Interlace or Non-Interlace

[Maverlck32]

I've searched the forum for the difference and have found a lot of information about Interlacing. I still haven't found anything about how to tell what your source is though if you don't know how it was recorded. Is there a program that you can open the file in that will show you if it's Interlace or Non-Interlace (Progressive) or is there another was to tell?

[Morloc]

When you play the VOBs in DVD2AVI, the info pane tells you whether it's progressive or interlaced.

Morloc

[Maverlck32]

Thanks, I'll use that for when I rip my dvds but I already have an .avi file and don't have the dvd to rip the .vobs again. Is there any way to view Interlace or Non-Interlace without having the vobs?

[Morloc]

Maybe IFOEdit, but I don't have it on my PC any more, so I can't check. Sorry.

Morloc

[Beavis]

If you can view the file frame by frame, look at the edges of moving objects for interlacing artifacts (sort of a comb effect). If you see them, it's interlaced (or telecined). You don't need some sort of program (if it even exists in the first place) to tell you if you understand what it is and what you're looking for. See http://www.lukesvideo.com/ for an excellent description.

[dphirschler]

I don't know PAL, but if we are talking NTSC, you can try the following:

1. Use some common sence. If the video is from a live event or home movies, then it is interlaced video. If it is an animated cartoon or other kind of stop motion animation or a theatrical movie, then it is film-based. I am not sure about soap operas, sit-coms, and music videos, but logic tells me it is video, since you have to develop film. But I am sure there are exceptions.

2. You can double-check your initial suspicions by viewing the avi frame by frame. Find an interlaced frame and advance forward frame at a time. I count to myself "1,2,345". '345' should be full frames, 1 and 2 should be interlaced. If you see that, then it is film-based and telecined to be viewed on your TV.


Darryl

[D_Knife]

this is always an interesting read

www.100fps.com