The subject matter of this specification can be implemented in, among other things, a method that includes causing presentation of a collaborative video project to a first user account that includes a set of one or more shared video clips and a set of one or more personal video clips. The method includes receiving from the first user account a first selection of a video clip in the set of personal video clips and, in response, adding the video clip to the set of shared video clips. The method includes causing presentation of the collaborative video project to a second user account, including presentation of the set of shared video clips. The method includes receiving from the second user account a second selection of the video clip and, in response, adding the video clip to a collaborative video for the collaborative video project.