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Capture a thumbnail from a video with JavaScript.
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| <!DOCTYPE html> | |
| <head> | |
| <script type='text/javascript'> | |
| window.onload = function () { | |
| var video = document.getElementById('videoId'); | |
| var canvas = document.getElementById('canvasId'); | |
| var img = document.getElementById('imgId'); | |
| video.addEventListener('play', function () { | |
| canvas.style.display = 'none'; | |
| img.style.display = 'none'; | |
| }, false); | |
| video.addEventListener('pause', function () { | |
| canvas.style.display = 'block'; | |
| img.style.display = 'block'; | |
| draw(video, canvas, img); | |
| }, false); | |
| }; | |
| function draw(video, canvas, img) { | |
| var context = canvas.getContext('2d'); | |
| context.drawImage(video, 0, 0, canvas.width, canvas.height); | |
| var dataURL = canvas.toDataURL(); | |
| img.setAttribute('src', dataURL); | |
| } | |
| </script> | |
| </head> | |
| <body> | |
| <video id="videoId" autoplay loop controls> | |
| <source src="test.webm" type="video/webm"> | |
| <source src="test.mp4" type="video/mp4"> | |
| Your browser does not support the video tag. | |
| </video> | |
| <canvas id="canvasId"></canvas> | |
| <img id="imgId" src=""/> | |
| </body> |
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