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neopunisher/youtube-screencap.js

Created May 25, 2018 05:30
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take high quality screen stills from youtube with a button
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youtube-screencap.js
(function(a){var b=a.createElement("button");b.innerText="Screencap";b.onclick=function(){var d=a.querySelector("video"),e=a.createElement("canvas"),b=e.getContext("2d"),c=a.createElement("a");e.width=d.videoWidth;e.height=d.videoHeight;b.drawImage(d,0,0);c.download=[ytcsi.data_.info.docid,d.currentTime,".png"].join("-");c.href=e.toDataURL();a.body.appendChild(c);c.click();a.body.removeChild(c)};a.querySelector("h1.title").appendChild(b)})(document);
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