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Autres articles (111)
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Script d’installation automatique de MediaSPIP
25 avril 2011, parAfin de palier aux difficultés d’installation dues principalement aux dépendances logicielles coté serveur, un script d’installation "tout en un" en bash a été créé afin de faciliter cette étape sur un serveur doté d’une distribution Linux compatible.
Vous devez bénéficier d’un accès SSH à votre serveur et d’un compte "root" afin de l’utiliser, ce qui permettra d’installer les dépendances. Contactez votre hébergeur si vous ne disposez pas de cela.
La documentation de l’utilisation du script d’installation (...) -
Des sites réalisés avec MediaSPIP
2 mai 2011, parCette page présente quelques-uns des sites fonctionnant sous MediaSPIP.
Vous pouvez bien entendu ajouter le votre grâce au formulaire en bas de page. -
Gestion générale des documents
13 mai 2011, parMédiaSPIP ne modifie jamais le document original mis en ligne.
Pour chaque document mis en ligne il effectue deux opérations successives : la création d’une version supplémentaire qui peut être facilement consultée en ligne tout en laissant l’original téléchargeable dans le cas où le document original ne peut être lu dans un navigateur Internet ; la récupération des métadonnées du document original pour illustrer textuellement le fichier ;
Les tableaux ci-dessous expliquent ce que peut faire MédiaSPIP (...)
Sur d’autres sites (9503)
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Encountered an exception of ffmpeg.wasm can only run one command at a time
2 mars 2023, par Itay113I want to make a video chat using ffmepg wasm (I know the standard is WebRTC but my assignment is to do this with ffmpeg wasm and a server connecting the 2 clients) and when doing the follow code I am getting ffmpeg.wasm can only run one command at a time exception on the ffmpegWorker.run line


function App() {
 const ffmpegWorker = createFFmpeg({
 log: true
 })

 async function initFFmpeg() {
 await ffmpegWorker.load();
 }

 async function transcode(webcamData) {
 const name = 'record.webm';
 await ffmpegWorker.FS('writeFile', name, await fetchFile(webcamData));
 ffmpegWorker.run('-i', name, '-preset', 'ultrafast', '-c:v', 'h264', '-crf', '28', '-b:v', '0', '-row-mt', '1', '-f', 'mp4', 'output.mp4')
 .then(()=> {

 const data = ffmpegWorker.FS('readFile', 'output.mp4');
 
 const video = document.getElementById('output-video');
 video.src = URL.createObjectURL(new Blob([data.buffer], { type: 'video/mp4' }));
 ffmpegWorker.FS('unlink', 'output.mp4');
 })
 }

 function requestMedia() {
 const webcam = document.getElementById('webcam');
 const chunks = []
 navigator.mediaDevices.getUserMedia({ video: true, audio: true })
 .then(async (stream) => {
 webcam.srcObject = stream;
 await webcam.play();
 const mediaRecorder = new MediaRecorder(stream);
 mediaRecorder.start(0);
 mediaRecorder.onstop = function(e) {
 stream.stop(); 
 }
 mediaRecorder.ondataavailable = async function(e) {
 chunks.push(e.data);
 await transcode(new Uint8Array(await (new Blob(chunks)).arrayBuffer()));
 
 }
 })
 }

 useEffect(() => {
 requestMedia();
 }, [])

 return (
 <div classname="App">
 <div>
 <video width="320px" height="180px"></video>
 <video width="320px" height="180px"></video>
 </div>
 </div>
 );
}


I have tried messing around with the time slice on the media recorder start method argument but it didn't helped


