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Médias (1)
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Collections - Formulaire de création rapide
19 février 2013, par
Mis à jour : Février 2013
Langue : français
Type : Image
Autres articles (61)
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L’agrémenter visuellement
10 avril 2011MediaSPIP est basé sur un système de thèmes et de squelettes. Les squelettes définissent le placement des informations dans la page, définissant un usage spécifique de la plateforme, et les thèmes l’habillage graphique général.
Chacun peut proposer un nouveau thème graphique ou un squelette et le mettre à disposition de la communauté. -
Les autorisations surchargées par les plugins
27 avril 2010, parMediaspip core
autoriser_auteur_modifier() afin que les visiteurs soient capables de modifier leurs informations sur la page d’auteurs -
Personnaliser les catégories
21 juin 2013, parFormulaire de création d’une catégorie
Pour ceux qui connaissent bien SPIP, une catégorie peut être assimilée à une rubrique.
Dans le cas d’un document de type catégorie, les champs proposés par défaut sont : Texte
On peut modifier ce formulaire dans la partie :
Administration > Configuration des masques de formulaire.
Dans le cas d’un document de type média, les champs non affichés par défaut sont : Descriptif rapide
Par ailleurs, c’est dans cette partie configuration qu’on peut indiquer le (...)
Sur d’autres sites (12056)
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Changing x264 settings on the fly
22 décembre 2018, par S RedI am curious to know if anyone has experience with modifying x264 settings during encoding (this is for testing live streaming hence I need to be able to modify settings based on cpu and upload characteristics).



I saw an API for encoder_reconfig() in x264.h, curious if folks have used that, and if its accessible from ffmpeg ? Is it possible to modify a high-level option like 'preset', or do I need to modify individual options like chroma-me, trellis etc.


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Get Timecode from MP4 generated in Adobe Premiere / Encoder in Python and FFMPEG
3 novembre 2019, par russellaugustI’m writing a script that needs to either convert or re-container an MP4 as an MOV with timecode.
I have an MP4 generated from Adobe Premiere. If I bring that file back into Premiere, I have timecode. I can see it so I know it is there.
I can’t seem to extract the timecode track from the MP4. I’ve looked everywhere online and found some discussions around it, but no actual success in extracting the timecode.
I’ve been using ffprobe to see if there’s any mention of the timecode in the MP4, but having no luck. I’ve tried PyMediaInfo with no success.
Here’s what ffprobe shows :
ffprobe version 4.2.1 Copyright (c) 2007-2019 the FFmpeg developers
built with Apple clang version 11.0.0 (clang-1100.0.33.8)
configuration: --prefix=/usr/local/Cellar/ffmpeg/4.2.1_1 --enable-shared --enable-pthreads --enable-version3 --enable-avresample --cc=clang --host-cflags='-I/Library/Java/JavaVirtualMachines/adoptopenjdk-13.jdk/Contents/Home/include -I/Library/Java/JavaVirtualMachines/adoptopenjdk-13.jdk/Contents/Home/include/darwin -fno-stack-check' --host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libbluray --enable-libmp3lame --enable-libopus --enable-librubberband --enable-libsnappy --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librtmp --enable-libspeex --enable-libsoxr --enable-videotoolbox --disable-libjack --disable-indev=jack
libavutil 56. 31.100 / 56. 31.100
libavcodec 58. 54.100 / 58. 54.100
libavformat 58. 29.100 / 58. 29.100
libavdevice 58. 8.100 / 58. 8.100
libavfilter 7. 57.100 / 7. 57.100
libavresample 4. 0. 0 / 4. 0. 0
libswscale 5. 5.100 / 5. 5.100
libswresample 3. 5.100 / 3. 5.100
libpostproc 55. 5.100 / 55. 5.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'demo_SequenceV3.mp4':
Metadata:
major_brand : mp42
minor_version : 0
compatible_brands: mp42mp41
creation_time : 2019-11-01T23:34:45.000000Z
Duration: 00:00:27.69, start: 0.000000, bitrate: 10463 kb/s
