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+--- Thread: [HELP] Advice requested to convert 25 fps to 23.976 (/thread-4308.html)
Advice requested to convert 25 fps to 23.976 - Oldermediaformats - 30.01.2026
I have a PAL DVD of John Woo's Bullet in the Head that I extracted in MakeMKV and want to take the MPEG-2 file for the feature film and convert it from 25 to 23.976 fps. The 25 is a CFR. Hybrid initially deciphered it as a telecine and then changed the input scan type to TFF. I am pretty sure that the entire transfer is interlaced.
There are probably a couple ways I could go about the conversion. Within Vapoursynth, I could select TFF as the input scan and under QTGMC check "Bob". For the Preset, I could choose Placebo for best quality. (I have a really fast computer and don't mind waiting anyway.) Then under the Reduction sub-tab under Frame tab, check sRestore. I wonder if I should also check "bob before"?
The alternative would be to treat it as a telecine (since it was transferred from celluloid) and execute a TIVTC with Mode 2 selected and 23.976 as the target frame rate.
After the conversion, I want to resize it from 720x576 to 1280x720.
But first things first. Your suggestions are most welcome.
RE: Advice requested to convert 25 fps to 23.976 - Selur - 30.01.2026
Quote: I am pretty sure that the entire transfer is interlaced.then let Hybrid know by overwriting the scan type to 'tff' or 'bff'.
Quote:For the Preset, I could choose Placebo for best quality.Note that best quality does not necessarily mean least lossy.
read: https://forum.videohelp.com/threads/404164-Why-is-QTGMC-so-destructive-and-why-do-so-many-people-still-recommend-it
Quote:I wonder if I should also check "bob before"?No.
Quote:The alternative would be to treat it as a telecine (since it was transferred from celluloid) and execute a TIVTC with Mode 2 selected and 23.976 as the target frame rate.mode 2 will crash,... see: https://github.com/dubhater/vapoursynth-tivtc/issues/4
using mode 7 instead should work, but I would prefer using sRestore
Cu Selur