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Capturing audio data (using javascript) and uploading on a server as MP3
4 septembre 2018, par MichelFollowing a number of resources on the internet, I am trying to build a simple web page, where I can go to record something (my voice), then make a mp3 file out of the recording and finally upload that file to a server.
At this point I can do the recording and also play back, but I haven’t gone as far as uploading, it seems like I cannot even make an mp3 file locally.
Can someone tell me what I am doing wrong, or in the wrong order ?Below is all the code I have at this point.
<div>
<h2>Audio record and playback</h2>
<p>
<button></button></p><h3>Start</h3>
<button disabled="disabled"><h3>Stop</h3></button>
<audio controls="controls"></audio>
<a></a>
</div>
<code class="echappe-js"><script><br />
var player = document.getElementById('player');<br />
<br />
var handleSuccess = function(stream) {<br />
rec = new MediaRecorder(stream);<br />
<br />
rec.ondataavailable = e => {<br />
audioChunks.push(e.data);<br />
if (rec.state == "inactive") {<br />
let blob = new Blob(audioChunks,{type:'audio/x-mpeg-3'});<br />
player.src = URL.createObjectURL(blob);<br />
player.controls=true;<br />
player.autoplay=true;<br />
// audioDownload.href = player.src;<br />
// audioDownload.download = 'sound.data';<br />
// audioDownload.innerHTML = 'Download';<br />
mp3Build();<br />
}<br />
}<br />
<br />
player.src = stream;<br />
};<br />
<br />
navigator.mediaDevices.getUserMedia({audio:true/*, video: false */})<br />
.then(handleSuccess);<br />
<br />
startRecord.onclick = e => {<br />
startRecord.disabled = true;<br />
stopRecord.disabled=false;<br />
audioChunks = [];<br />
rec.start();<br />
}<br />
<br />
stopRecord.onclick = e => {<br />
startRecord.disabled = false;<br />
stopRecord.disabled=true;<br />
rec.stop();<br />
}<br />
<br />
<br />
var ffmpeg = require('ffmpeg');<br />
<br />
function mp3Build() {<br />
try {<br />
var process = new ffmpeg('sound.data');<br />
process.then(function (audio) {<br />
// Callback mode.<br />
audio.fnExtractSoundToMP3('sound.mp3', function (error, file) {<br />
if (!error) {<br />
console.log('Audio file: ' + file);<br />
audioDownload.href = player.src;<br />
audioDownload.download = 'sound.mp3';<br />
audioDownload.innerHTML = 'Download';<br />
} else {<br />
console.log('Error-fnExtractSoundToMP3: ' + error);<br />
}<br />
});<br />
}, function (err) {<br />
console.log('Error: ' + err);<br />
});<br />
} catch (e) {<br />
console.log(e.code);<br />
console.log(e.msg);<br />
}<br />
}<br />
<br />
</script>When I try to investigate and see what is happening using the Debugger inside the Web Console ; on the line :
var process = new ffmpeg('sound.data');I get this message :
Paused on exception
TypeError ffmpeg is not a contructor.And on the line :
var ffmpeg = require('ffmpeg');I get this message :
Paused on exception
ReferenceError require is not defined.Beside when I watch the expression ffmpeg, I can see :
ffmpeg: undefinedAfter some further investigations, and using browserify I use the following code :
<div>
<h2>Audio record and playback</h2>
<p>
<button></button></p><h3>Start</h3>
<button disabled="disabled"><h3>Stop</h3></button>
<audio controls="controls"></audio>
<a></a>
</div>
<code class="echappe-js"><script src='http://stackoverflow.com/feeds/tag/bundle.js'></script><script><br />
var player = document.getElementById('player');<br />
<br />
var handleSuccess = function(stream) {<br />
rec = new MediaRecorder(stream);<br />
<br />
rec.ondataavailable = e => {<br />
if (rec.state == "inactive") {<br />
let blob = new Blob(audioChunks,{type:'audio/x-mpeg-3'});<br />
//player.src = URL.createObjectURL(blob);<br />
//player.srcObject = URL.createObjectURL(blob);<br />
//player.srcObject = blob;<br />
player.srcObject = stream;<br />
player.controls=true;<br />
player.autoplay=true;<br />
// audioDownload.href = player.src;<br />
// audioDownload.download = 'sound.data';<br />
// audioDownload.innerHTML = 'Download';<br />
mp3Build();<br />
}<br />
}<br />
<br />
//player.src = stream;<br />
player.srcObject = stream;<br />
};<br />
<br />
navigator.mediaDevices.getUserMedia({audio:true/*, video: false */})<br />
.then(handleSuccess);<br />
<br />
startRecord.onclick = e => {<br />
startRecord.disabled = true;<br />
stopRecord.disabled=false;<br />
audioChunks = [];<br />
rec.start();<br />
}<br />
<br />
stopRecord.onclick = e => {<br />
startRecord.disabled = false;<br />
stopRecord.disabled=true;<br />
rec.stop();<br />
}<br />
<br />
<br />
var ffmpeg = require('ffmpeg');<br />
<br />
function mp3Build() {<br />
try {<br />
var process = new ffmpeg('sound.data');<br />
process.then(function (audio) {<br />
// Callback mode.<br />
audio.fnExtractSoundToMP3('sound.mp3', function (error, file) {<br />
if (!error) {<br />
console.log('Audio file: ' + file);<br />
//audioDownload.href = player.src;<br />
audioDownload.href = player.srcObject;<br />
audioDownload.download = 'sound.mp3';<br />
audioDownload.innerHTML = 'Download';<br />
} else {<br />
console.log('Error-fnExtractSoundToMP3: ' + error);<br />
}<br />
});<br />
}, function (err) {<br />
console.log('Error: ' + err);<br />
});<br />
} catch (e) {<br />
console.log(e.code);<br />
console.log(e.msg);<br />
}<br />
}<br />
<br />
</script>That solved the problem of :
the expression ffmpeg being: undefinedBut the play back is no longer working. I may not be doing the right thing with player.srcObject and maybe some other things too.
When I use this line :
player.srcObject = URL.createObjectURL(blob);I get this message :
Paused on exception
TypeError: Value being assigned to HTMLMediaElement.srcObject is not an object.And when I use this line :
player.srcObject = blob;I get this message :
Paused on exception
TypeError: Value being assigned to HTMLMediaElement.srcObject does not implement interface MediaStream.Finally, if I use this :
player.srcObject = stream;I do not get any error message but the voice recording still does not work.
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Save video to disk from WebRTC MediaStream in Node
27 novembre 2020, par SAGBO AiméI'm building an app where the user can connect to the server through a WebRTC (I'm using simple-peer library both server-side and client-side to set the peer-to-peer connection).
Once the client and the server are connected, the client app stream the user camera and micro to the server.


