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Autres articles (55)
-
Multilang : améliorer l’interface pour les blocs multilingues
18 février 2011, parMultilang est un plugin supplémentaire qui n’est pas activé par défaut lors de l’initialisation de MediaSPIP.
Après son activation, une préconfiguration est mise en place automatiquement par MediaSPIP init permettant à la nouvelle fonctionnalité d’être automatiquement opérationnelle. Il n’est donc pas obligatoire de passer par une étape de configuration pour cela. -
Ajouter des informations spécifiques aux utilisateurs et autres modifications de comportement liées aux auteurs
12 avril 2011, parLa manière la plus simple d’ajouter des informations aux auteurs est d’installer le plugin Inscription3. Il permet également de modifier certains comportements liés aux utilisateurs (référez-vous à sa documentation pour plus d’informations).
Il est également possible d’ajouter des champs aux auteurs en installant les plugins champs extras 2 et Interface pour champs extras. -
Support audio et vidéo HTML5
10 avril 2011MediaSPIP utilise les balises HTML5 video et audio pour la lecture de documents multimedia en profitant des dernières innovations du W3C supportées par les navigateurs modernes.
Pour les navigateurs plus anciens, le lecteur flash Flowplayer est utilisé.
Le lecteur HTML5 utilisé a été spécifiquement créé pour MediaSPIP : il est complètement modifiable graphiquement pour correspondre à un thème choisi.
Ces technologies permettent de distribuer vidéo et son à la fois sur des ordinateurs conventionnels (...)
Sur d’autres sites (10458)
-
Convert Webrtc track stream to URL (RTSP/UDP/RTP/Http) in Video tag
19 juillet 2020, par Zeeshan YounisI am new in WebRTC and i have done client/server connection, from client i choose WebCam and post stream to server using Track and on Server side i am getting that track and assign track stream to video source. Everything till now fine but problem is now i include AI(Artificial Intelligence) and now i want to convert my track stream to URL maybe UDP/RTSP/RTP etc. So AI will use that URL for object detection. I don't know how we can convert track stream to URL.
Although there is a couple of packages like https://ffmpeg.org/ and RTP to Webrtc etc, i am using Nodejs, Socket.io and Webrtc, below you can check my client and server side code for getting and posting stream, i am following thi github code https://github.com/Basscord/webrtc-video-broadcast.
Now my main concern is to make track as a URL for video tag, is it possible or not or please suggest, any help would be appreciated.


Server.js


This is nodejs server code



const express = require("express");
const app = express();

let broadcaster;
const port = 4000;

const http = require("http");
const server = http.createServer(app);

const io = require("socket.io")(server);
app.use(express.static(__dirname + "/public"));

io.sockets.on("error", e => console.log(e));
io.sockets.on("connection", socket => {
 socket.on("broadcaster", () => {
 broadcaster = socket.id;
 socket.broadcast.emit("broadcaster");
 });
 socket.on("watcher", () => {
 socket.to(broadcaster).emit("watcher", socket.id);
 });
 socket.on("offer", (id, message) => {
 socket.to(id).emit("offer", socket.id, message);
 });
 socket.on("answer", (id, message) => {
 socket.to(id).emit("answer", socket.id, message);
 });
 socket.on("candidate", (id, message) => {
 socket.to(id).emit("candidate", socket.id, message);
 });
 socket.on("disconnect", () => {
 socket.to(broadcaster).emit("disconnectPeer", socket.id);
 });
});
server.listen(port, () => console.log(`Server is running on port ${port}`));






Broadcast.js
This is the code for emit stream(track)



const peerConnections = {};
const config = {
 iceServers: [
 {
 urls: ["stun:stun.l.google.com:19302"]
 }
 ]
};

const socket = io.connect(window.location.origin);

socket.on("answer", (id, description) => {
 peerConnections[id].setRemoteDescription(description);
});

socket.on("watcher", id => {
 const peerConnection = new RTCPeerConnection(config);
 peerConnections[id] = peerConnection;

 let stream = videoElement.srcObject;
 stream.getTracks().forEach(track => peerConnection.addTrack(track, stream));

 peerConnection.onicecandidate = event => {
 if (event.candidate) {
 socket.emit("candidate", id, event.candidate);
 }
 };

 peerConnection
 .createOffer()
 .then(sdp => peerConnection.setLocalDescription(sdp))
 .then(() => {
 socket.emit("offer", id, peerConnection.localDescription);
 });
});

socket.on("candidate", (id, candidate) => {
 peerConnections[id].addIceCandidate(new RTCIceCandidate(candidate));
});

socket.on("disconnectPeer", id => {
 peerConnections[id].close();
 delete peerConnections[id];
});

window.onunload = window.onbeforeunload = () => {
 socket.close();
};

