[magick-users] Using identify for unique IDs

[duc.sequere.aut.de.via.decede at imagemagick.org]

>? way I can take like the last frame minus 10 or a middle frame

Assume you know your image has 50 frames.  To get the middle frame,

  identify -format '%#' 'mymovie.gif[25]'

or to get the last 10 frames:

  identify -format '%#' 'mymovie.gif[40-49]'