Flashback Server
Record your Paper/Folia server's gameplay into Flashback-format replays — entirely server-side. The players being recorded need no mods; you view the results with the Flashback client mod.
Features
- Record any player server-side →
.flashbackfiles readable by the Flashback client. - Clip system — keep a rolling buffer per player and save the last N seconds on demand, or automatically when a player dies.
- Folia-ready — works on the regionized Paper fork, no extra config.
- Zero dependencies — pure Netty packet capture; no ProtocolLib to break on every update.
- Renderable snapshots — recordings include a synthesized initial state (registries, chunks, player) so the Flashback client renders them from the start.
- Multi-chunk recordings for long sessions + dimension changes.
Commands (flashbackserver.replay, default op)
| Command | Description |
|---|---|
/replay start players <player> |
Start recording a player |
/replay stop players <player> |
Stop & save a recording |
/replay clip arm/disarm/save <player> |
Rolling clip buffer controls |
/replay verify <file> |
Decode-check a saved replay (diagnostic) |
/replay help |
Help |
Configuration
clips.window-seconds(default 30) — rolling clip length.clips.auto-clip-on-death(default true) — auto-save a clip when an armed player dies.telemetry.enabled(default true) — anonymous, no-PII usage telemetry; set false to disable.
Install
- Paper or a Paper fork (Purpur/Folia) for Minecraft 1.21.5–1.21.11.
- Drop the jar in
plugins/, restart. No dependencies. - View replays with the Flashback client mod.
Privacy
Anonymous, opt-out telemetry (server platform/version, recording/clip counts & sizes, error class names). No player names, UUIDs, or IPs are ever collected. Disable with telemetry.enabled: false.
Flashback Server is an independent project, not affiliated with or endorsed by the Flashback mod or its author. It produces files compatible with the Flashback format for interoperability.