// Get camera and microphone
const videoElement = document.querySelector("video");
const audioSelect = document.querySelector("select#audioSource");
const videoSelect = document.querySelector("select#videoSource");

audioSelect.onchange = getStream;
videoSelect.onchange = getStream;

getStream()
 .then(getDevices)
 .then(gotDevices);

function getDevices() {
 return navigator.mediaDevices.enumerateDevices();
}

function gotDevices(deviceInfos) {
 window.deviceInfos = deviceInfos;
 for (const deviceInfo of deviceInfos) {
 const option = document.createElement("option");
 option.value = deviceInfo.deviceId;
 if (deviceInfo.kind === "audioinput") {
 option.text = deviceInfo.label || `Microphone ${audioSelect.length + 1}`;
 audioSelect.appendChild(option);
 } else if (deviceInfo.kind === "videoinput") {
 option.text = deviceInfo.label || `Camera ${videoSelect.length + 1}`;
 videoSelect.appendChild(option);
 }
 }
}

function getStream() {
 if (window.stream) {
 window.stream.getTracks().forEach(track => {
 track.stop();
 });
 }
 const audioSource = audioSelect.value;
 const videoSource = videoSelect.value;
 const constraints = {
 audio: { deviceId: audioSource ? { exact: audioSource } : undefined },
 video: { deviceId: videoSource ? { exact: videoSource } : undefined }
 };
 return navigator.mediaDevices
 .getUserMedia(constraints)
 .then(gotStream)
 .catch(handleError);
}

function gotStream(stream) {
 window.stream = stream;
 audioSelect.selectedIndex = [...audioSelect.options].findIndex(
 option => option.text === stream.getAudioTracks()[0].label
 );
 videoSelect.selectedIndex = [...videoSelect.options].findIndex(
 option => option.text === stream.getVideoTracks()[0].label
 );
 videoElement.srcObject = stream;
 socket.emit("broadcaster");
}

function handleError(error) {
 console.error("Error: ", error);
}






RemoteServer.js
This code is getting track and assign to video tag



let peerConnection;
const config = {
 iceServers: [
 {
 urls: ["stun:stun.l.google.com:19302"]
 }
 ]
};

const socket = io.connect(window.location.origin);
const video = document.querySelector("video");

socket.on("offer", (id, description) => {
 peerConnection = new RTCPeerConnection(config);
 peerConnection
 .setRemoteDescription(description)
 .then(() => peerConnection.createAnswer())
 .then(sdp => peerConnection.setLocalDescription(sdp))
 .then(() => {
 socket.emit("answer", id, peerConnection.localDescription);
 });
 peerConnection.ontrack = event => {
 video.srcObject = event.streams[0];
 };
 peerConnection.onicecandidate = event => {
 if (event.candidate) {
 socket.emit("candidate", id, event.candidate);
 }
 };
});

socket.on("candidate", (id, candidate) => {
 peerConnection
 .addIceCandidate(new RTCIceCandidate(candidate))
 .catch(e => console.error(e));
});

socket.on("connect", () => {
 socket.emit("watcher");
});

socket.on("broadcaster", () => {
 socket.emit("watcher");
});

socket.on("disconnectPeer", () => {
 peerConnection.close();
});

window.onunload = window.onbeforeunload = () => {
 socket.close();
};






-
Permissions issue with Python and ffmpeg on a Mac
13 avril 2020, par EventHorizonI am fairly new to Python ( 4 weeks), and I have been struggling with this all day.



I am using MacOS 10.13, Python 3.7 via Anaconda Navigator 1.9.12 and Spyder 4.0.1.



Somehow (only a noob, remember) I had 2 Anaconda environments. I don't do production code, just research, so I figured I would make life simple and just use the base environment. I deleted the other environment.



I had previously got FFmpeg working and was able to do frame grabs, build mpeg animations, and convert them to gifs for blog posts and such. I had FFmpeg installed in the directories associated with the deleted environment, so it went away.



