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我正在嘗試使用javascript mediasource播放視頻以隱藏用戶的視頻網址。但我得到一個錯誤，因爲Javascript mediaSource元素
未捕獲InvalidStateError：未能在'MediaSource'上執行'endOfStream'：MediaSource的readyState不是'open'。如果要動態傳遞視頻類型和代碼，這也會很有幫助。
下面是我的代碼，
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"/>
</head>
<body>
<video controls></video>
<script>
var video = document.querySelector('video');
var assetURL = 'adsss.mp4';
// Need to be specific for Blink regarding codecs
// ./mp4info frag_bunny.mp4 | grep Codec
var mimeCodec = 'video/mp4; codecs="avc1.42E01E, mp4a.40.2"';
if ('MediaSource' in window && MediaSource.isTypeSupported(mimeCodec)) {
var mediaSource = new MediaSource;
//console.log(mediaSource.readyState); // closed
video.src = URL.createObjectURL(mediaSource);
mediaSource.addEventListener('sourceopen', sourceOpen);
} else {
console.error('Unsupported MIME type or codec: ', mimeCodec);
}
function sourceOpen (_) {
console.log(this.readyState); // open
var mediaSource = this;
console.log(mediaSource);
var sourceBuffer = mediaSource.addSourceBuffer(mimeCodec);
console.log(sourceBuffer);
fetchAB(assetURL, function (buf) {
sourceBuffer.addEventListener('updateend', function (_) {
mediaSource.endOfStream();
video.play();
console.log(mediaSource.readyState); // ended
});
sourceBuffer.appendBuffer(buf);
});
};
function fetchAB (url, cb) {
console.log(url);
var xhr = new XMLHttpRequest;
xhr.open('get', url);
console.log(xhr);
xhr.responseType = 'arraybuffer';
xhr.onload = function() {
cb(xhr.response);
console.log(xhr.response);
};
xhr.send();
};
</script>