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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 -
Encoding and processing into web-friendly formats
13 avril 2011, parMediaSPIP automatically converts uploaded files to internet-compatible formats.
Video files are encoded in MP4, Ogv and WebM (supported by HTML5) and MP4 (supported by Flash).
Audio files are encoded in MP3 and Ogg (supported by HTML5) and MP3 (supported by Flash).
Where possible, text is analyzed in order to retrieve the data needed for search engine detection, and then exported as a series of image files.
All uploaded files are stored online in their original format, so you can (...) -
MediaSPIP Player : les contrôles
26 mai 2010, parLes contrôles à la souris du lecteur
En plus des actions au click sur les boutons visibles de l’interface du lecteur, il est également possible d’effectuer d’autres actions grâce à la souris : Click : en cliquant sur la vidéo ou sur le logo du son, celui ci se mettra en lecture ou en pause en fonction de son état actuel ; Molette (roulement) : en plaçant la souris sur l’espace utilisé par le média (hover), la molette de la souris n’exerce plus l’effet habituel de scroll de la page, mais diminue ou (...)
Sur d’autres sites (9499)
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ffmpeg conversion : Twitter rejects video with "Not valid video"
12 février 2020, par DeadlyBaconI have an app that uploads via twitter api chunked upload, and it finally works with photos.
However, I am trying to get it to work with videos.
Uploading didnt work out-of-the-box even though the video format is mp4. The twitter guidelines for uploads are these
With that in mind, I have this ffmpeg command so far :
ffmpeg -i in.mp4 -vf \"scale=1280:720\" -b:v 5000K -minrate 5000K -maxrate 5000K -b:a 128K -r 30 -f mp4 -vcodec libx264 -profile:v high -pix_fmt yuv420p -strict -2 -ac 2 -acodec aac out.mp4I still get "Not valid video", and I don’t know why.
Here’s my mediainfo output for out.mp4 :
General
Count : 328
Count of stream of this kind : 1
Kind of stream : General
Kind of stream : General
Stream identifier : 0
Count of video streams : 1
Count of audio streams : 1
Video_Format_List : AVC
Video_Format_WithHint_List : AVC
Codecs Video : AVC
Video_Language_List : English
Audio_Format_List : AAC
Audio_Format_WithHint_List : AAC
Audio codecs : AAC LC
Audio_Language_List : English
Complete name : video-5e4405cd4348a5e4405cd434d2.mp4
File name : video-5e4405cd4348a5e4405cd434d2
File extension : mp4
Format : MPEG-4
Format : MPEG-4
Format/Extensions usually used : mov mp4 m4v m4a m4b m4p 3ga 3gpa 3gpp 3gp 3gpp2 3g2 k3g jpm jpx mqv ismv isma ismt f4a f4b f4v
Commercial name : MPEG-4
Format profile : Base Media
Internet media type : video/mp4
Codec ID : isom
Codec ID : isom (isom/iso2/avc1/mp41)
Codec ID/Url : http://www.apple.com/quicktime/download/standalone.html
CodecID_Compatible : isom/iso2/avc1/mp41
Codec : MPEG-4
Codec : MPEG-4
Codec/Extensions usually used : mov mp4 m4v m4a m4b m4p 3ga 3gpa 3gpp 3gp 3gpp2 3g2 k3g jpm jpx mqv ismv isma ismt f4a f4b f4v
File size : 52664272
File size : 50.2 MiB
File size : 50 MiB
File size : 50 MiB
File size : 50.2 MiB
File size : 50.22 MiB
Duration : 79744
Duration : 1 min 19 s
Duration : 1 min 19 s 744 ms
Duration : 1 min 19 s
Duration : 00:01:19.744
Duration : 00:01:19:20
Duration : 00:01:19.744 (00:01:19:20)
Overall bit rate : 5283334
Overall bit rate : 5 283 kb/s
Frame rate : 30.000
Frame rate : 30.000 FPS
Frame count : 2390
Stream size : 88780
Stream size : 86.7 KiB (0%)
Stream size : 87 KiB
Stream size : 87 KiB
Stream size : 86.7 KiB
Stream size : 86.70 KiB
Stream size : 86.7 KiB (0%)
Proportion of this stream : 0.00169
HeaderSize : 40
DataSize : 52575500
FooterSize : 88732
IsStreamable : No
File last modification date : UTC 2020-02-12 14:05:37
File last modification date (local) : 2020-02-12 15:05:37
Writing application : Lavf57.83.100
Writing application : Lavf57.83.100
Video
Count : 342
Count of stream of this kind : 1
Kind of stream : Video
Kind of stream : Video
Stream identifier : 0
StreamOrder : 0
ID : 1
