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December 27, 2023 01:07
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foscam streaming
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| <canvas height="720" width="1280" id="canvas"></canvas> | |
| <button id="snapshotBtn">snapshot</button> | |
| <script> | |
| var fragments = []; | |
| var frames = []; | |
| var ws = new WebSocket('ws://192.168.1.3:4001'); | |
| var canvas = document.getElementById('canvas'); | |
| var ctx = canvas.getContext('2d'); | |
| var reader = new FileReader(); | |
| ws.binaryType = 'arraybuffer'; | |
| ws.onmessage = function(data) { | |
| fragments.push(data.data); | |
| if ( | |
| fragments.length > 2 && | |
| data.data.byteLength !== fragments[fragments.length - 2].byteLength | |
| ) { | |
| draw(); | |
| fragments = []; | |
| } | |
| } | |
| reader.onload = function(e) { | |
| var image = new Image(); | |
| image.src = e.target.result; | |
| image.onload = function() { | |
| try { | |
| ctx.drawImage(image, 0, 0); | |
| } catch(e) { | |
| console.log('bad image'); | |
| } | |
| } | |
| } | |
| function draw() { | |
| var bytes = fragments.map(function(f) { return new Uint8Array(f).buffer; }); | |
| var blob = new Blob(bytes, { type: 'image/jpg' }); | |
| frames.push(blob); | |
| reader.readAsDataURL(blob); | |
| } | |
| var snapshotBtn = document.getElementById('snapshotBtn'); | |
| snapshotBtn.addEventListener('click', function() { | |
| var a = document.createElement('a'); | |
| var lastFrame = frames[frames.length - 1]; | |
| var url = window.URL.createObjectURL(lastFrame); | |
| a.href = url; | |
| a.download = 'snapshot.jpg'; | |
| a.style.display = 'none'; | |
| document.body.appendChild(a); | |
| a.click(); | |
| }); | |
| </script> |
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| const ws = require('ws'); | |
| const child_process = require('child_process'); | |
| const wsServer = new ws.Server({ | |
| port: 4001, | |
| }); | |
| const ffmpeg = child_process.spawn('ffmpeg', [ | |
| '-i', 'rtsp://user:pass@192.168.1.200:88/videoMain', | |
| '-f', 'image2pipe', | |
| '-vf', 'fps=1', | |
| '-qscale:v', '2', | |
| '-', | |
| ], { detached: false }); | |
| ffmpeg.stdout.on('data', data => { | |
| wsServer.clients.map(client => { | |
| client.send(data, { binary: true }); | |
| }); | |
| }); | |
| ffmpeg.stderr.on('data', data => { | |
| console.log(data.toString()); | |
| }); | |
| ffmpeg.on('error', e => { | |
| console.log(e); | |
| }); | |
| wsServer.on('connection', () => { | |
| console.log('new connection'); | |
| }); |
From https://github.com/websockets/ws#broadcast-example
Try changing clients.map to clients.forEach
It does work with that change.
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Ok, thank you very much. I will try to use a older ws version. Did you find an other solution for rstp streaming to html?