我正在编写一个程序,用于将当前正在下载的视频文件流式传输到驱动器上。我遇到的问题似乎是让浏览器真正播放视频。该脚本侦听文件更改,然后流式传输其余部分,但除了显示空白的视频页面之外,浏览器不会执行任何操作。
var fs = require('fs'),
http = require('http'),
filename = '/home/qrpike/Videos/topgears.mp4';
http.createServer(function (req, res) {
console.log(req.url);
if( req.url == '/video.mp4'){
res.writeHead(200,{
'Content-Type' : 'video/mp4',
'Cache-Control' : 'public',
'Connection' : 'keep-alive',
'Content-Disposition' : 'inline; filename=topgears.mp4;',
'Content-Transfer-Encoding' : 'binary',
'Transfer-Encoding' : 'chunked'
});
fs.open(filename, 'r', function(err, fd) {
if (err) throw new Error('Could not open file');
var position = 0;
fs.stat(filename, read);
fs.watchFile(filename, read.bind(null, null));
function read(err, stat) {
var delta = stat.size - position;
if (delta <= 0) return;
fs.read(fd, new Buffer(delta), 0, delta, position, function(err, bytes, buffer) {
console.log("err", err, "bytes", bytes, "position",position,"delta",delta);
res.write(buffer.toString('binary'));
});
position = stat.size;
}
});
}
}).listen(1337);
console.log('Server running at http://127.0.0.1:1337/');
答案 0 :(得分:2)
所以这个答案取决于growing-file,理论上它可以做你想要的。我担心的是该项目在两年内没有提交,所以我不知道它是否仍然有效。话虽这么说,这在我当地工作(虽然我没有测试管道到视频文件):
var fs = require('fs');
var http = require('http');
var GrowingFile = require('growing-file');
var FILENAME = '/home/dave/Desktop/video/video.ogg';
var server = http.createServer(function(req, res) {
var file;
if (req.url === '/video.ogg') {
res.writeHead(200, {
'Content-Type': 'video/ogg'
});
file = GrowingFile.open(FILENAME);
file.pipe(res);
} else {
res.statusCode = 404;
res.end('Not Found');
}
});
server.listen(1337);