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February 12, 2020 20:45
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Save dwighthouse/fbc175803d439a68e274bc3b666f7421 to your computer and use it in GitHub Desktop.
Download YouTube Screenshot by running this in the console
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| (() => { | |
| const youtubeVideoSelector = 'video'; | |
| const video = document.querySelector(youtubeVideoSelector); | |
| const width = video.videoWidth; | |
| const height = video.videoHeight; | |
| const canvas = document.createElement('canvas'); | |
| const context = canvas.getContext('2d'); | |
| canvas.width = width; | |
| canvas.height = height; | |
| context.fillRect(0, 0, width, height); | |
| context.drawImage(video, 0, 0, width, height); | |
| canvas.toBlob((blob) => { | |
| const a = document.createElement('a'); | |
| a.href = URL.createObjectURL(blob); | |
| // Take advantage of known US English format | |
| const parts = new Intl.DateTimeFormat('en-us', { | |
| year: 'numeric', | |
| month: '2-digit', | |
| day: '2-digit', | |
| }).formatToParts(new Date()); | |
| a.download = `YouTube-Screenshot_${parts[4].value}-${parts[0].value}-${parts[2].value}`; | |
| a.click(); | |
| setTimeout(() => { | |
| URL.revokeObjectURL(a.href); | |
| }, 1000); | |
| }); | |
| })(); |
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