Question

我正在尝试使用websockets（确切地说是socket.io）和节点服务器将实时视频从我的rpi（任何linux机器）传输到我的笔记本电脑。以前有人这样做过，可以分享他们的设置吗？注意：我尝试了一堆剧照和流式传输，但它似乎是一个非常密集的任务，并且还会产生明显的延迟

Answer 1

您可以使用ffmpeg将视频流解码为hls格式。该解决方案在现实世界和显示视频之间有一点延迟（约3-10秒）。详见here（俄语）。

// index.html 
<!DOCTYPE html>
<html>
<head>
    <meta HTTP-EQUIV="Expires" CONTENT="0"> 
    <meta HTTP-EQUIV="Pragma" CONTENT="no-cache">
    <meta HTTP-EQUIV="Cache-Control" CONTENT="no-cache">
    <meta http-equiv="Cache-Control" content="no-cache, must-revalidate">
    <meta http-equiv="Cache-Control" content="private">
    <script src="https://cdn.jsdelivr.net/hls.js/latest/hls.min.js"></script>
</head>

<body>
    <video id="video"></video>
    <script>
    if(!Hls.isSupported()) 
        return console.error('HSL is not supported');

    var video = document.getElementById('video');
    var hls = new Hls();
    hls.loadSource('index1.m3u8');
    hls.attachMedia(video);
    hls.on(Hls.Events.MANIFEST_PARSED, function() {
        video.play();
    });
    </script>
</body>
</html>

// ffmpeg example (I use rstp stream)
ffmpeg -rtsp_transport tcp -loglevel error -hwaccel auto -i rtsp://184.72.239.149/vod/mp4:BigBuckBunny_175k1.mov -ar 44100 -acodec aac -ac 1 -strict -2 -crf 18 -c:v copy -preset ultrafast -flags -global_header -fflags flush_packets -tune zerolatency -hls_time 1 -hls_list_size 3 -hls_wrap 4 -hls_flags delete_segments -start_number 0 index1.m3u8

// http server (you can use any other)
var http = require('http');
var fs = require('fs');
var static = require('node-static');
var file = new static.Server('.', {cache: false });

http.createServer(function(req, res) {
  file.serve(req, res);
}).listen(1111);

console.log('Server running on 127.0.0.1:1111...');

通过websocket与节点流视频

1 个答案: