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Autres articles (56)
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(Dés)Activation de fonctionnalités (plugins)
18 février 2011, parPour gérer l’ajout et la suppression de fonctionnalités supplémentaires (ou plugins), MediaSPIP utilise à partir de la version 0.2 SVP.
SVP permet l’activation facile de plugins depuis l’espace de configuration de MediaSPIP.
Pour y accéder, il suffit de se rendre dans l’espace de configuration puis de se rendre sur la page "Gestion des plugins".
MediaSPIP est fourni par défaut avec l’ensemble des plugins dits "compatibles", ils ont été testés et intégrés afin de fonctionner parfaitement avec chaque (...) -
Installation en mode ferme
4 février 2011, parLe mode ferme permet d’héberger plusieurs sites de type MediaSPIP en n’installant qu’une seule fois son noyau fonctionnel.
C’est la méthode que nous utilisons sur cette même plateforme.
L’utilisation en mode ferme nécessite de connaïtre un peu le mécanisme de SPIP contrairement à la version standalone qui ne nécessite pas réellement de connaissances spécifique puisque l’espace privé habituel de SPIP n’est plus utilisé.
Dans un premier temps, vous devez avoir installé les mêmes fichiers que l’installation (...) -
MediaSPIP v0.2
21 juin 2013, parMediaSPIP 0.2 is the first MediaSPIP stable release.
Its official release date is June 21, 2013 and is announced here.
The zip file provided here only contains the sources of MediaSPIP in its standalone version.
To get a working installation, you must manually install all-software dependencies on the server.
If you want to use this archive for an installation in "farm mode", you will also need to proceed to other manual (...)
Sur d’autres sites (11237)
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Parse dynamic mpd file with Media Source Extensions
17 février 2023, par FrankCI just started learning about adaptive streaming, and currently I'm working on a project that needs showing a live video. In order to control some of the elements in mpd file, I determined to use MSE instead of dash.js. I refer to the code at the following URL :https://learn.microsoft.com/en-us/previous-versions/windows/internet-explorer/ie-developer/samples/dn551368(v=vs.85)
But I found out that there is no "Initialization" tag or "range" attribute in my mpd file. I don't find any relative attribute as well. By the way I'm use nginx-rtmp + ffmpeg to generate dash file.
So here is my dash file looks like


<?xml version="1.0"?>
 
 <period start="PT0S">
 
 
 
 <segmenttimeline>
 <s t="0" d="10000"></s>
 <s t="10000" d="10000"></s>
 <s t="20000" d="5000"></s>
 <s t="25000" d="10000"></s>
 </segmenttimeline>
 
 
 
 </period>



My question is :
1.Did I have any missing parameters in using ffmpeg or nginx-rtmp resulting in losting tag in mpd file ?
2.Or there is other way to setup "Initialization"/"range" attribute and let my program work ?
3.I also curious about why my mpd file doesn't have a baseURL element ?


※My mpd file works fine with dash.js, I can see the video properly


THANKS A LOT


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FFMpeg command line to create specific MPD Manifest
22 février 2024, par Seth HabermanI have tried to get an FFMpeg command to yield the below manifest. Right below is the FFmpeg command that I have tried to make but it has not created the same manifest file as what I am trying to replicate a stream from a third party system to add my own stream to their system so that it will actually play back.


"$ffmpeg_path" \
 -i "$input_file" \
 -r 30000/1001 \
 -vf "scale=3840:1080" \
 -c:v libx265 \
 -c:a aac -b:a 128k \
 -ar 48000 \
 -f dash \
 -use_timeline 1 \
 -use_template 1 \
 -init_seg_name "init-stream\$RepresentationID\$.m4s" \
 -media_seg_name "chunk-stream\$RepresentationID\$-\$Number%05d\$.m4s" \
 -seg_duration 3 \
 "$output_file"


The code above yields a manifest that is structured like below.


<?xml version="1.0" encoding="utf-8"?>
<mpd xmlns="urn:mpeg:dash:schema:mpd:2011" profiles="urn:mpeg:dash:profile:isoff-live:2011" type="static" mediapresentationduration="PT1M35.1S" maxsegmentduration="PT3.0S" minbuffertime="PT16.8S">
 <programinformation>
 </programinformation>
 <servicedescription>
 </servicedescription>
 <period start="PT0.0S">
 <adaptationset contenttype="video" startwithsap="1" segmentalignment="true" bitstreamswitching="true" framerate="30000/1001" maxwidth="3840" maxheight="1080" par="32:9">
 <representation mimetype="video/mp4" codecs="hev1" bandwidth="2227590" width="3840" height="1080" sar="1:1">
 <segmenttemplate timescale="30000" initialization="init-stream$RepresentationID$.m4s" media="chunk-stream$RepresentationID$-$Number%05d$.m4s" startnumber="1">
 <segmenttimeline>
 <s t="0" d="247247"></s>
 <s d="250250" r="9"></s>
 <s d="104104"></s>
 </segmenttimeline>
 </segmenttemplate>
 </representation>
 </adaptationset>
 <adaptationset contenttype="audio" startwithsap="1" segmentalignment="true" bitstreamswitching="true">
 <representation mimetype="audio/mp4" codecs="mp4a.40.2" bandwidth="128000" audiosamplingrate="48000">
 <audiochannelconfiguration schemeiduri="urn:mpeg:dash:23003:3:audio_channel_configuration:2011" value="1"></audiochannelconfiguration>
 <segmenttemplate timescale="48000" initialization="init-stream$RepresentationID$.m4s" media="chunk-stream$RepresentationID$-$Number%05d$.m4s" startnumber="1">
 <segmenttimeline>
 <s t="0" d="143360"></s>
 <s d="144384" r="29"></s>
 <s d="93120"></s>
 </segmenttimeline>
 </segmenttemplate>
 </representation>
 </adaptationset>
 </period>
</mpd>