No worries, I got the git URL, used Terminal to install it in /opt/anaconda3/bin. It's all there and I can run FFmpeg from the Terminal.



My problem : When I attempt to run a module that previously worked fine, I get the following message :



[Errno 13] Permission denied : '/opt/anaconda3/bin/ffmpeg'



In my module I set the default location of FFmpeg : plt.rcParams['animation.ffmpeg_path'] = '/opt/anaconda3/bin/ffmpeg'



In my module I have the following lines :



writer = animation.FFMpegWriter(fps=frameRate, metadata=metadata)
writer.setup(fig, "animation.mp4", 100)



This calls matplotlib's 'animation.py', which runs the following :



def setup(self, fig, outfile, dpi=None):
 '''
 Perform setup for writing the movie file.

 Parameters
 ----------
 fig : `~matplotlib.figure.Figure`
 The figure object that contains the information for frames
 outfile : str
 The filename of the resulting movie file
 dpi : int, optional
 The DPI (or resolution) for the file. This controls the size
 in pixels of the resulting movie file. Default is fig.dpi.
 '''
 self.outfile = outfile
 self.fig = fig
 if dpi is None:
 dpi = self.fig.dpi
 self.dpi = dpi
 self._w, self._h = self._adjust_frame_size()

 # Run here so that grab_frame() can write the data to a pipe. This
 # eliminates the need for temp files.
 self._run()

def _run(self):
 # Uses subprocess to call the program for assembling frames into a
 # movie file. *args* returns the sequence of command line arguments
 # from a few configuration options.
 command = self._args()
 _log.info('MovieWriter.run: running command: %s', command)
 PIPE = subprocess.PIPE
 self._proc = subprocess.Popen(
 command, stdin=PIPE, stdout=PIPE, stderr=PIPE,
 creationflags=subprocess_creation_flags)



Everything works fine up to the last line (i.e. 'command' looks like a well-formatted FFmpeg command line, PIPE returns -1) but subprocess.Popen() bombs out with the error message above.



I have tried changing file permissions - taking a sledgehammer approach and setting everything in /opt/anaconda3/bin/ffmpeg to 777, read, write, and execute. But that doesn't seem to make any difference. I really am clueless when it comes to Apple's OS, file permissions, etc. Any suggestions ?


-
Converting a voice recording into an mp3
21 juillet 2023, par Raphael MFor a vue.js messaging project, I'm using the wavesurfer.js library to record voice messages. However Google chrome gives me an audio/webm blob and Safari gives me an audio/mp4 blob.


I'm trying to find a solution to transcode the blob into audio/mp3. I've tried several methods, including ffmpeg. However, ffmpeg gives me an error when compiling "npm run dev" : "Can't resolve '/node_modules/@ffmpeg/core/dist/ffmpeg-core.js'".


"@ffmpeg/core": "^0.11.0",
"@ffmpeg/ffmpeg": "^0.11.6"


I tried to downgrade ffmpeg


"@ffmpeg/core": "^0.9.0",
"@ffmpeg/ffmpeg": "^0.9.8"


I no longer get the error message when compiling, but when I want to convert my audio stream, the console displays a problem with SharedBuffer : "Uncaught (in promise) ReferenceError : SharedArrayBuffer is not defined".


Here's my complete code below.
Is there a reliable way of transcoding the audio stream into mp3 ?


Can you give me an example ?


Thanks


<template>
 <div class="left-panel">
 <header class="radial-blue">
 <div class="container">
 <h1 class="mb-30">Posez votre première question à nos thérapeutes</h1>
 <p><b>Attention</b>, vous disposez seulement de 2 messages. Veillez à les utiliser de manière judicieuse !</p>
 <div class="available-messages">
 <div class="item disabled">
 <span>Message 1</span>
 </div>
 <div class="item">
 <span>Message 2</span>
 </div>
 </div>
 </div>
 </header>
 </div>
 <div class="right-panel">
 <div class="messagerie bg-light">
 <messaging ref="messagingComponent"></messaging>
 <footer>
 <button type="button"><img src="http://stackoverflow.com/assets/backoffice/images/record-start.svg" style='max-width: 300px; max-height: 300px' /></button>
 <div class="loading-animation">
 <img src="http://stackoverflow.com/assets/backoffice/images/record-loading.svg" style='max-width: 300px; max-height: 300px' />
 </div>
 <button type="button"><img src="http://stackoverflow.com/assets/backoffice/images/record-stop.svg" style='max-width: 300px; max-height: 300px' /></button>
 <div class="textarea gradient text-dark">
 <textarea placeholder="Posez votre question"></textarea>
 </div>
 <div class="loading-text">Chargement de votre microphone en cours...</div>
 <div class="loading-text">Envoi de votre message en cours...</div>
 <div ref="visualizer"></div>
 <button type="button"><img src="http://stackoverflow.com/assets/backoffice/images/send.svg" style='max-width: 300px; max-height: 300px' /></button>
 <div>
 {{ formatTimer() }}
 </div>
 </footer>
 </div>
 </div>
</template>

