Replays

Replays are recorded representations of events that can be viewed after they occur. They can document sports contests, video game sessions, or other activities. Replays may be video recordings, data-driven reconstructions, or a combination of both, enabling viewers to observe actions from multiple perspectives or to step through events in a controlled fashion.

In sports, official replays are used for review, arbitration, and highlight packages. In video games, replays can be video captures or in-game telemetry data that reconstructs events, allowing players to rewind to moments of interest, switch camera angles, and adjust playback speed. Some gaming systems distinguish between recorded video and replay data that reconstructs the sequence of actions within the game.

Common features of replays include a timeline, camera controls (such as orbiting, panning, and zooming), playback speed adjustments, and frame-by-frame stepping. Overlays may display actions, positions, and performance metrics. Replays can be stored locally on devices or in cloud libraries and may be linked to source games to preserve authenticity or enable quick access.

Uses and benefits include performance analysis and coaching, content creation for tutorials and highlights, debugging and bug reporting for developers, and archival of notable moments. Replays also support refereeing and rule enforcement by providing an objective view of events.

Formats and challenges vary by domain. Video replays use standard formats (such as MP4 or MKV), while game replays may store event data in custom or open formats. Considerations include storage requirements, data integrity, accessibility, and copyright or privacy concerns when publishing replays.