我正在尝试将 webm 视频文件流式传输到客户端。
第一个块(大约 4466 字节长)“工作”(使用 appendBuffer),因为我可以看到<video>
调整到视频分辨率的大小。
这是我第三次附加后得到的错误:
Uncaught InvalidStateError: An attempt was made to use an object that is not, or is no longer, usable.
的属性有这个错误SourceBuffer
:buffered
[Exception: DOMException]
这是客户端代码:
var client = new BinaryClient('ws://127.0.0.1:3080/binary-endpoint');
var ms = new MediaSource();
var sourceBuffer;
var video = document.querySelector('video');
var needUpdate = true;
var paused = true;
var busy = false;
var initial = true;
ms.addEventListener('sourceopen', function(e) {
console.log('The MediaSource has been opened: ', e)
sourceBuffer = ms.addSourceBuffer('video/webm; codecs="vorbis,vp8"');
ms.duration = 1000;
sourceBuffer.addEventListener('updatestart', function(e) {
busy = true;
});
sourceBuffer.addEventListener('updateend', function(e) {
console.log(e);
busy = false;
});
sourceBuffer.addEventListener('update', function(e) {
console.log('Update succeeded', e)
});
console.log('The SourceBuffer has been created', sourceBuffer);
}, false);
client.on('stream', function(stream, meta){
stream.on('data', function(data) {
var DATA = new Uint8Array(data);
if (needUpdate && !busy) {
sourceBuffer.appendBuffer(DATA);
}
if (!initial && paused) {
video.play();
paused = false;
}
initial = false;
});
});
video.src = window.URL.createObjectURL(ms);