Watching 24Hz-video jitter-free without having to use SVP

[AlessioKuro]

Hi there,
I'm trying to play 23.97...Hz movies smoothly on my 60Hz monitor, but it just doesn't work.
I have installed the autospeedwin plugin, and, after a few modifications to the source code, it works perfectly. My monitor now switches to 48Hz when playing the video.

Now, since the movie is 23.97...Hz, there are, as far as I understood, two options.
#1 either use the autospeedwin script to increase the playback speed so the movie plays back in 24Hz
#2 use video-sync=display-resample

I've tried both versions, and both versions "worked". The first one succesfully made the video play in 25fps, and the second one, well, I don't know how to check if it worked. But I've used these settings:

video-sync=display-resample
scale=oversample
tscale=oversample
Interpolation=yes

And I have really tried every single settings combination, sometimes with interpolation on, sometimes off, then I've tried tscale=mitchell, video-sync-max-video-change=50 or video-sync=display-*, and other stuff, but no matter what I've tried, I always get the same result:
The video really jitters and is not smooth when the scene is moving quickly.

But when I use SVP to interpolate it from 23.97...Hz to 48Hz, it looks soo fluid and jitter-free.
The text on panning scenes is much more readable, and it literally looks 1000% smoother, even on lowest SVP settings. The problem is that it makes my laptop go really hot.

But shouldn't it be possible to make 24Hz content look smooth without SVP? Of course it can't be as fluid as SVP, but it should be at least fluid enough so the text in moving scenes is readable (right now it's really hard to read moving text without SVP) and so the jitter is less annoying and noticeable.
I mean, there shouldn't be 3:2 pulldown anymore since I was playing 24fps content on a 48Hz monitor, but I don't feel a big difference in reduced jitter. It is still really jittery and not smooth.

Did I do something wrong, and is there something I can improve?

Thank you!

[Doofussy2]

If you're bitstreaming audio, you should use --video-sync=display-vdrop

[AlessioKuro]

I'm not sure if I'm bitstreaming audio, but my problem is just the visual jittering.
The audio is working fine.
Even with this setting, it's still jittery and panning text unreadable. I actually don't even see any difference with interpolation enabled vs having it disabled.

[zc62]

You should post log files to show if interpolation is indeed enabled or not.

Interpolation=yes

I'm not sure if this is just a copy-paste error from your conf to github or it is really the thing in your conf. I don't think mpv accept case-insensitive option names.

[AlessioKuro]

Oh, this was just the copy-paste error.
Here is my full mpv.conf (renamed to txt for Github):
mpv.txt

And here's the mpv.log:
mpv.log

[zc62]

Looks like you are not bitstreaming the audio, so you can set the option back to display-resample.

The thing is, it seems that compiling the shaders costs too much time, and the A-V desync detection mechanism decides to turn off display-sync options completely.

[   3.844][w][cplayer] Audio/Video desynchronisation detected! Possible reasons include too slow
[   3.844][w][cplayer] hardware, temporary CPU spikes, broken drivers, and broken files. Audio
[   3.844][w][cplayer] position will not match to the video (see A-V status field).
[   3.844][w][cplayer] 
[   3.888][v][cplayer] Video sync mode disabled.

This is actually a known issue, see #6342. A workaround would be using shader cache, see #6342 (comment)
Put something like this in your conf:

gpu-shader-cache-dir="~~/shaders_cache"

and try to open the same video for the second time (use the first time to compile and store the shaders), see if it helps. (Log file, and screen shot of Shift+i, then press 2, see if interpolation is shown or not.)

[Akemi]

duplicate of #6342.