On 27/01/2025 15:01, William F Pokorny wrote:
> Test post of the new-ish avif image format alongside a jpeg file created 
> by gimp with a quality level of 90.0. The avif I created with ffmpeg 
> using an input png file and default settings.
> 
> The Ubuntu 24.04 support is quite good for the avif format at this 
> point, though, not quite universal (netpbm).
> 
> The png file came in at 314737 bytes.
> The jpg file at 64355 bytes.
> The avif file at 8410 bytes (It's expensive to encode).
> 
> One of the attractive bits is the avif format supports hdr and channel 
> depths of 8, 10 and 12 bits. Plus transparency - where jpeg does not.
> 
> I'm thinking about adding support for the format (in addition to pfm 
> (*)) to my yuqk playpen fork.
> 
> Bill P.
> 
> (*) - The real time ray-tracing (rtr) feature in yuqk has a crude image 
> capture to the pfm format today - but POV-Ray (yuqk) cannot read it or 
> otherwise save to the pfm image format.




It's a very good idea. however, we need to look at the development 
effort required to use this new format for out and in images.
Unless you use ready-made libraries like ImageMagick, "libheif", 
"libavif", ...



In terms of comparability, the images in your messages are clearly 
visible, with some differences, but visible.



Good job.



-- 
kurtz le pirate
compagnie de la banquise

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