3:2 pulldown, can i do it?

[Raging_Inferno]

Is it possible to give divx 5 a 3:2 pulldown?

[manono]

Hi-

Ordinarily pulldown is run on an .mpg stream. I think you can do a kind of a fake pulldown by doing this:

SeparateFields()
SelectEvery(8,0,1,2,3,2,5,4,7,6,7)
Weave()

And that will convert it to 29.97fps. If I may be so nosy, why would you want to do this? Are you preparing the .avi for DVD conversion? If so, I think it would be better to run pulldown after .mpg encoding. That way, you'll only be storing the video at 23.976fps, and you'll have flags set to output the 29.97fps, and you'll get much better quality because of the 20% fewer number of frames actually being stored. Or maybe I misunderstood the question. Or maybe you didn't know what you were asking. :)

[Raging_Inferno]

hmmmmmmmm, interesting.....
i wonder if thats gonna work...

i want to do it cuz, if i leave it at 23.97 frames (from a IVTC from tmpegenc), what happens is that im a few miliseconds short and that might cause the movie to go outta sync, so if i perform it, i would get back all the frames i would need. if i tell it to be 29.97 from tmpegenc and use vfapi, it throws in 6 extra frames that look kinda of funny when the camera scrolls across something.
i hope i explained that right...
oh wait....
is there a command i can use with avisynth that would load a vfapi avi or tmpegenc save file?

[jggimi]

...what happens is that im a few miliseconds short....First thought: Instead of trying to fix a broken procedure, why not use a working and well understood process?

Second thought: A proper pulldown adds frames and changes the framerate, but shouldn't change content length. e.g.: 1:00:00 at 23.976 = 86,314 frames. 1:00:00 at 29.97 = 107,892 frames.

Third thought: What does Raging_Inferno mean by "a few milliseconds short" ?? :confused:

[Raging_Inferno]

after performing and IVTC the 23.97 version total time is shorter than actual version by afew 100 milliseconds
i dunno why

[manono]

Hi-

if i tell it to be 29.97 from tmpegenc and use vfapi, it throws in 6 extra frames that look kinda of funny when the camera scrolls across something.

Yeah, that's what pulldown does. It's meant for playing on interlaced TV sets, and not computer monitors. My suggestion is to toss out the VFAPI method like you would yesterday's garbage and switch to encoding with an .avs, perhaps one generated by GKnot, and let Decomb do the IVTC. The length will come out the same as the original 29.97fps version. There are plenty of guides for this on this site. Good Luck.

[Awatef]

@ raging_inferno
IVTC *NEVER* causes audio sync loss, NEVER! (!!)

[Raging_Inferno]

you know what?
!@#$ the whole 29.97 frames
ill just keep it at 23.97
i think its in sync well enough
most sounds seems to match the objects in the movie
(stupid anime, can't read their lips, so it makes it harder to tell if it is in sync)

[XiS]

XMPEG and DVD2AVI does 29.97 to 23fps automatically because the streams indicates "repeat first field" sometimes. The best way to have the best result is to let them autodetect the new frame rate. The frame using repeat first field will be simply skept. :)