60i to 24p A

[Backwoods]

Would it be possible to have a filter or combo of filters to give the results in this picture?

I've been using Decomb for ages but for actually knowing how it breaks up the footage is not what I follow really. The diagram I would think is a different method than usual.

[Backwoods]

Here's a diagram for standard 24p, these are DV cam methods.

since attachements do not show right away:

http://www.mikegetoffline.com/upload/store/24pAdvanced.gif for 1st post

http://www.mikegetoffline.com/upload/store/24pStandard.gif for 2nd post

[Mug Funky]

that telecine pattern is a bit odd... it's going 2332233223322 where it'd be smoother if it went 232323232323...

telecide doesn't grab at a specific pattern like what the pictures say, it simply grabs the most similar top and bottom fields, and weaves them. then decimate removes the resulting duplicates. it'll work on the above footage.

[scharfis_brain]

this pattern is called 24p A(dvanced)

cause it is used for 24p-NLE-editing on 60i systems.

after editing, one just knock out the combed frames (every fifth) to get the pure 24p.
no fieldmatching requried!

for previewing, this format may be usable, but not for final production.

as I said: it gets reduced after cutting!

[Backwoods]

just simply delete every 5th frame?

[scharfis_brain]

jep, that's all, with 24pA.

but ensure, to delete only the combed frames.

[NerdWithNoLife]

I know this is a golden oldie, but I've got to know the answer. How would one remove the combed frame and restore 24P? For fun, I recreated the scenario in this way:
AviSource("SomeProgressiveVideo.avi").AssumeFPS(24)
SelectEvery(4,0,0,1,1,1,2,2,2,3,3)
SeparateFields().SelectEvery(4,0,3).Weave()
The result is one of those weirdo 30i streams. This method of pulldown is called 24A, as was mentioned, 2:3:3:2 pulldown, and advanced pulldown, depending on the software / manufacturer.

Reading through the documentation of TDecimate, I found ways to eliminate the most similar frame, or a frame in the longest run of dups, but removing only a combed frame seems more advanced.

[wonkey_monkey]

Just guessing, but won't:

selectevery(5,0,1,3,4)

do just what you want? If the pattern holds, that is...

David

[NerdWithNoLife]

If the pattern holds, yes. But hopefully there's a more automated way to do it, without manual IVTC methods.

[NerdWithNoLife]

Forgive me for posting again, but I'm still patiently wondering if anyone has a more automated way (not just a SelectEvery...) to detect the one combed frame out of every 5, and remove it, creating 24p.

[scharfis_brain]

have you tried one of the standard IVTC methods available?
they should work flawlessly.

[NerdWithNoLife]

after editing, one just knock out the combed frames (every fifth) to get the pure 24p.
no fieldmatching requried!
have you tried one of the standard IVTC methods available?
Certainly this 2:3:3:2 pulldown can be removed by fieldmatching followed by decimation. I was just wondering if that fifth frame could be removed by using a decimating filter with the right settings, skipping the field matching step.

[scharfis_brain]

there was no need to implement this, because the normal settings will already work well.

[NerdWithNoLife]

Makes sense. Thanks for the answer. A speed increase by skipping the field matching isn't a big deal anyway, since advanced pulldown typically appears with SD footage, which inverse telecines in < realtime even on my older PC, and many of the newer HD cameras can output real 24p, without the pulldown.