Is there a way to define the "quality/amount" of compression in ffmpeg with the mjpeg codec? Like -crf can be used with videos.
i.e. (mjpeg codec)
ffmpeg -i input.jpg output.jpg
produces a well compressed image, although it is slightly too compressed, what parameters can be tweaked to perform less/"better" compression?
Is there a better tool or library than ffmpeg?
You could use ImageMagick like this:
magick input.jpg -quality 82 result.jpg
You can also control the chroma sub-sampling if you really want to. Check the actual quality with:
magick identify -verbose image.jpg # or, more specifically
magick identify -format %Q image.jpg