Now, I want to save the streamed data to the filesystem server-side as an MP4 video file.


I hear about ffmpeg and fluent-ffmpeg to achieve this but i don't know how to use them.


- 

- Server side code to set up the peer connection




const Peer = require("simple-peer");
const wrtc = require("wrtc");

const peer = new Peer({ initiator: false, wrtc: wrtc, trickle: false });

peer.on("error", (err: any) => console.log("error", err));

 peer.on("signal", (data: any) => {
 if (data.type === "offer" || data.type === "answer")
 dispatchMessage(JSON.stringify(data));
 // if (data.renegotiate || data.transceiverRequest) return;
 });

 peer.on("connect", () => {
 console.log("CONNECTED");
 peer.send(JSON.stringify("HELLO DEER PEER FROM SERVER"));
 });

 peer.on("data", (data: any) => {
 console.log("data: ", data);
 });

 peer.on("stream", (stream: MediaStream) => {
 console.log("-------Stream received", stream);
 });

 peer.on("track", (track: MediaStreamTrack) => {
 console.log("-------trackEvent:", track);
 });


- 

- Client-side code




const stream = await window.navigator.mediaDevices.getUserMedia({
 video: { width: { ideal: 4096 }, height: { ideal: 2160 }},
 audio: true,
});

const p = new SimplePeer({
 initiator: isInitiator, 
 trickle: false 
});

stream.getTracks().forEach(track => p.addTrack(
 track, 
 stream 
));

// Here I set up the listeners for the peer connection


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