"ITVC" AviSynth filter that substracts noise and makes final 24p?

[yoeymeme]

The title probarly explains this poorly but is there any AviSynth+ filter that can make a interlaced source 60i down to 24p but at the same time have a technique of "subtracting" the noise or wrong details out of the 60p and produce clean 24p and not just selecting a special frames in the 60p order like a normal ITVC function?

If there aint no filter like that I made a suggestion

edit: i explained it a lil better in #5

[davexnet]

If it's telecined 24 fps source > 30i, you can use IVTC followed by decimate to recover the original 24 frames per second

[manono]

You can't use two already developed filters, one for the IVTC (assuming you have a hard telecined film source) and the other for the noise? Is there an advantage to performing both functions in a single filter?

[yoeymeme]

If it's telecined 24 fps source > 30i, you can use IVTC followed by decimate to recover the original 24 frames per second

but does ITVC have a technique of making a clean total frame by using the the 30i->60p frames?

cuz in the 60p frames u see alot of doubles with its own noise and what if it could just substract the noise of the same film frames and make a clean frame in the 24p order? thats what im asking, ik about the standard 30i to 24p but is there any more advanced itvc functions that kinda works like that? I explained it better in #5

[yoeymeme]

You can't use two already developed filters, one for the IVTC (assuming you have a hard telecined film source) and the other for the noise? Is there an advantage to performing both functions in a single filter?

No im asking if theres a filter like a advanced ITVC filter that does the 30i->60p down to 24p but has a special technique, throughout the 60p frames you can notice the same film frames because its actually 24p but theres also unique noise and "wrong details" in the 60p frames (its analog video that displays 24p film), is there a filter that makes a average out of those 60p frames and outputs clean 24p frames


if I get a 30i analog film footage, apply BOB which makes it 60p, then click the arrow keys back and forth, its the same film frame but theres unique noise there in the 60p, what if the ITVC function could take those two (or 3) noisy "film still frames" into consideration and averaging them into a clean frame putting them into the 24p order

https://files.videohelp.com/u/307129/2024-01-26%2020-58-17.mkv

[davexnet]

Wrong field order? If it's not that, post a section of the actual source

[yoeymeme]

Wrong field order? If it's not that, post a section of the actual source

No not wrong field order either, the video is just showing the noise from standard bob 60p that can be "subtracted" in the 24p down conversion,

basically going trough the bob 60p, and combining, blend subtracting and making clean 24p

[poisondeathray]

No im asking if theres a filter like a advanced ITVC filter that does the 30i->60p down to 24p but has a special technique, throughout the 60p frames you can notice the same film frames because its actually 24p but theres also unique noise and "wrong details" in the 60p frames (its analog video that displays 24p film), is there a filter that makes a average out of those 60p frames and outputs clean 24p frames


if I get a 30i analog film footage, apply BOB which makes it 60p, then click the arrow keys back and forth, its the same film frame but theres unique noise there in the 60p, what if the ITVC function could take those two (or 3) noisy "film still frames" into consideration and averaging them into a clean frame putting them into the 24p order

https://files.videohelp.com/u/307129/2024-01-26%2020-58-17.mkv

No, because IVTC doesn't go to "60p" . First step in IVTC is field matching to 29.97p

When you bob to "60p", and step through frames, you are looking at resampled fields. The "changing noise" is top field and bottom field from the same frame. The matched top and bottom field actually have the same noise when matched , because they make up a single frame; ie. They are part of the same progressive frame . 2 matched fields = 1 film frame . If you were to average them, you would blend the top and bottom scanlines and no longer have a full quality frame

If you "BOB", instead of IVTC, you lose half the vertical resolution. You are using 1/2 a frame (a single field resampled to a frame) instead of full progressive frame (2 fields belonging to the same film frame)

[Cornucopia]

Yes, IVTC should be able to start with 30i (29.97i really) and go directly to 24p, without needing to pass through 60p. Doing so (to 60p) introduces errors & artifacts.


Scott

[manono]

No im asking if theres a filter like a advanced ITVC filter that does the 30i->60p down to 24p

As pdr explained, there's no 60p in the chain, and no additional noise added. An IVTC consists of, first, a field matcher to go to 30p. Then the "decimator" removes the one duplicate frame in every 5 to bring it down to 24p. And at that point you can apply your denoiser.