上傳完影片的時候取得裡面隨便一格當封面，有辦法做到沒？
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<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>capture screen</title> </head> <body> <video id="video" controls="controls"> <source src="123.MP4"> </video> <p id="output"></p> <script type="text/javascript"> (function(){ var video, output; var scale = 0.8; var initialize = function() { output = document.getElementById("output"); video = document.getElementById("video"); video.addEventListener('loadeddata',captureImage); }; var captureImage = function() { var canvas = document.createElement("canvas"); canvas.width = video.videoWidth * scale; canvas.height = video.videoHeight * scale; canvas.getContext('2d').drawImage(video, 0, 0, canvas.width, canvas.height); var img = document.createElement("img"); img.src = canvas.toDataURL("image/png"); output.appendChild(img); }; initialize(); })(); </script> </body> </html>
也是在這裡找到的。你試試
canvas.getContext('2d').drawImage(video, 0，0，canvas.width,canvas.height),利用上面的方法可以過去影片的一幀參考https://developer.mozilla.org.. .
也是在這裡找到的。你試試
canvas.getContext('2d').drawImage(video,
0，0，canvas.width,canvas.height),利用上面的方法可以過去影片的一幀參考https://developer.mozilla.org.. .