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format/Url : http://developers.videolan.org/x264.html
Commercial name : AVC
Format profile : High@L3.1
Format settings : CABAC / 4 Ref Frames
Format settings, CABAC : Yes
Format settings, CABAC : Yes
Format settings, ReFrames : 4
Format settings, ReFrames : 4 frames
Internet media type : video/H264
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Codec : AVC
Codec : AVC
Codec/Family : AVC
Codec/Info : Advanced Video Codec
Codec/Url : http://developers.videolan.org/x264.html
Codec/CC : avc1
Codec profile : High@L3.1
Codec settings : CABAC / 4 Ref Frames
Codec settings, CABAC : Yes
Codec_Settings_RefFrames : 4
Duration : 79667
Duration : 1 min 19 s
Duration : 1 min 19 s 667 ms
Duration : 1 min 19 s
Duration : 00:01:19.667
Duration : 00:01:19:20
Duration : 00:01:19.667 (00:01:19:20)
Bit rate : 5000000
Bit rate : 5 000 kb/s
Width : 1280
Width : 1 280 pixels
Height : 720
Height : 720 pixels
Sampled_Width : 1280
Sampled_Height : 720
Pixel aspect ratio : 1.000
Display aspect ratio : 1.778
Display aspect ratio : 16:9
Rotation : 0.000
Frame rate mode : CFR
Frame rate mode : Constant
FrameRate_Mode_Original : VFR
Frame rate : 30.000
Frame rate : 30.000 FPS
Frame count : 2390
Resolution : 8
Resolution : 8 bits
Colorimetry : 4:2:0
Color space : YUV
Chroma subsampling : 4:2:0
Chroma subsampling : 4:2:0
Bit depth : 8
Bit depth : 8 bits
Scan type : Progressive
Scan type : Progressive
Interlacement : PPF
Interlacement : Progressive
Bits/(Pixel*Frame) : 0.181
Stream size : 51297022
Stream size : 48.9 MiB (97%)
Stream size : 49 MiB
Stream size : 49 MiB
Stream size : 48.9 MiB
Stream size : 48.92 MiB
Stream size : 48.9 MiB (97%)
Proportion of this stream : 0.97404
Writing library : x264 - core 152 r2854 e9a5903
Writing library : x264 core 152 r2854 e9a5903
Encoded_Library_Name : x264
Encoded_Library_Version : core 152 r2854 e9a5903
Encoding settings : cabac=1 / ref=3 / deblock=1:0:0 / analyse=0x3:0x113 / me=hex / subme=7 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=1 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-2 / threads=12 / lookahead_threads=2 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=3 / b_pyramid=2 / b_adapt=1 / b_bias=0 / direct=1 / weightb=1 / open_gop=0 / weightp=2 / keyint=250 / keyint_min=25 / scenecut=40 / intra_refresh=0 / rc_lookahead=40 / rc=abr / mbtree=1 / bitrate=5000 / ratetol=1.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / ip_ratio=1.40 / aq=1:1.00
Language : en
Language : English
Language : English
Language : en
Language : eng
Language : en
Audio
Count : 275
Count of stream of this kind : 1
Kind of stream : Audio
Kind of stream : Audio
Stream identifier : 0
StreamOrder : 1
ID : 2
ID : 2
Format : AAC
Format/Info : Advanced Audio Codec
Commercial name : AAC
Format profile : LC
Format settings, SBR : No (Explicit)
Format settings, SBR : No (Explicit)
Codec ID : mp4a-40-2
Codec : AAC LC
Codec : AAC LC
Codec/Family : AAC
Codec/CC : 40
Duration : 79744
Duration : 1 min 19 s
Duration : 1 min 19 s 744 ms
Duration : 1 min 19 s
Duration : 00:01:19.744
Duration : 00:01:19:25
Duration : 00:01:19.744 (00:01:19:25)
Bit rate mode : CBR
Bit rate mode : Constant
Bit rate : 128257
Bit rate : 128 kb/s
Channel(s) : 2
Channel(s) : 2 channels
Channel positions : Front: L R
Channel positions : 2/0/0
ChannelLayout : L R
Samples per frame : 1024
Sampling rate : 48000
Sampling rate : 48.0 kHz
Samples count : 3827712
Frame rate : 46.875
Frame rate : 46.875 FPS (1024 SPF)
Frame count : 3738
Compression mode : Lossy
Compression mode : Lossy
Stream size : 1278470
Stream size : 1.22 MiB (2%)
Stream size : 1 MiB
Stream size : 1.2 MiB
Stream size : 1.22 MiB
Stream size : 1.219 MiB
Stream size : 1.22 MiB (2%)
Proportion of this stream : 0.02428
Language : en
Language : English
Language : English
Language : en
Language : eng
Language : en
Default : Yes
Default : Yes
Alternate group : 1
Alternate group : 1Edit : Guess Ill add my PHP code too (This is chopped in a sensible manner because the actual file is very large) :
// Set up Codebird
\Codebird\Codebird::setConsumerKey($consumer_key, $consumer_secret); // static, see README
