Multi-modal collaborative web-based video annotation system

A video annotation software product stored in a memory of an electronic device and executed by a processor causing the processor to perform the steps comprising:

• receiving data corresponding to a video, data corresponding to a plurality of point comments associated with the video, each of the plurality of point comments being associated with a single point in time of the video and with a particular user account of a plurality of user accounts, and data corresponding to a plurality of segment comments associated with the video, each of the plurality of segment comments being associated with a span of time of the video and with a particular user account of the plurality of user accounts;
• displaying to a user a video annotation interface comprising a video pane configured to display the video, a first video timeline bar including a video play-head indicating a current point of the video which is being played, a second segment timeline bar including initial and final handles configured to define a segment of the video for playing, a plurality of point comment markers, each of the first plurality of comment markers corresponding to one of the plurality of point comments associated with the video, a plurality of segment comment markers, each of the second plurality of comment markers corresponding to one of the plurality of segment comments associated with the video, a comment display pane displaying text corresponding to at least some of the plurality of comments associated with the video, and a comment control configured to allow the user to add a comment to the video;
• receiving, from the user, input corresponding to one or more desired annotations;
• associating the input one or more annotations with a selected first segment of the video;
• updating the video annotation interface so that the plurality of comment markers displayed in connection with the video timeline bar includes a new segment comment marker corresponding to the first segment;
• and
• displaying an indication of the input one or more annotations overlaid over the video in the video pane as an annotated video.