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Jerethi
3rd September 2002, 22:11
I've search a good amount through the forums and I'm still rather confused as to what exactly I'm supposed to do in this case.

Most of the vobs in DVD2AVI I ever deal with come up as FILM 95% and greater, so I just use Force Film. This new batch of vobs however, come up as Interlaced. I'm stumped at this point. What are the proper settings for this?

Thanks in advance for helping out a newbie.

jggimi
3rd September 2002, 22:24
I wrote this up recently for the Newbies forum ... but it was buried in a thread and you might have missed it. You'll need to examine individual frames to determine if the content was a non-standard Telecine or if the content was shot on video.
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35mm film is 24fps. NTSC video is 29.97fps.

The process to go from 35mm film to NTSC video adds ~6 frames per second. That process is called Telecining. See www.doom9.org/synch.htm for more information. Please.

IVTC is Inverse Telecining. When done properly, it removes those 6 extra frames. The resulting video file will have a framerate of 23.976fps.

Content that displays as FILM in DVD2AVI has been Telecined. Some content that does not show as FILM might have been Telecined. One can only tell by examining individual frames of the content. The link I provided earlier will show you what Telecined content looks like.

There are 4 methods to IVTC with GKnot:

Force FILM in DVD2AVI, when the content type is FILM. The project will automatically adjust the framerate to 23.976, and eliminate the correct frames.The rest of these methods use filters which analyze individual frames. They also require manually setting the framerate, or letting Gknot catch the error and adjust it for you. Checking IVTC in the "Save & Encode" window. This will turn on the DeComb filter set, and use the Telecide and Decimate filters.
You can manually enable the GreedyHMA filter (and .dll file) by removing the "#" in front of those two lines in the .avs file produced by GKnot, converting those from comments to script commands.
Use another AviSynth filter, such as IVTC.dll.Content which has not been Telecined should not be put through any IVTC process.

If the content just needs de-interlacing (video, or a hybrid of video and film), there are 3 ways to do so with GKnot:[list=1] Use Fast Deinterlacing, which cuts the vertical resolution in half
Use Field Deinterlacing, which blends pixels to eliminate interlace artifacts
Use another AviSynth filter, such as Telecide.[/list=1]The choice between these methods will depend upon your content. You can preview to determine which looks best to you.

Jerethi
4th September 2002, 06:36
I am definitely printing this one out.

Many thanks!

--Jonathan