Techniques and devices for creating an AutoLoop output video include performing pregate operations. The AutoLoop output video is created from a set of frames. Prior to creating the AutoLoop output video, the set of frames are automatically analyzed to identify one or more image features that are indicative of whether the image content in the set of frames is compatible with creating a video loop. Pregate operations assign one or more pregate scores for the set of frames based on the one or more identified image features, where the pregate scores indicate a compatibility to create the video loop based on the identified image features. Pregate operations automatically determine to create the video loop based on the pregate scores and generate an output video loop based on the loop parameters and at least a portion of the set of frames.