TL；DR-问题:
What is the right way to handle streaming a video file to an html5 video player with Node.js so that the video controls continue to work?个
I think这与处理报头的方式有关.不管怎样，这是背景资料.代码很长，但是非常简单.
使用Node将小视频文件流式传输到HTML5视频很容易
I learned how to stream small video files to an HTML5 video player very easily.在这种设置下，控件可以在我不做任何工作的情况下工作，视频流也可以完美无瑕.带有示例视频的完整工作代码的工作副本是here, for download on Google Docs.
Client:个
<html>
<title>Welcome</title>
<body>
<video controls>
<source src="movie.mp4" type="video/mp4"/>
<source src="movie.webm" type="video/webm"/>
<source src="movie.ogg" type="video/ogg"/>
<!-- fallback -->
Your browser does not support the <code>video</code> element.
</video>
</body>
</html>
Server:个
// Declare Vars & Read Files
var fs = require('fs'),
http = require('http'),
url = require('url'),
path = require('path');
var movie_webm, movie_mp4, movie_ogg;
// ... [snip] ... (Read index page)
fs.readFile(path.resolve(__dirname,"movie.mp4"), function (err, data) {
if (err) {
throw err;
}
movie_mp4 = data;
});
// ... [snip] ... (Read two other formats for the video)
// Serve & Stream Video
http.createServer(function (req, res) {
// ... [snip] ... (Serve client files)
var total;
if (reqResource == "/movie.mp4") {
total = movie_mp4.length;
}
// ... [snip] ... handle two other formats for the video
var range = req.headers.range;
var positions = range.replace(/bytes=/, "").split("-");
var start = parseInt(positions[0], 10);
var end = positions[1] ? parseInt(positions[1], 10) : total - 1;
var chunksize = (end - start) + 1;
if (reqResource == "/movie.mp4") {
res.writeHead(206, {
"Content-Range": "bytes " + start + "-" + end + "/" + total,
"Accept-Ranges": "bytes",
"Content-Length": chunksize,
"Content-Type": "video/mp4"
});
res.end(movie_mp4.slice(start, end + 1), "binary");
}
// ... [snip] ... handle two other formats for the video
}).listen(8888);
但此方法仅限于大小为<；1 GB的文件.
Streaming (any size) video files with fs.createReadStream
通过使用fs.createReadStream()，服务器可以读取流中的文件，而不是一次将其全部读入内存.这听起来是正确的做法，语法非常简单:
Server Snippet:
movieStream = fs.createReadStream(pathToFile);
movieStream.on('open', function () {
res.writeHead(206, {
"Content-Range": "bytes " + start + "-" + end + "/" + total,
"Accept-Ranges": "bytes",
"Content-Length": chunksize,
"Content-Type": "video/mp4"
});
// This just pipes the read stream to the response object (which goes
//to the client)
movieStream.pipe(res);
});
movieStream.on('error', function (err) {
res.end(err);
});
这个视频流很好！但视频控制不再起作用.