When you import a folder
of sequenced image files, each image becomes a frame in a video
layer.
Make sure that the image
files are in one folder and are named sequentially.
The folder should contain only those images you want to
use as frames. The resulting animation will be more successful if
all files have the same pixel dimensions. To order frames correctly
for the animation, name the files in alphabetical or numeric order.
For example, filename001, filename002, filename003,
and so forth.
Do one of the following:
To open an image sequence directly, choose
File > Open.
To import an image sequence into an open document,
choose Layer > Video Layers > New Video
Layer From File.
In the Open dialog box, navigate to the folder with image
sequence files.
Select one file, choose the Image Sequence option, and
then click Open.
Note: Selecting more than one file in an image sequence disables
the Image Sequence option.