How to make an animated GIF in Photoshop

If you're starting with a short video, you'll first need to convert the frames of the video into individual layers. Go to File > Import > Video Frames to Layers....

Locate and select the video file you want to use and click Open.

Click OK to convert the video frames to a single layered file.

Note: Photoshop may not be able to fully import a video that is too long. Use the options in the Import window to limit the amount of frames imported. You can select to import the entire video, or choose just a segment of the video. You can also limit the amount of frames imported to a set interval, such as every 2 frames.