Comment by rgrove

Log into your SmugMug account and open the Organizer. Browse to the gallery (or galleries) containing the videos you want to download, click the "Download" button in the toolbar (downward pointing arrow with a flat line underneath), and select "Download Gallery".

SmugMug will generate a zip file containing the original, unmodified images and videos in the gallery, and will email you a download link when it's ready.