Flashback

Flashback adds instant replay capabilities to live streams directly in the browser. While you watch a live stream, Flashback continuously records a short rolling buffer of the video in the background. When triggered, it instantly replays the last seconds without leaving the page. Key features: • Instant replay for live streams • Lightweight overlay player • Runs entirely inside the browser • No backend or external services required Flashback is built using modern browser media technologies such as MediaRecorder and MediaSource Extensions, implementing a DVR-style replay system directly on the client side. Patch Version 1.1.0: - Fixed DVR reset when switching Twitch channels - Replay now closes cleanly when the source video changes or is lost - Improved DVR session reset behavior to prevent stale chunks from leaking into new sessions - Improved replay cleanup stability.