I don't know, how I can to make shadow effect for animated GIF. For me good solution in any open source/free program, not Photoshop.
For PNG images I make shadow effect. Example:
But how I can to make similar effect for animated GIF? Example GIF:
I don't need to edit GIF, I only need add shadow in borders of animated GIF. Perhaps, correct its effect not named «shadow».
Did not help
For PNG I use ShareX and Greenshot programs, but if I try add shadow for GIF like for PNG, output black image for me. I not find answer for my question in Google.