http://stackoverflow.com/questions/24976123/streaming-a-video-file-to-an-html5-video-player-with-node-js-so-that-the-video-c
项目地址 https://github.com/shenggen1987/mp4-demo
express index.jade
extends layoutblock contenth1= titlep Welcome to #{title}video(src="/video" controls="controls" type="video/mp4" width="320px" height="480px")
express routes/users.js
var express = require('express');
var router = express.Router();/* GET users listing. */
router.get('/', function(req, res, next) {//res.send('respond with a resource');var fs = require("fs") ;//var video = fs.createReadStream('./public/images/sina.mp4');//res.set('Content-Type', 'video/mp4');//video.pipe(res)var file = './public/images/sina.mp4';fs.stat(file, function(err, stats) {if (err) {if (err.code === 'ENOENT') {// 404 Error if file not foundreturn res.sendStatus(404);}res.end(err);}var range = req.headers.range;if (!range) {// 416 Wrong rangereturn res.sendStatus(416);}var positions = range.replace(/bytes=/, "").split("-");var start = parseInt(positions[0], 10);var total = stats.size;var end = positions[1] ? parseInt(positions[1], 10) : total - 1;var chunksize = (end - start) + 1;res.writeHead(206, {"Content-Range": "bytes " + start + "-" + end + "/" + total,"Accept-Ranges": "bytes","Content-Length": chunksize,"Content-Type": "video/mp4"});var stream = fs.createReadStream(file, { start: start, end: end }).on("open", function() {stream.pipe(res);}).on("error", function(err) {res.end(err);});});});module.exports = router;
