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Old 25th April 2022, 08:46   #1  |  Link
jsj2251
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What is a good way to convert from 29.97fps to 23.976fps?

I want to combine the texture of the vintage camcorder with the feeling of 24 frames.

After changing the sequence setting to 23.976 fps within Adobe PP, a weak break occurs when playing.

Is there a better way?

Looking at the other posts,

It says to use Reel Smart Motion Blur or Motion Flow, but I don't know what it means exactly.
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Old 25th April 2022, 21:20   #2  |  Link
FranceBB
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Wouldn't it be better to use 3:2 pulldown to bring 23,976 to 29,970 instead?

Anyway, if you wanna stick with going from 29,970 to 23,976 and you think that decimating it makes it looks choppy, you can use (people are gonna hate me for suggesting it) blending.
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Old 26th April 2022, 00:41   #3  |  Link
jsj2251
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Quote:
Originally Posted by FranceBB View Post
Wouldn't it be better to use 3:2 pulldown to bring 23,976 to 29,970 instead?

Anyway, if you wanna stick with going from 29,970 to 23,976 and you think that decimating it makes it looks choppy, you can use (people are gonna hate me for suggesting it) blending.
Isn't 3:2 pulldown a technology that converts from 24p film to 60p digital video?

Sadly, my vintage camcorders do not have 24P function...
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Old 26th April 2022, 06:20   #4  |  Link
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Quote:
Originally Posted by jsj2251 View Post
Isn't 3:2 pulldown a technology that converts from 24p film to 60p digital video?
It essentially means that you have 3 real frames and two repeated ones, 3 real frames, 2 repeated ones etc.
So essentially, you're going from 23,976p to 29,970p.
In the interlaced version you're referring to, instead of frames you have fields but it's exactly the same: 3 real fields, 2 repeated fields, 3 real fields, 2 repeated fields etc and you get a 29,970i stream that the TV then bobs to 60p, but the real original footage is still 23,970p.

Quote:
Originally Posted by jsj2251 View Post
Sadly, my vintage camcorders do not have 24P function...
I see. Anyway I would actually suggest you the software we've been working on (me, steipal, momocampo, emcodem) called FFAStrans. It's based on Avisynth and it will handle the frame rate conversion for you, including the encoding part, before you import the files into your non linear editor.

https://forum.doom9.org/showthread.php?t=176655
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Old 30th April 2022, 10:08   #5  |  Link
hello_hello
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If you use Avisynth, I found FrameRateConverter does a pretty good job of converting 29.97fps to 23.976fps. Admittedly I've only used it for that sort of conversion to change the opening titles of a TV show to 23.976fps to match the frame rate of the actual episode, but the result was pretty good. It can't hurt to try it. I haven't used FrameRateConverter v2.0 beta, only version 1.3.
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Old 30th April 2022, 10:47   #6  |  Link
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V2.0 beta better than 1.3
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Old 30th April 2022, 21:09   #7  |  Link
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Quote:
If you use Avisynth, I found FrameRateConverter does a pretty good job of converting 29.97fps to 23.976fps.
*gig* Didn't know one could use FrameRateConverter to reduce frame rate/count, I only used it to increase the frame rate&count.
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Old 15th June 2022, 19:52   #8  |  Link
takla
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Using ffmpeg, this gives a smooth playback
Code:
-vf "minterpolate=fps=24000/1001:mi_mode=blend:scd=none"
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