POV-Ray : Newsgroups : povray.binaries.animations : Playing with matrix transforms : Re: Playing with matrix transforms Server Time
5 Feb 2025 15:05:09 EST (-0500)
  Re: Playing with matrix transforms  
From: Kenneth
Date: 27 Jan 2025 10:50:00
Message: <web.6797aad828e99934e83955656e066e29@news.povray.org>
William F Pokorny <ano### [at] anonymousorg> wrote:
> On 1/25/25 19:58, William F Pokorny wrote:
>
> > Next time I create an animation with ffmpeg, I'll try to get the 4:2:0
> > chroma sub-sampling.
>
> Alright. Found myself playing again today with a direct matrix transform
>  against yuqk's updated wrinkle pattern. The attached animation uses
> the sampling you suggested. Does it work in programs where failing before?
>

YES, this animation plays in all of my Windows media players, including
Irfanview. AND, it also plays in Firefox's 'preview'. Great work! Thanks for
taking the time to dig down into your settings for ffmpeg; very much
appreciated.

For this animation, my VLC Media Player does not report the particular 'chroma
subsampling' scheme that you used... but that seems to be its usual behavior
when encountering the 'typical' 4:2:0. So I guess the switch from 4:4:4 to 4:2:0
has solved the problem. That is interesting news! :-)


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