$cb = \Codebird\Codebird::getInstance();
$cb->setToken($token, $token_secret);
$cb->setTimeout(60 * 1000); // 60 second request timeout
$video = new Video($path);
// Convert to the parameter required by twitter.
$converted = $video->convert();
$path = realpath('videos/' . $converted);
$file = fopen($path, 'rb');
$size = fstat($file)['size'];
$mime_type = mime_content_type($path);
$media = $cb->media_upload([
'command' => 'INIT',
'media_type' => $mime_type,
'media_category' => 'tweet_video',
'total_bytes' => $size,
]);
$success = $media->httpstatus >= 200 && $media->httpstatus < 300; # 2xx
if (!$success) {
throw new TwitterException("Failed to INIT upload for $path...");
}
// APPEND chunks to upload.
$mediaId = $media->media_id_string;
$segmentId = 0;
while (!feof($file)) {
echo "chunk #$segmentId....";
$chunk = fread($file, 512 * 1024); // caps out at 512 MB
echo "chunk size: ". strlen($chunk);
$media = $cb->media_upload([
'command' => 'APPEND',
'media_id' => $mediaId,
'segment_index' => $segmentId,
'media' => $chunk,
]);
$success = $media->httpstatus >= 200 && $media->httpstatus < 300; # 2xx
if (!$success) {
throw new TwitterException("Failed to APPEND to upload for $path, chunk $segmentId...");
}
$segmentId++;
}
// Close file and FINALIZE upload.
fclose($file);
echo "FINALIZING id $mediaId...";
$media = $cb->media_upload([
'command' => 'FINALIZE',
'media_id' => $mediaId,
]);
$success = $media->httpstatus >= 200 && $media->httpstatus < 300; # 2xx
if (!$success) {
var_dump($media);
throw new TwitterException("Failed to FINALIZE upload for $path...");
}
return $mediaId;Video is my ffmpeg class, which I’ll paste below, and $path is a URL leading to a perfectly valid mp4 video.
Video.php :
<?php
class VideoConversionException extends \Exception {}
class Video {
public $name;
public $converted;
public function __construct($name) {
self::clear();
$this->name = $name;
}
public function convert() {
$tmpVideo = 'video-' . uniqid() . uniqid() . '.mp4';
$videoPath = 'videos/' . $tmpVideo;
//$ffmpeg = "ffmpeg -i https://tvcanarias.acfipress.com/BC_190907_gc_teror.mp4 -vf "scale=1280:720" -b:v 5000K -b:a 128K -r 30 -f mp4 -vcodec libx264 -acodec aac output_video.mp4";
$ffmpeg = "ffmpeg -i {$this->name} -vf \"scale=1280:720\" -b:v 5000K -minrate 5000K -maxrate 5000K -b:a 128K -r 30 -f mp4 -vcodec libx264 -profile:v high -pix_fmt yuv420p -strict -2 -ac 2 -acodec aac $videoPath";
//$ffmpeg = "ffmpeg -i {$this->name} -pix_fmt yuv420p -vcodec libx264 -vf scale=640:-1 -acodec aac -vb 1024k -minrate 1024k -maxrate 1024k -bufsize 1024k -ar 44100 -ac 2 -strict experimental -r 30 $videoPath";
$output = [];
exec($ffmpeg, $output, $status);
if ($status != 0) {
//die("Couldnt run ffmpeg. (Error code: #$status)");
throw new VideoConversionException("Couldn't run ffmpeg. (Error code: #$status)");
}
$this->converted = $tmpVideo;
return $tmpVideo;
}
public function shredConverted() {
// delete video.
@unlink("videos/{$this->$converted}");
}
public static function clear() {
// We can't really shred videos right away as they might be still uploading.
// Therefore, every time this library is used, we will just delete videos older
// than, say, an hour.
$files = scandir('videos');
$curtime = time();
foreach ($files as $file) {
if ($file == '.gitignore' || $file == '.' || $file == '..') {
continue;
}
$mtime = filemtime("videos/$file");
$diff = $curtime - $mtime;
$overAnHour = $diff > (60 * 60);
if ($overAnHour) {
@unlink("videos/$file");
}
}
}
} -
The new GDPR data protection regulation and potential consequences on Piwik
GDPR is a new data protection related regulation in Europe. GDPR stands for General Data Protection Regulation.
The purpose of this European regulation is to strengthen and unify data protection for all individuals within the European Union. This also includes entities outside Europe willing to do business with European citizens. GDPR is a set of processes you need to follow within your organization to protect the privacy of European citizens.
GDPR will start to apply in May 2018. It is recognized to be dissuasive because of the potential penalty of up to 4% of the yearly turnover, in case of infringement.
