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by BoingBoomTschak
12 days ago
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Some followup tests for lossless photo encoding $ real_time() { command time -p sh -c '{ "$@"; } 2>&3 >&2' argv0 "$@" 3>&2 2>&1 | sed -n 's#^real ##p'; }
$ magick identify DSC00191.ppm
DSC00191.ppm PPM 5492x3672 5492x3672+0+0 8-bit sRGB 57.6972MiB 0.090u 0:00.042
$ for s in 0 3 6; do real_time magick DSC00191.ppm -quality 100 -define heic:chroma=444 -define heic:cicp=1/13/0/1 -define heic:speed=$s DSC00191_s$s.avif; done
76.71
12.80
1.73
$ real_time magick DSC00191.ppm -quality 0 DSC00191.jp2
3.315
$ real_time sh -c 'magick "$1" -define png:compression-level=0 "$2" && oxipng -q -o2 -s "$2"' argv0 DSC00191.{ppm,png}
7.746
$ for e in 3 6 9; do real_time magick DSC00191.ppm -quality 100 -define jxl:effort=$e DSC00191_e$e.jxl; done
0.53
1.33
7.71
$ for m in 0 3 6; do real_time magick DSC00191.ppm -quality 100 -define webp:lossless=true -define webp:method=$m DSC00191_m$m.webp; done
5.86
10.41
46.03
$ du -k DSC00191* | sort -n
20068 DSC00191_e9.jxl
20608 DSC00191_e6.jxl
21324 DSC00191_m6.webp
21340 DSC00191_m3.webp
21772 DSC00191_e3.jxl
23744 DSC00191.jp2
23848 DSC00191_s0.avif
23896 DSC00191_s3.avif
24212 DSC00191_s6.avif
24556 DSC00191.png
26428 DSC00191_m0.webp
59084 DSC00191.ppm
Not fabulous, really. If you've got a YUV source, everything changes, of course. |
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