The problem is that I I need it to create a stream where the manifest looks like the manifest below. If it doesn't look or function as below, it will not playback correctly on this third parties system.


<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<mpd xmlns="urn:mpeg:dash:schema:mpd:2011" profiles="urn:mpeg:dash:profile:isoff-live:2011" type="static" mediapresentationduration="PT1M35.7S" minbuffertime="PT5.9S">
 <programinformation></programinformation>
 <period start="PT0.0S">
 <adaptationset contenttype="video" segmentalignment="true" bitstreamswitching="true">
 <representation bandwidth="12000000" width="3840" height="1080" framerate="30000/1001" mimetype="video/mp4" codecs="hev1">
 <segmenttemplate media="chunk-stream$RepresentationID$-$Number%05d$.m4s" initialization="init-stream$RepresentationID$.m4s" startnumber="1" timescale="30000">
 <segmenttimeline>
 <s t="0" d="89089" r="31"></s>
 <s d="21021"></s>
 </segmenttimeline>
 </segmenttemplate>
 </representation>
 </adaptationset>
 <adaptationset contenttype="audio" segmentalignment="true" bitstreamswitching="true">
 <representation bandwidth="1536000" audiosamplingrate="48000" mimetype="audio/mp4" codecs="mp4a.40.2">
 <audiochannelconfiguration schemeiduri="urn:mpeg:dash:23003:3:audio_channel_configuration:2011" value="16"></audiochannelconfiguration>
 <segmenttemplate media="chunk-stream$RepresentationID$-$Number%05d$.m4s" initialization="init-stream$RepresentationID$.m4s" startnumber="1" timescale="48000">
 <segmenttimeline>
 <s t="0" d="143360"></s>
 <s d="142336" r="2"></s>
 <s d="143360"></s>
 <s d="142336" r="3"></s>
 <s d="143360"></s>
 <s d="142336" r="3"></s>
 <s d="143360"></s>
 <s d="142336" r="3"></s>
 <s d="143360"></s>
 <s d="142336" r="3"></s>
 <s d="143360"></s>
 <s d="142336" r="3"></s>
 <s d="143360"></s>
 <s d="142336" r="1"></s>
 <s d="32768"></s>
 </segmenttimeline>
 </segmenttemplate>
 </representation>
 </adaptationset>
 </period>
</mpd>


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Impossible to redirect video stream after conversion (mkv to mp4)
17 décembre 2019, par elgruskoI’m currently realising a school project which aims a streaming video website (like Netflix) using torrent-stream (with the magnet link). I am using NodeJS for the stream part.
My problem is : I can’t redirect the stream to the HTML 5 player while i’m trying to stream and converting (with ffmpeg) video at the same time. I think it’s because I just can’t know what’s will be the final size of the converted file.
In browser’s console I have this message :net::ERR_CONTENT_LENGTH_MISMATCH 200 (OK)I tried to put this in the header :
Transfer-Encoding: chunkedinstead of Content-Length
I specify that the stream (before conversion) works perfectlyThis is my code :
getTorrentFile.then(function (file) {
res.setHeader('Content-Type', 'video/mp4');
res.setHeader('Content-Length', file.length);
const ranges = parseRange(file.length, '15' /* variable à comprendre */, { combine: true });
console.log(ranges);
if (ranges === -1) {
// 416 Requested Range Not Satisfiable
console.log('416')
res.statusCode = 416;
return res.end();
} else if (ranges === -2 || ranges.type !== 'bytes' || ranges.length > 1) {
// 200 OK requested range malformed or multiple ranges requested, stream ent'ire video
if (req.method !== 'GET') return res.end();
console.log('200')
stream = file.createReadStream()
ffmpeg(stream)
.videoCodec('libx264')
.audioCodec('aac')
.output(res)
.output('./video/' + film + '_s' + season + '_e' + episode + '.mp4')
.outputFormat('mp4')
.outputOptions('-movflags frag_keyframe+empty_moov')
.on('error', function(err) {
console.log('An error occurred: ' + err.message);
})
.on('progress', function(progress) {
console.log('Processing: ' + progress.targetSize + 'kb done');
})
.on('end', function() {
console.log('Processing finished !');
})
.addOutputOption('-acodec')
.run()Sorry if i’m not really clear, ask me some questions if you need more informations :)
Thanks for your help, bye :)
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