<code class="echappe-js"><script>&#xA;import Messaging from "./Messaging.vue";&#xA;import { createFFmpeg, fetchFile } from &#x27;@ffmpeg/ffmpeg&#x27;;&#xA;&#xA;export default {&#xA; data() {&#xA; return {&#xA; isMicrophoneLoading: false,&#xA; isSubmitLoading: false,&#xA; isMobile: false,&#xA; isMessagerie: false,&#xA; isRecording: false,&#xA; audioUrl: &#x27;&#x27;,&#xA; messageText: &#x27;&#x27;,&#xA; message:null,&#xA; wavesurfer: null,&#xA; access:(this.isMobile?&#x27;denied&#x27;:&#x27;granted&#x27;),&#xA; maxMinutes: 5,&#xA; orangeTimer: 3,&#xA; redTimer: 4,&#xA; timer: 0,&#xA; timerInterval: null,&#xA; ffmpeg: null,&#xA; };&#xA; },&#xA; components: {&#xA; Messaging,&#xA; },&#xA; mounted() {&#xA; this.checkScreenSize();&#xA; window.addEventListener(&#x27;resize&#x27;, this.checkScreenSize);&#xA;&#xA; if(!this.isMobile)&#xA; {&#xA; this.$moment.locale(&#x27;fr&#x27;);&#xA; window.addEventListener(&#x27;beforeunload&#x27;, (event) => {&#xA; if (this.isMessagerie) {&#xA; event.preventDefault();&#xA; event.returnValue = &#x27;&#x27;;&#xA; }&#xA; });&#xA;&#xA; this.initializeWaveSurfer();&#xA; }&#xA; },&#xA; beforeUnmount() {&#xA; window.removeEventListener(&#x27;resize&#x27;, this.checkScreenSize);&#xA; },&#xA; methods: {&#xA; checkScreenSize() {&#xA; this.isMobile = window.innerWidth < 1200;&#xA;&#xA; const windowHeight = window.innerHeight;&#xA; const navbarHeight = this.$navbarHeight;&#xA; let padding = parseInt(navbarHeight &#x2B;181);&#xA;&#xA; const messageListHeight = windowHeight - padding;&#xA; this.$refs.messagingComponent.$refs.messageList.style.height = messageListHeight &#x2B; &#x27;px&#x27;;&#xA; },&#xA; showMessagerie() {&#xA; this.isMessagerie = true;&#xA; this.$refs.messagingComponent.scrollToBottom();&#xA; },&#xA; checkMicrophoneAccess() {&#xA; if (navigator.mediaDevices &amp;&amp; navigator.mediaDevices.getUserMedia) {&#xA;&#xA; return navigator.mediaDevices.getUserMedia({audio: true})&#xA; .then(function (stream) {&#xA; stream.getTracks().forEach(function (track) {&#xA; track.stop();&#xA; });&#xA; return true;&#xA; })&#xA; .catch(function (error) {&#xA; console.error(&#x27;Erreur lors de la demande d\&#x27;acc&#xE8;s au microphone:&#x27;, error);&#xA; return false;&#xA; });&#xA; } else {&#xA; console.error(&#x27;getUserMedia n\&#x27;est pas support&#xE9; par votre navigateur.&#x27;);&#xA; return false;&#xA; }&#xA; },&#xA; initializeWaveSurfer() {&#xA; this.wavesurfer = this.$wavesurfer.create({&#xA; container: &#x27;#visualizer&#x27;,&#xA; barWidth: 3,&#xA; barHeight: 1.5,&#xA; height: 46,&#xA; responsive: true,&#xA; waveColor: &#x27;rgba(108,115,202,0.3)&#x27;,&#xA; progressColor: &#x27;rgba(108,115,202,1)&#x27;,&#xA; cursorColor: &#x27;transparent&#x27;&#xA; });&#xA;&#xA; this.record = this.wavesurfer.registerPlugin(this.