История изменений
Исправление greenman, (текущая версия) :
$ magick dancing_banana2.lossless.webp -resize 50% -layers coalesce output.webp
$ file output.webp
output.webp: RIFF (little-endian) data, Web/P image, animated, with alpha, 494+1x524+1
$ file dancing_banana2.lossless.webp
dancing_banana2.lossless.webp: RIFF (little-endian) data, Web/P image, animated, with alpha, 989+1x1049+1
https://superuser.com/questions/1785480/how-to-resize-an-animated-webp
но размер файла вырос
4764 окт 22 2013 dancing_banana2.lossless.webp
30046 фев 12 10:02 output.webp
Исходная версия greenman, :
$ magick dancing_banana2.lossless.webp -resize 50% -layers coalesce output.webp
$ file output.webp
output.webp: RIFF (little-endian) data, Web/P image, animated, with alpha, 494+1x524+1
$ file dancing_banana2.lossless.webp
dancing_banana2.lossless.webp: RIFF (little-endian) data, Web/P image, animated, with alpha, 989+1x1049+1
https://superuser.com/questions/1785480/how-to-resize-an-animated-webp