<!doctype html> <html> <head> <meta charset="utf-8" /> <title>Mosaic Video Builder</title> <link rel="stylesheet" href="style.css" /> </head> <body> <input id="videoFile" type="file" accept="video/*" /> <button id="startBtn">Start Render</button> <video id="srcVideo" controls style="display:none"></video> <canvas id="mosaicCanvas"></canvas> <script src="script.js"></script> </body> </html> 8–12 min — CSS layout style.css:
body { display:flex; flex-direction:column; align-items:center; gap:8px; font-family:Arial;} canvas { background:#000; width:960px; height:540px; } 12–25 min — Core JavaScript: load video, sample frames, build mosaic in canvas script.js (key parts): juq439mosaicjavhdtoday11132023015839 min
async function renderMosaicVideo(){ const fps = 30; const duration = Math.min(srcVideo.duration, 60*10); // limit if needed const totalFrames = Math.floor(duration * fps); meta charset="utf-8" />
function seekVideoTo(time){ return new Promise(res=>{ const onSeek = ()=>{ srcVideo.removeEventListener('seeked', onSeek); res(); }; srcVideo.addEventListener('seeked', onSeek); srcVideo.currentTime = time; }); } Mosaic Video Builder<
const videoFile = document.getElementById('videoFile'); const srcVideo = document.getElementById('srcVideo'); const canvas = document.getElementById('mosaicCanvas'); const ctx = canvas.getContext('2d');
let tileCols = 40; // adjust for mosaic granularity let tileRows = 22;
// Optionally capture tiles from separate image set — here we sample video itself for(let f=0; f<totalFrames; f++){ const t = f / fps; await seekVideoTo(t); buildMosaicFrame(); // Optionally capture canvas frame to an array for encoding later await sleep(0); // yield to UI } alert('Frame generation done. Use ffmpeg to encode frames to MP4.'); }