Selur's Little Message Board

source video is 1920x1080 29.970 fps MBAFF Top Field First. and i didnot see any strange motion.



i want to encode to 720p progressive 23.976.
with tivtc the result is some frame missing and the credit text has aliasing.

with qtgmc bob + srestore default setting in hybrid and set frame to 23.976 the result is some frame missing and the credit text has aliasing.

-> try another source filter
if you want further help, share more details and read the sticky

Cu Selur

(24.08.2022, 21:03)Selur Wrote: [ -> ]-> try another source filter
if you want further help, share more details and read the sticky

Cu Selur

media info source video

credit text in source video



the result encode with tivtc or qtgmc bob + srestore frame 23.976, the text become weird.

Sadly you did not read the sticky ([INFO] Infos needed to fix&reproduce bugs,..) or simply ignored it.
The amount of information you share isn't really helping.
No clue what you are doing.
No clue, what the issue is with the text.
Aliasing seems to me roughly the same.

Cu Selur

(25.08.2022, 04:55)Selur Wrote: [ -> ]Sadly you did not read the sticky ([INFO] Infos needed to fix&reproduce bugs,..) or simply ignored it.
The amount of information you share isn't really helping.
No clue what you are doing.
No clue, what the issue is with the text.
Aliasing seems to me roughly the same.

Cu Selur

source video


encoded video with qtgmc bob + srestore 23.976




debug file : https://www.file.io/ybLU/download/qCH9wGqCnR9p

a. Does it make a difference if you set QTGMC preset to 'Custom' and change the 'Lossless' value?
b. Is this effect already visible in the Vapoursynth Preview or just after the encogin?

(25.08.2022, 07:16)Selur Wrote: [ -> ]a. Does it make a difference if you set QTGMC preset to 'Custom' and change the 'Lossless' value?
b. Is this effect already visible in the Vapoursynth Preview or just after the encogin?

A. Change the loseless value still get the same result with the text become weird.
B. Already visible on vapoursynth preview.

Okay, so the issue is with the filtering and not the encoding.
Since your source is a blu-ray it might not be actually interlaced by just encoded with MBAFF to please the standard.
So, if you overwrite the scantype to progressive (this will disable all deinterlace handling), do you:
a. see combing in the Vapoursynth preview? (best check, intro, throuout the clip and the outro)
b. still see the change in the text

Cu Selur

(25.08.2022, 13:09)Selur Wrote: [ -> ]Okay, so the issue is with the filtering and not the encoding.
Since your source is a blu-ray it might not be actually interlaced by just encoded with MBAFF to please the standard.
So, if you overwrite the scantype to progressive (this will disable all deinterlace handling), do you:
a. see combing in the Vapoursynth preview? (best check, intro, throuout the clip and the outro)
b. still see the change in the text

Cu Selur

a. no combing, the video look smooth
b. no change in the text. it look good

so, the video was encoded on 29.970 fps.


thanks for the reply

Okay, so video is progressive, but was basically flagged as interlaced, which explains why deinterlacing causes the issue.
Depending whether there are duplicates in the stream you might still want to use sRestore.

Cu Selur