Confused about telecine, IVTC, deinterlace, telecide and decimate.

[manono]

I'm tired of trying to figure out what link actually downloads the file I'm looking for. I'm tired of waiting 45 seconds and of typing in stuff just to get at a video. Either upload to Sendspace or to MediaFire or someone else can help. Sorry.

[mizumi]

I'm sorry that website was so inconvenient. :S
I uploaded it to mediafire:
http://www.mediafire.com/?hsnmnpx9l31zged

[manono]

Anime is a special case because it's not always drawn at 24fps. Your best bet is to try and find a fast motion scene where every frame is different and then do the figuring. Anyway, just bob it and use SRestore at default settings (23.976fps for PAL, or 24fps if you prefer). The only thing the least bit unusual about that sample was that I had to set the field order in Yadif. It played jerky at default settings. That's probably because it was cut, though. The script you posted above (in green) was fine.

[mizumi]

I understand I have to look for a pattern and that since most anime's source frame rate is film, we have set Srestore(frate=23.976). I made a new sample of the PAL video (http://www.mediafire.com/download.php?nhyfk5js5g5thfa) with more movement and tried counting frames doing yadif(mode=1) or using yadif(mode=1).(frate=23.976fps) and find a pattern, but I couldn't find cycles because after each blending the number of clean frames was different :S

So I realized I still have some doubts...

May I ask you how do you find out the source frame rate more in detail, so that I can use that guideline for future blended sources and learn how to look for them by myself? If not I understand, as I've been asking so much... Just in case, below I write the doubts I have.

For example, with the PAL video:
Would you count the frame pattern just using yadif(mode=1, order=1) or using yadif(mode=1, order=1).(frate=23.976fps) or afterwards?
Imagine we didn't know most anime is 23.976/24fps... to find out the source frame rate you have to keep trying frate=23.976 / frate=25 / frate=29.97 and looking for a specific pattern?
What pattern do you look for to find out if the source frame rate is PAL, NTSC or film, or PAL converted from telecined NTSC, etc.?
Also, when you said to look for cycles (1 in 5, 1 in 6 frames) which cycle is for PAL, NTSC, ...?

Thank you for your time, Manono.

[manono]

I didn't bother downloading the sample. You're making this more difficult than it really is. Unless you plan on working with silent films (or maybe doing some VFR encodes), there just aren't all that many choices. If PAL and fieldblended, the 'base' framerate will be 23.976/24fps. If NTSC the 'base' framerate will be 24.975/25 or very rarely (like maybe 1%) 23.976fps. To detect fieldblending, separate the fields or bob the video.

If it's an NTSC video, if the source was PAL (24.975/25), you get one duplicate in six frames if you unblend to 29.97fps. If the source was film you get one dupe in five frames.

If you have any difficult sources you can't figure out, post samples here.

[mizumi]

Yeah, maybe i'm complicating it. Anyway, thank you for your answers!

[Amateur]

rehashing an old thread but I'm confused again (i need to take a course on this stuff it seems like). Here (http://www.mediafire.com/?zys2uc3hs823tzq) is a sample of the source. The first three discs was determined to be field-blended PAL dvd. I'm now on the fourth and fifth discs of the set which is the second season of the series but it appears to be progressive now. When I enter info() into the script it tells me that it's 25fps, field based = no, parity = top field first. "field based = no" makes me think it's progressive but i don't quite understand all of this fully.

any help on how to get this to 24fps progressive or do I even need to do that?

[manono]

Looks progressive 25fps to me. You shouldn't have to do anything with it as far as using SRestore or changing the framerate. You're lucky. Although it isn't all that good in quality, it's definitely improved from the earlier ones.

[Amateur]

So no yadif and no srestore like the first season? that's great. Will it play fine on TV sets in North America being 25fps?

[Gavino]

When I enter info() into the script it tells me that it's 25fps, field based = no, parity = top field first. "field based = no" makes me think it's progressive but i don't quite understand all of this fully.
"field based= no" doesn't tell you whether it's interlaced or progressive (which Avisynth doesn't know anyway). It just means that each frame is a complete frame rather than a field previously split by using SeparateFields().
http://avisynth.org/mediawiki/Interlaced_fieldbased

[manono]

So no yadif and no srestore like the first season? that's great. Will it play fine on TV sets in North America being 25fps?

This thread is now 4 pages long and I don't much want to go back through it all to figure out what you're doing. I'll assume you're making an NTSC DVD? If so, no Yadif or Srestore. Do the resize, encode for 25fps, and when done run the resulting video file through DGPulldown set for 25->29.97. Then it'll be 29.97fps and perfectly compliant for NTSC DVD. And you'll be able to use the same untouched audio.

Either that or slow the video to 23.976fps (AssumeFPS(23.976) and also slow the audio, encode for 23.976fps with standard 3:2 pulldown.

[Amateur]

I'm not planning on burning this onto a DVD if that's what your asking. I'll just be viewing from my computer connected to my television as an mp4 file using Windows Media Center from Windows 7. Would I still need to do that DGPulldown for that? Do I get this DGPulldown program from the neuron2 site? (It's the first result when searching Google). I want to download it from the official site if there is one.

Thank you for the help (and sorry I'm such a slow learner haha)

[Stereodude]

If you're using a PC connected to a TV via HDMI a 25fps file should be fine for playback as is.

[manono]

No, if you're not making a DVD then you don't need to run DGPulldown. You'll just have to mux it with the audio (AAC?) using something. You probably already know more about how to do that than do I.

[Guest]

@DongROY

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