What is the right command to produce a Lossless JPEG file ?
magick wizard: ppm:- | ffmpeg -v trace -i - -map 0:v -c:v ljpeg -b:v 1M
-pred median -f mjpeg -y wizard.jpg
ffmpeg version N-119135-g1722f08acf Copyright (c) 2000-2025 the FFmpeg
developers
built with gcc 11 (Ubuntu 11.4.0-1ubuntu1~22.0
there is no Lossless JPEG cmpresstion in libjpeg
if you are dealing with single images use mozjpeg[1]
[1] https://github.com/mozilla/mozjpeg
On Thu, 3 Apr 2025 at 18:20, Gianluca Cannata wrote:
>
> What is the right command to produce a Lossless JPEG file ?
>
> magick wizard: ppm:- | ffmpeg -v
