[FFmpeg-user] telecine pattern 5555 - Judder-free, 60 FPS telecine (?)

Mark Filipak markfilipak.windows+ffmpeg at gmail.com
Sun Apr 5 12:11:09 EEST 2020

On 04/05/2020 04:31 AM, Carl Eugen Hoyos wrote:
> Am So., 5. Apr. 2020 um 10:19 Uhr schrieb Mark Filipak
> <markfilipak.windows+ffmpeg at gmail.com>:
>> Any 24fps video displayed on a 60Hz TV must be telecined somehow.
> This is only true for (old) CRT NTSC screens.

I think you're wrong, Carl Eugen. A 60Hz TV has a screen that runs at 60Hz, only. If you give it 
something else, it converts it. If you give it 24fps, the TV's electronics telecines it. Now, the 
player is supposed to query the HDMI capabilities and do the telecine for the TV, but I'm pretty 
sure that the TV can also telecine.

> Note that there is another issue with your argumentation: You are assuming
> that current screens are bound to some general refresh rate that is defined
> outside and has to be strictly followed (as was true for above screens).

My TV says it's 60Hz. It says it accepts 23 to 76 fps. Those are its responses to an HDMI query via 

> This
> is not true anymore and therefore your attempt to reduce "judder" by
> increasing the framerate is in vain and will likely lead to increased judder.

Not according to my eyes.

> Carl Eugen

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