Re-watch occurs when a learner plays a segment of a video that they have already seen, whether by replaying from the beginning, seeking back to a specific timestamp, or looping a clip in a player that supports it. In the xAPI Video Profile the seeked verb captures backward seeks with before and after timestamps, allowing an LRS (Learning Record Store) to identify exactly which segment was revisited and how many times across a cohort. As an engagement signal re-watch is ambiguous and must be interpreted in context: a cluster of re-watches concentrated on the same ten-second span of an explanation diagram suggests a comprehension bottleneck that the instructor should address. By contrast, re-watches distributed across an entire case-study walkthrough are more likely to reflect deliberate note-taking rather than confusion. Aggregated across a cohort, re-watch density layered onto the engagement heatmap produces the richest picture of where a video holds attention versus where it produces confusion. Some re-watch is desirable — it indicates the video has lasting reference value and learners are self-remediating. However, a spike correlating with a low score on the associated assessment quiz is a reliable signal that the explanation failed and the segment should be refilmed or supplemented with a worked example.
