Last active
December 27, 2023 01:07
-
-
Save vitosamson/90b547a7fe0ac1c39da0 to your computer and use it in GitHub Desktop.
foscam streaming
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| <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> |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| 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'); | |
| }); |
@StefanRu1 since this gist is from a while ago, it's possible (likely) the version of ws you installed is newer and has a different api. I was using ws@0.8.0 at the time, if that helps.
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?
From https://github.com/websockets/ws#broadcast-example
Try changing clients.map to clients.forEach
It does work with that change.
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Hi,
i have a problem using server.js.
Error is:
`/home/pi/mjepgstream/server.js:17
wsServer.clients.map(client => {
^
TypeError: wsServer.clients.map is not a function
at Socket.ffmpeg.stdout.on.data (/home/pi/mjepgstream/server.js:17:20)
at emitOne (events.js:96:13)
at Socket.emit (events.js:189:7)
at readableAddChunk (_stream_readable.js:176:18)
at Socket.Readable.push (_stream_readable.js:134:10)
at Pipe.onread (net.js:551:20)
`
Is the node.js to new?
pi@raspberrypi:~/mjepgstream $ node -v
v7.6.0
Best regards,
Stefan