Whether you just hit your first 100pp play or finally passed a brutal 8-star map, osu! is a game defined by moments of triumph. But once the ranking screen fades, how do you relive that perfect run?
Run the render command (e.g., danser -replay="your_replay.osr" -out="my_video" ). Find your finished video file in the videos output folder. Why Use an External Replay Viewer?
An is a third-party application or website that takes an .osr file (the file format for osu! replays) and simulates or renders the gameplay outside the main game client. These tools are crucial for several reasons:
Best for: Sharing a new tool, asking for feedback, or a tutorial.
Following the 2024 controversy surrounding the player "cloutiful," where an analysis of keypress durations revealed an anomaly (overwhelming majority of keypresses held for exactly 63ms), the community turned to specialized tools to scrutinize input patterns. The by clarks03 allows users to analyze their own or others' top 100 leaderboard scores alongside uploaded .osr files. It visualizes keypress durations, helping you spot patterns like inhumanly consistent tapping or suspiciously long holds. A notable disclaimer from the developer states that the tool does not automatically detect cheats; it simply provides a digestible interpretation of the replay data, leaving the final analysis to the user. osu replay viewer
What most outsiders miss is the art of the replay.
Pressing F2 in the results screen saves the replay as an .osr file in your osu!/Replays folder. Why You Should Watch Your Replays
In the rhythm game , an is a tool or feature used to watch, analyze, or render recorded gameplay stored in .osr files. While the standard game client has a built-in viewer, players often use third-party tools to overcome its limitations, such as the inability to rewind or perform deep aim analysis. Types of Replay Viewers 1. In-Game Viewers
I built a lightweight osu! replay viewer for the community 🏸 Whether you just hit your first 100pp play
There can be a waiting queue during peak hours; limited to the skins available on their server. 3. Danser (The Power-User Local Renderer)
An .osr file contains a wealth of data beyond just cursor movement and clicks. The official wiki breaks it down into specific fields. It stores variables like the game mode, the exact beatmap MD5 hash, your username, the number of 300s and 100s, your max combo, and which mods were used. However, the most critical data is the compressed replay information. This portion contains a timeline of your mouse movements and key presses, which is compressed using the LZMA algorithm and stored as a byte array. These technical specifications are why tools like osrparse for Python or Rust-based parsers are necessary to decode the data for analysis.
// draw all cursor trail (semi-transparent based on time) for (let i = 0; i < replayFrames.length; i++) const frame = replayFrames[i]; if (frame.timeMs > currentTime) continue; const alpha = 0.25 + (frame.timeMs / totalDuration) * 0.3; ctx.beginPath(); ctx.arc(frame.x, frame.y, 5, 0, Math.PI*2); ctx.fillStyle = `rgba(100, 180, 255, $Math.min(0.5, alpha*0.7))`; ctx.fill(); if (frame.click && frame.timeMs <= currentTime) ctx.beginPath(); ctx.arc(frame.x, frame.y, 12, 0, Math.PI*2); ctx.strokeStyle = '#ff6070'; ctx.lineWidth = 2.5; ctx.stroke(); ctx.beginPath(); ctx.arc(frame.x, frame.y, 5, 0, Math.PI*2); ctx.fillStyle = '#ff3366cc'; ctx.fill();
// find current interpolated cursor position let curX = canvas.width/2, curY = canvas.height/2; let isClickNow = false; if (replayFrames.length > 0) let prevFrame = null; for (let i = 0; i < replayFrames.length; i++) if (replayFrames[i].timeMs <= currentTime) prevFrame = replayFrames[i]; else break; Run the render command (e
function loadReplayData(framesArray, durationMs) 5000); if(totalDuration <= 0) totalDuration = 5000; timelineSlider.max = 100; setCurrentTime(0); recomputeStats(); syncUITime();
Zero impact on your computer's hardware; renders up to 1080p 60FPS; integrates directly with Discord.
The osu! replay viewer is more than a way to watch a cursor dance across a screen. It is a diagnostic lab for the dedicated, a cinema for the fans, and a courtroom for the skeptics. By capturing the fleeting movements of a high-speed performance, it ensures that every click is remembered and every achievement is earned.
input[type="range"]::-webkit-slider-thumb -webkit-appearance: none; width: 16px; height: 16px; background: #ffb347; border-radius: 50%; cursor: pointer; box-shadow: 0 0 6px #ffaa33; border: none;
The is more than just a way to admire your high scores. It is a diagnostic tool that bridges the gap between a "hardstuck" player and a top-tier performer. By regularly reviewing your missed notes and timing errors, you turn every failure into a lesson.