$recordPlugin.create());&#xA; },&#xA; startRecording() {&#xA; const _this = this;&#xA; this.isMicrophoneLoading = true;&#xA;&#xA; setTimeout(() =>&#xA; {&#xA; _this.checkMicrophoneAccess().then(function (accessible)&#xA; {&#xA; if (accessible) {&#xA; _this.record.startRecording();&#xA;&#xA; _this.record.once(&#x27;startRecording&#x27;, () => {&#xA; _this.isMicrophoneLoading = false;&#xA; _this.isRecording = true;&#xA; _this.updateChildMessage( &#x27;server&#x27;, &#x27;Allez-y ! Vous pouvez enregistrer votre message audio maintenant. La dur&#xE9;e maximale autoris&#xE9;e pour votre enregistrement est de 5 minutes.&#x27;, &#x27;text&#x27;, &#x27;&#x27;, &#x27;Message automatique&#x27;);&#xA; _this.startTimer();&#xA; });&#xA; } else {&#xA; _this.isRecording = false;&#xA; _this.isMicrophoneLoading = false;&#xA; _this.$swal.fire({&#xA; title: &#x27;Microphone non d&#xE9;tect&#xE9;&#x27;,&#xA; html: &#x27;<p>Le microphone de votre appareil est inaccessible ou l\&#x27;acc&#xE8;s a &#xE9;t&#xE9; refus&#xE9;.</p><p>Merci de v&#xE9;rifier les param&#xE8;tres de votre navigateur afin de v&#xE9;rifier les autorisations de votre microphone.</p>&#x27;,&#xA; footer: &#x27;<a href='http://stackoverflow.com/contact'>Vous avez besoin d\&#x27;aide ?</a>&#x27;,&#xA; });&#xA; }&#xA; });&#xA; }, 100);&#xA; },&#xA; stopRecording() {&#xA; this.stopTimer();&#xA; this.isRecording = false;&#xA; this.isSubmitLoading = true;&#xA; this.record.stopRecording();&#xA;&#xA; this.record.once(&#x27;stopRecording&#x27;, () => {&#xA; const blobUrl = this.record.getRecordedUrl();&#xA; fetch(blobUrl).then(response => response.blob()).then(blob => {&#xA; this.uploadAudio(blob);&#xA; });&#xA; });&#xA; },&#xA; startTimer() {&#xA; this.timerInterval = setInterval(() => {&#xA; this.timer&#x2B;&#x2B;;&#xA; if (this.timer === this.maxMinutes * 60) {&#xA; this.stopRecording();&#xA; }&#xA; }, 1000);&#xA; },&#xA; stopTimer() {&#xA; clearInterval(this.timerInterval);&#xA; this.timer = 0;&#xA; },&#xA; formatTimer() {&#xA; const minutes = Math.floor(this.timer / 60);&#xA; const seconds = this.timer % 60;&#xA; const formattedMinutes = minutes < 10 ? `0${minutes}` : minutes;&#xA; const formattedSeconds = seconds < 10 ? `0${seconds}` : seconds;&#xA; return `${formattedMinutes}:${formattedSeconds}`;&#xA; },&#xA; async uploadAudio(blob)&#xA; {&#xA; const format = blob.type === &#x27;audio/webm&#x27; ? &#x27;webm&#x27; : &#x27;mp4&#x27;;&#xA;&#xA; // Convert the blob to MP3&#xA; const mp3Blob = await this.convertToMp3(blob, format);&#xA;&#xA; const s3 = new this.$AWS.S3({&#xA; accessKeyId: &#x27;xxx&#x27;,&#xA; secretAccessKey: &#x27;xxx&#x27;,&#xA; region: &#x27;eu-west-1&#x27;&#xA; });&#xA;&#xA; var currentDate = new Date();&#xA; var filename = currentDate.getDate().toString() &#x2B; &#x27;-&#x27; &#x2B; currentDate.getMonth().toString() &#x2B; &#x27;-&#x27; &#x2B; currentDate.getFullYear().toString() &#x2B; &#x27;--&#x27; &#x2B; currentDate.getHours().toString() &#x2B; &#x27;-&#x27; &#x2B; currentDate.getMinutes().toString() &#x2B; &#x27;.mp4&#x27;;&#xA;&#xA; const params = {&#xA; Bucket: &#x27;xxx/audio&#x27;,&#xA; Key: filename,&#xA; Body: mp3Blob,&#xA; ACL: &#x27;public-read&#x27;,&#xA; ContentType: &#x27;audio/mp3&#x27;&#xA; }&#xA;&#xA; s3.upload(params, (err, data) => {&#xA; if (err) {&#xA; console.error(&#x27;Error uploading audio:&#x27;, err)&#xA; } else {&#xA; const currentDate = this.