Telling what kind of interlacing it is

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Telling what kind of interlacing it is

Postby TheOneFreeman » Thu Aug 03, 2006 4:24 pm

How can you tell what kind of interlacing a video is?

I'm trying to tell if my video is:

:Pure Interlacing
:Telecline and Pulldown Material
:Hybrid Sources
:Full Field Blended Sources
:Partial Field Blended Source

I'm not too sure how to tell the difference and how to identify each one, can someone help me?
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Postby Zarxrax » Thu Aug 03, 2006 8:26 pm

What is the source?

Usually, just handling it like Telecine material is sufficient.

As for how to tell which is which, I think the guide is fairly straightforward there (although it can be a bit lengthy). What are you having trouble understanding?
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Postby TheOneFreeman » Thu Aug 03, 2006 8:47 pm

it gives a description of them (the source is DVD turned into .vob, then turned into an .avs
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Postby TheOneFreeman » Thu Aug 03, 2006 8:48 pm

Sorry for the double post, isn't there a way to edit...

I can't tell the difference between each one, how am I supposed to know which is which
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Postby Willen » Thu Aug 03, 2006 9:20 pm

You'll need to look at the source material frame by frame (or field by field) to really know for sure.

For Pure Interlaced material, and Telecined/Pulldown Material, you can look at the individual frames and count duplicate fields/frames.

Pure Interlaced Material is rare for anime (except for mainly CGI portions; see Hybrid Sources), but the telltale sign is unique individual fields (as opposed to frames).

Telecined/Pulldown Material is easy to see, it will have a 2-3-2-3 pattern. Since this is a result of converting film to video, it is mainly feature films that have a 24fps framerate that utilize this fully. But since anime (especially older hand-drawn series) are generally done with cel animation, even at the lower framrates used for TV, most anime respond well to IVTC (inverse telecine).

Hybrid Sources are appearing more and more frequently nowadays. The majority of the episode is animated with cels (Telecine/Pulldown) and certain parts are CGI (Pure Interlaced). Again, you will have to look at the footage to determine this. A giveaway is a scene of unusually fluid movement (especially if it looks like it was computer animated).

Full Field Blended Sources are usually a found on PAL/SECAM DVDs that are made from 29.97fps and converted to 25fps. If you aren't using PAL/SECAM DVDs, I wouldn't worry about this. The key is detecting this type of footage is that almost all the frames have blending (2 or more fields/frames mixed together).

Partial Field Blended Sources I've found are more prevalent in older anime where the telecine method blended fields together to achieve a smoother look to movement. EADFAG has some images that show examples of what this type of material looks like. Again, you need to look at the fooage to figure out if it is PFBS.

What I usually do is try to use Decomb or TIVTC first, look at the footage and see if there is still significant interlacing. If so, then I switch to a plain deinterlacer like KernelDeint or TDeint.
Having trouble playing back videos? I recommend: Image
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Postby TheOneFreeman » Fri Aug 04, 2006 10:52 am

So then Naruto would most likely be Hybrid, correct?
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