Osu Replay — Viewer

// compute max combo: consecutive frames with click? but combo is based on hits in rhythm, we use consecutive clicks within time diff < 200ms as combo let combo = 0; let bestCombo = 0; let lastClickTime = -1000; for (let frame of replayFrames) if (frame.click) (frame.timeMs - lastClickTime) <= 350) combo++; else combo = 1;

.cursor-status background: #111a28; border-radius: 1rem; padding: 0.8rem; text-align: center;

For all its power, the official replay viewer has flaws. No frame-by-frame stepping. No heatmaps of cursor velocity. No direct export to video. That’s why third-party tools like and Circleguard exist—to extract hit error graphs, unstable rate, and raw telemetry.

.playback-buttons display: flex; gap: 12px; justify-content: center; margin: 12px 0 8px;

const validFrames = frames.filter(f => typeof f.timeMs === 'number' && typeof f.x === 'number' && typeof f.y === 'number'); if (validFrames.length === 0) throw new Error("no valid frames"); loadReplayData(validFrames, duration); lastActionSpan.innerHTML = '📁 自定义 replay 已加载'; catch(e) alert("Invalid JSON: " + e.message + " — using demo format"); generateDemoReplay(); osu replay viewer

osu! is a popular rhythm game that has captured the hearts of millions of players worldwide. With its vast array of beatmaps, challenging gameplay, and strong community, it's no wonder why osu! remains one of the most beloved music games out there. For those who have spent countless hours playing osu!, you might have wondered what it would be like to relive some of your favorite moments or analyze your gameplay in detail. This is where an osu replay viewer comes in.

: Many viewers let you instantly swap skins or toggle visual mods like "Hidden" during playback to better see what happened during a play. Top osu! Replay Viewer Tools

This is where the community shines. A variety of tools have been created to enhance, analyze, and share replays in ways the official client cannot.

An .osr file contains only data points (cursor coordinates, time stamps, and keypresses). It does not contain video or audio. To open an .osr file successfully, use these steps: // compute max combo: consecutive frames with click

Depending on whether you want deep analysis or just a quick way to share a video, different tools excel: Replay · wiki - Gameplay - osu!

The osu! replay viewer is not a feature. It is a culture .

input[type="range"] width: 100%; height: 4px; -webkit-appearance: none; background: #2a3a55; border-radius: 5px; outline: none;

/* main card */ .viewer-container max-width: 1300px; width: 100%; background: rgba(18, 25, 45, 0.75); backdrop-filter: blur(2px); border-radius: 2.5rem; box-shadow: 0 25px 45px rgba(0, 0, 0, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.05); padding: 1.5rem; border: 1px solid rgba(255, 255, 255, 0.08); No heatmaps of cursor velocity

This occurs if the replay was recorded on an older or different version of the map, or if variable framerates caused missing input packets. Ensure your game is updated to the latest stable release. Missing hit circles or black screens

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Every osu! player knows the feeling: you just cleared a brutally fast stream, hit a pixel-perfect jump section, or finally achieved a flawless Full Combo (FC) on a map you have been grinding for weeks. Your immediate instinct is to relive that moment and show it to the world.

Choose a popular skin and video resolution (up to 1080p 60fps). A network of volunteer computers renders the video for you. Download the finished MP4 link a few minutes later. Method B: Manual Recording (OBS Studio)

// extra smooth clicks replayFrames = frames; totalDuration = duration; recomputeStats(); setCurrentTime(0); syncUITime();