Joined: 20th Jan 2002 | Posts: 6124

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SuperUser

When you start a project, select progressive as the scan method. In the project settings.
Posted: Sun, 23rd May 2010, 7:02pm

Post 10 of 10

Phoenix Studio Production

Force: 925 | Joined: 10th Nov 2008 | Posts: 29

VisionLab User FXpreset Maker

Gold Member

Thanks, that solved the problem