A gif is an image file format, so it will appear as a still photo in your project, rather than a moving clip. You can still add an animated gif to your project, but you will need to convert it to a video file before uploading it to your project.
You can upload video clips up to 400mb and we accept the following formats: MP4, AVI, MOV, QT, 3GP, M4V, MPG, MPEG, MP4V, H264, WMV, MPG4, MOVIE, M4U, FLV, DV, MKV, MJPEG, OGV, MTS, and MVI.