Converting Video/Movie to GIF Animation | Adobe Photoshop

File > Import > Video frames to layers

Select the Movie file. 

Select ‘Range to Import’ (From beginning to end or Selected Range only)

Uncheck the option ‘Make Frame Animation’.

Go to File > Save for Web and Devices

Save the Image.

Note:

 Movie should be in .mov, .avi, .mpg, .mpeg, .mp4 formats otherwise we need converter to convert in these formats.