Many articles have been written about GDPR including our previous article. Few of them are explaining how it will affect web analytics vendors : this is what this article is about.
Am I really impacted by GDPR if I am a Piwik user ?
As Piwik can collect personal data, the answer is yes. Piwik analytics data is impacted by the GDPR.
As GDPR is a general concept, we decided from the official guidelines to assume what will be the potential consequences on the use of Piwik.
There are 2 potential scenarios we can identify :
- 1 – You are collecting personal data with Piwik
- 2 – You are not collecting personal data with Piwik
1 – Personal data collection with Piwik
According to GDPR : IP addresses, cookies, UserID are personal data.
IP addresses are personal data, so you will have to anonymize them unless you receive explicit consent from the visitor. Please view the following article in order to learn : how can I anonymize IP addresses in Piwik ?
According to GDPR, cookies are personal data too. But as all cookies are not created equal it may be possible that some need to require user consent whereas other not. Whatever will be the final decision, you can learn about the first-party cookies created by Piwik and how to disable all tracking cookies in Piwik ?
User ID, you are impacted if the User ID you assign is specific to an individual or if you can cross the User ID data further and find back the individual personal data.
Any extra personal data you may collect with Piwik, it could be for example : first names, family names, e-mail address… You are able to collect such data using custom dimensions, custom variables…
What are the rules I have to comply with ?
By collecting personal data, you will have to respect EU citizens rights, which include :
- The possibility for them to view the data you collected on them
- The possibility to rectify some data concerning them
- The possibility to delete their data when they request about it
As you can imagine, for the first obligation, you will have to export all the data. So if a user is requesting it, you will have to export the data linked to his IP address(es). It can be easily exported as a .csv file for example.
In order to do that, just create a segment according to the IP address of the user who requested it and then export the “Visitor log” report.
If the personal data is not linked with the IP address but other attributes such as User ID or a custom dimension, you can provide the same data export by using the segment function and filtering on the personal data field.The data edit and deletion process on Piwik is a bit trickier as it currently requires administration system skills. We are planning to develop a new plugin for GDPR compliance (which will be available for free on the Marketplace). This plugin will let you edit and easily delete data of a particular user. Currently you can delete a specific user’s data by accessing the Piwik database and directly delete the different records for this specific user.
2 – You are not collecting personal data with Piwik
Unfortunately it is not because you do not collect personal data that you will not be affected by GDPR.
The details of GDPR are not confirmed yet and GDPR could involve enabling the DoNotTrack setting by default on all browsers.
Yes, you read it well, by default, unless the internet user uncheck this option, Piwik respecting DoNoTrack would not be able to track any user. If one needed to collect data anyway, Piwik Log Analytics and server-side tracking can be considered.If you need help regarding how to set up your Piwik installation in order to be GDPR compliant :
Do you have a Piwik experience you would like to share with the community ? Please share it with us by contacting Piwik core team.
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How to reduce the latency of CMAF ?
13 juin 2023, par dannyomniI implemented CMAF through a self-built nginx server with ffmpeg, but I encountered some technical bottlenecks. My latency always remains at 3 seconds and cannot be further reduced. Additionally, I'm unable to successfully implement chunked transfer.


