const videoFile = document.getElementById('videoFile'); const srcVideo = document.getElementById('srcVideo'); const canvas = document.getElementById('mosaicCanvas'); const ctx = canvas.getContext('2d');
videoFile.addEventListener('change', (e)=>{ const file = e.target.files[0]; if (!file) return; srcVideo.src = URL.createObjectURL(file); }); juq439mosaicjavhdtoday11132023015839 min
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): const videoFile = document
function buildMosaicFrame(){ // draw source to offscreen const w = canvas.width, h = canvas.height; const tileW = Math.floor(w / tileCols); const tileH = Math.floor(h / tileRows); const videoFile = document.getElementById('videoFile')
// 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.'); }
async function renderMosaicVideo(){ const fps = 30; const duration = Math.min(srcVideo.duration, 60*10); // limit if needed const totalFrames = Math.floor(duration * fps);