[Bookmarklet] video要素からスクリーンショット取得

javascript:void((d => {let v,c,x,b,u,ci,a,i;v = d.querySelector('video');if(v) {c = d.createElement('canvas');c.width = v.videoWidth;c.height = v.videoHeight;x = c.getContext('2d');x.drawImage(v,0,0,c.width,c.height);c.toBlob(b => {navigator.clipboard.write([new ClipboardItem({[b.type]:b})]);u = URL.createObjectURL(b);ci = d.getElementById('clipboard-item');ci && ci.remove();ci = d.createElement('div');ci.id = 'clipboard-item';const C = 'position:fixed;top:20px;right:20px;z-index:1000000000;padding:12px;border-radius:4px;box-shadow:0 1px 4px 0 black;background:#333;transition:1s ease-in;opacity:';ci.style = C + '1';a = d.createElement('a');a.href = u;a.setAttribute('download','');a.target = '_blank';i = d.createElement('img');i.src = u;i.width = 300;a.appendChild(i);ci.appendChild(a);d.body.appendChild(ci);setTimeout(() => ci.style = C + '0',2000);setTimeout(() => ci.remove(),3000);});}})(document));