The trick in photoshop is import the gif as a video, when appears the selection file window put *.* and push enter. Then you have all files in display so you select the *.gif
When the the file is imported you have to cut identical frames of animation an play whit the delay between frames (by default is 0.04 so I changed mine to 0.08)
If you don't have photoshop, look for Beneton Movie GIF, is the same idea