To create a movie from images, “convert” and “ffmpeg” would be often used. “convert” is useful to create GIF animations while “ffmpeg” may be used for wide range of applications.
Download rpmforge-release-0.5.2-2.el6.rf.x86_64.rpm from http://pkgs.repoforge.org/rpmforge-release/
# rpm -Uhv rpmforge-release-0.5.2-2.el6.rf.x86_64.rpm
# yum update ### I saw some errors and I ignored them.
# yum install ffmpeg
For ImageMagick (convert)
# yum install ImageMagick
Suppose that there are PNG files like img_000001.png, img_000002.png, …
convert -delay 30 -loop 0 *.png movie.gif