Stream #0:0(eng): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, bt709), 2304x1152 [SAR 1:1 DAR 2:1], 10142 kb/s, 23.98 fps, 23.98 tbr, 24k tbn, 48k tbc (default)
Metadata:
creation_time : 2019-11-01T23:34:45.000000Z
handler_name : ?Mainconcept Video Media Handler
encoder : AVC Coding
Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 317 kb/s (default)
Metadata:
creation_time : 2019-11-01T23:34:46.000000Z
handler_name : #Mainconcept MP4 Sound Media Handler
[STREAM]
index=0
codec_name=h264
codec_long_name=H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10
profile=Main
codec_type=video
codec_time_base=1001/48000
codec_tag_string=avc1
codec_tag=0x31637661
width=2304
height=1152
coded_width=2304
coded_height=1152
has_b_frames=0
sample_aspect_ratio=1:1
display_aspect_ratio=2:1
pix_fmt=yuv420p
level=50
color_range=tv
color_space=bt709
color_transfer=bt709
color_primaries=bt709
chroma_location=left
field_order=unknown
timecode=N/A
refs=1
is_avc=true
nal_length_size=4
id=N/A
r_frame_rate=24000/1001
avg_frame_rate=24000/1001
time_base=1/24000
start_pts=0
start_time=0.000000
duration_ts=663663
duration=27.652625
bit_rate=10142082
max_bit_rate=N/A
bits_per_raw_sample=8
nb_frames=663
nb_read_frames=N/A
nb_read_packets=N/A
DISPOSITION:default=1
DISPOSITION:dub=0
DISPOSITION:original=0
DISPOSITION:comment=0
DISPOSITION:lyrics=0
DISPOSITION:karaoke=0
DISPOSITION:forced=0
DISPOSITION:hearing_impaired=0
DISPOSITION:visual_impaired=0
DISPOSITION:clean_effects=0
DISPOSITION:attached_pic=0
DISPOSITION:timed_thumbnails=0
TAG:creation_time=2019-11-01T23:34:45.000000Z
TAG:language=eng
TAG:handler_name=Mainconcept Video Media Handler
TAG:encoder=AVC Coding
[/STREAM]
[STREAM]
index=1
codec_name=aac
codec_long_name=AAC (Advanced Audio Coding)
profile=LC
codec_type=audio
codec_time_base=1/48000
codec_tag_string=mp4a
codec_tag=0x6134706d
sample_fmt=fltp
sample_rate=48000
channels=2
channel_layout=stereo
bits_per_sample=0
id=N/A
r_frame_rate=0/0
avg_frame_rate=0/0
time_base=1/48000
start_pts=0
start_time=0.000000
duration_ts=1327326
duration=27.652625
bit_rate=317375
max_bit_rate=335623
bits_per_raw_sample=N/A
nb_frames=1298
nb_read_frames=N/A
nb_read_packets=N/A
DISPOSITION:default=1
DISPOSITION:dub=0
DISPOSITION:original=0
DISPOSITION:comment=0
DISPOSITION:lyrics=0
DISPOSITION:karaoke=0
DISPOSITION:forced=0
DISPOSITION:hearing_impaired=0
DISPOSITION:visual_impaired=0
DISPOSITION:clean_effects=0
DISPOSITION:attached_pic=0
DISPOSITION:timed_thumbnails=0
TAG:creation_time=2019-11-01T23:34:46.000000Z
TAG:language=eng
TAG:handler_name=#Mainconcept MP4 Sound Media Handler
[/STREAM]
[FORMAT]
filename=demo_SequenceV3.mp4
nb_streams=2
nb_programs=0
format_name=mov,mp4,m4a,3gp,3g2,mj2
format_long_name=QuickTime / MOV
start_time=0.000000
duration=27.690667
size=36216937
bit_rate=10463290
probe_score=100
TAG:major_brand=mp42
TAG:minor_version=0
TAG:compatible_brands=mp42mp41
TAG:creation_time=2019-11-01T23:34:45.000000Z
[/FORMAT]And here was what I started experimenting with in Python.
from pymediainfo import MediaInfo
media_info = MediaInfo.parse('demo_SequenceV3.mp4')
for track in media_info.tracks:
if track.bit_rate is not None:
print ("%s: %s" % (track.track_type, track.bit_rate))
else:
print ("""%s tracks do not have bit rate associated with them.""" % track.track_type)I know I’m not using MediaInfo correctly, but I couldn’t find any documentation on timecode, and to be honest I’m pretty confident it’ll just use FFMPEG’s system of searching for a data track that doesn’t appear to exist.
Anyone here know enough about this to either get it working or to point me in the right direction ?
The goal is to re-wrap an MP4 as an MOV and translate the timecode so it is back where it normally is on the MOV.
EDIT : here is an example MP4 that I need to extract the timecode from :
https://www.dropbox.com/s/a1euiumiapkpzhn/timecode_demo.mp4?dl=0
And as you can see in this image, the MP4 does have timecode that is being read by Premiere on the bottom left of frame. TC starts at 10:11:12:13.
https://www.dropbox.com/s/pafqicnnsqu93rl/timecode_window_in_premiere.png
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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>