$moment();&#xA; const timestamp = currentDate.format(&#x27;dddd DD MMMM YYYY HH:mm&#x27;);&#xA;&#xA; this.updateChildMessage( &#x27;client&#x27;, &#x27;&#x27;, &#x27;audio&#x27;, mp3Blob, timestamp);&#xA; this.isSubmitLoading = false;&#xA; }&#xA; });&#xA; },&#xA; async convertToMp3(blob, format) {&#xA; const ffmpeg = createFFmpeg({ log: true });&#xA; await ffmpeg.load();&#xA;&#xA; const inputPath = &#x27;input.&#x27; &#x2B; format;&#xA; const outputPath = &#x27;output.mp3&#x27;;&#xA;&#xA; ffmpeg.FS(&#x27;writeFile&#x27;, inputPath, await fetchFile(blob));&#xA;&#xA; await ffmpeg.run(&#x27;-i&#x27;, inputPath, &#x27;-acodec&#x27;, &#x27;libmp3lame&#x27;, outputPath);&#xA;&#xA; const mp3Data = ffmpeg.FS(&#x27;readFile&#x27;, outputPath);&#xA; const mp3Blob = new Blob([mp3Data.buffer], { type: &#x27;audio/mp3&#x27; });&#xA;&#xA; ffmpeg.FS(&#x27;unlink&#x27;, inputPath);&#xA; ffmpeg.FS(&#x27;unlink&#x27;, outputPath);&#xA;&#xA; return mp3Blob;&#xA; },&#xA; sendMessage() {&#xA; this.isSubmitLoading = true;&#xA; if (this.messageText.trim() !== &#x27;&#x27;) {&#xA; const emmet = &#x27;client&#x27;;&#xA; const text = this.escapeHTML(this.messageText)&#xA; .replace(/\n/g, &#x27;<br>&#x27;);&#xA;&#xA; const currentDate = this.$moment();&#xA; const timestamp = currentDate.format(&#x27;dddd DD MMMM YYYY HH:mm&#x27;);&#xA;&#xA; this.$nextTick(() => {&#xA; this.messageText = &#x27;&#x27;;&#xA;&#xA; const textarea = document.getElementById(&#x27;messageTextarea&#x27;);&#xA; if (textarea) {&#xA; textarea.scrollTop = 0;&#xA; textarea.scrollLeft = 0;&#xA; }&#xA; });&#xA;&#xA; this.updateChildMessage(emmet, text, &#x27;text&#x27;, &#x27;&#x27;, timestamp);&#xA; this.isSubmitLoading = false;&#xA; }&#xA; },&#xA; escapeHTML(text) {&#xA; const map = {&#xA; &#x27;&amp;&#x27;: &#x27;&amp;amp;&#x27;,&#xA; &#x27;<&#x27;: &#x27;&amp;lt;&#x27;,&#xA; &#x27;>&#x27;: &#x27;&amp;gt;&#x27;,&#xA; &#x27;"&#x27;: &#x27;&amp;quot;&#x27;,&#xA; "&#x27;": &#x27;&amp;#039;&#x27;,&#xA; "`": &#x27;&amp;#x60;&#x27;,&#xA; "/": &#x27;&amp;#x2F;&#x27;&#xA; };&#xA; return text.replace(/[&amp;<>"&#x27;`/]/g, (match) => map[match]);&#xA; },&#xA; updateChildMessage(emmet, text, type, blob, timestamp) {&#xA; const newMessage = {&#xA; id: this.$refs.messagingComponent.lastMessageId &#x2B; 1,&#xA; emmet: emmet,&#xA; text: text,&#xA; type: type,&#xA; blob: blob,&#xA; timestamp: timestamp&#xA; };&#xA;&#xA; this.$refs.messagingComponent.updateMessages(newMessage);&#xA; }&#xA; },&#xA;};&#xA;</script>


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