Briefly describe my environment, I use OBS to push the live stream to the server, then transcode it on the server, and finally push the content to users through CDN.


Here is some of my code


ffmpeg :


sudo ffmpeg -i rtmp://127.0.0.1:1935/live/stream -loglevel 40 -c copy -sc_threshold 0 -g 60 -bf 0 -map 0 -f dash -strict experimental -use_timeline 1 -use_template 1 -seg_duration 1 -window_size 5 -adaptation_sets "id=0,streams=v id=1,streams=a" -streaming 1 -dash_segment_type mp4 -utc_timing_url "http://time.akamai.com/?iso" -movflags frag_keyframe+empty_moov+default_base_moof -ldash 1 -hls_playlist 1 -master_m3u8_publish_rate 1 -remove_at_exit 1 /var/www/html/live/manifest.mpd


nignx config :


server_name myserver.com;
 add_header Access-Control-Allow-Origin *;
 add_header Access-Control-Allow-Methods 'GET, POST, OPTIONS';
 add_header Access-Control-Allow-Headers 'DNT,User-Agent,X-Requested-With,If-Modified-Since,Cache-Control,Content-Type,Range';
 add_header Access-Control-Expose-Headers 'Content-Length,Content-Range';
 root /var/www/html;
 index index.html index.nginx-debian.html;
 location / {
 chunked_transfer_encoding on;
 }


html player





 
 
 
 <code class="echappe-js"><script src="https://cdn.jsdelivr.net/npm/hls.js@latest"></script>
<script src="https://cdn.dashjs.org/latest/dash.all.min.js"></script>
 


 

<script>&#xA; const video = document.getElementById(&#x27;video&#x27;);&#xA; const hlsSrc = &#x27;/live/master.m3u8&#x27;; // Replace with your HLS stream URL&#xA; const dashSrc = &#x27;/live/stream.mpd&#x27;; // Replace with your DASH stream URL&#xA;&#xA; function isHlsSupported() {&#xA; return Hls.isSupported() || video.canPlayType(&#x27;application/vnd.apple.mpegurl&#x27;);&#xA; }&#xA;&#xA; function isDashSupported() {&#xA; return !!window.MediaSource &amp;&amp; !!MediaSource.isTypeSupported(&#x27;video/mp4; codecs="avc1.4d401e,mp4a.40.2"&#x27;);&#xA; }&#xA;&#xA; if (isHlsSupported()) {&#xA; // Use HLS for playback&#xA; const hls = new Hls({&#xA; lowLatencyMode: true,// Enable low-latency mode&#xA; liveSyncDurationCount: 1, // Number of segments used to sync live stream&#xA; liveMaxLatencyDurationCount: 2,// Number of segments used to calculate the latency&#xA; maxBufferLength: 2,// Max buffer length in seconds&#xA; maxBufferSize: 1000 * 1000 * 100,// Max buffer size in bytes&#xA; liveBackBufferLength: 0// Max back buffer length in seconds (0 means back buffer disabled)&#xA; });&#xA; hls.loadSource(hlsSrc);&#xA; hls.attachMedia(video);&#xA; hls.on(Hls.Events.MANIFEST_PARSED, () => {&#xA; video.play();&#xA; });&#xA; } else if (isDashSupported()) {&#xA; // Use DASH for playback&#xA; const player = dashjs.MediaPlayer().create();&#xA; player.initialize(video, dashSrc, true);&#xA; player.updateSettings({&#xA; streaming: {&#xA; lowLatencyEnabled: true, // Enable low-latency mode&#xA; liveDelay: 1, // Set live delay in seconds, equal to 3 times the segment duration&#xA; liveCatchUpPlaybackRate: 1.2, // Playback rate for catching up when behind the live edge&#xA; liveCatchUpMinDrift: 0.5, // Minimum drift from live edge before initiating catch-up (in seconds)&#xA; bufferTimeAtTopQuality: 3, // Maximum buffer length in seconds&#xA; bufferToKeep: 0, // Duration of the back buffer in seconds (disable back buffer)&#xA; }&#xA; });&#xA; } else {&#xA; console.error(&#x27;Neither HLS nor DASH playback is supported in this browser.&#x27;);&#xA; }&#xA; </script>




I hope to reduce the latency to 1 second.


Syndiquer tout le site
