imagemagick - Is this GIF a still image or an animation? (in Ruby) -

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how can use rmagick determine how many frames remote gif has?

you can use magick::imagelist#length:

returns number of images in imagelist.

for example, remote gif:

has 12 frames:

require 'rmagick' magick::imagelist.new('https://i.giphy.com/zllydol7ndm7c.gif').length #=> 12

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