Recherche avancée

Médias (3)

Mot : - Tags -/collection

Autres articles (63)

  • Les autorisations surchargées par les plugins

    27 avril 2010, par

    Mediaspip core
    autoriser_auteur_modifier() afin que les visiteurs soient capables de modifier leurs informations sur la page d’auteurs

  • Support de tous types de médias

    10 avril 2011

    Contrairement à beaucoup de logiciels et autres plate-formes modernes de partage de documents, MediaSPIP a l’ambition de gérer un maximum de formats de documents différents qu’ils soient de type : images (png, gif, jpg, bmp et autres...) ; audio (MP3, Ogg, Wav et autres...) ; vidéo (Avi, MP4, Ogv, mpg, mov, wmv et autres...) ; contenu textuel, code ou autres (open office, microsoft office (tableur, présentation), web (html, css), LaTeX, Google Earth) (...)

  • Support audio et vidéo HTML5

    10 avril 2011

    MediaSPIP 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 (8117)

  • Linux : Create a file for writing with controlled flushing to disk in large chunks [closed]

    12 août 2023, par Pete

    On Linux I have a process (ffmpeg) that writes very slowly (even slower than 1kb / s sometimes) to disk. Ffmpeg can buffer this to 256kb chunks that get written infrequently but ffmpeg hangs occasionally and if I try to detect these hangs by checking that the file is being updated I need to wait a long time between updates, up to 10 or 15 mins, otherwise I can sometimes mistakenly kill the ffmpeg process when it appears to have stopped writing when it fact its still filling its internal buffer.

    


    Theres no way to detect this it seems unless I use strace (that I can find anyway). So I am wondering about turning off buffering in ffmpeg and writing unbuffered to disk from ffmpeg.

    


    This will result in the disk constantly making tiny writes and wasting power (and probably, if I use a SSD, mess with wear levelling too).

    


    So I would like to make ffmpeg write to a 'virtual file' (in memory - either kernel memory or a process) which I can specify the flushing characteristics of. The idea being to perhaps specify flush every 2 minutes, then I can keep an eye on the file size and make sure its still being written.

    


    I don't think I've missed any other ways to do this job - even if I could watch the socket stream incoming to ffpmeg the process itself could still stop writing and lose data. Doing the buffering outside of ffmpeg seems like the best way.

    


    Is there a built in way to do this in Linux or does it mean a custom process ? I guess I know how to do this with a small C program and pipe the data in but I wonder if theres a neater way.

    


  • rtmp module stream do not , how to solve that ?

    24 avril 2019, par Duxo

    I have some problem with configuring nginx+rtk-module.
    I need to stream a video from IP camera to web-site. I use MPEG-DASH.My server configuration is lower. Files .m4a, .m4v are creating and I also have stream.mpd file. But in browser it doen’t work, inifinity loading. some logs from dash.js 

    Time: 0
    
dash.all.js:2:10794
    
Array(6) [ {…}, {…}, {…}, {…}, {…}, {…} ]
    
dash.all.js:2:10818
    
Index for time 0 is -1
    
dash.all.js:3:8722
    
Checking for stream end...
    
dash.all.js:3:8722
    
Live never ends! (TODO)
    
dash.all.js:3:8722
    
Stream finished? false
    
dash.all.js:3:8722
    
Got a request.
    
dash.all.js:3:8722
    
null
    
dash.all.js:3:8722
    
BufferController video setState to:READY
    
dash.all.js:3:8722
    
Working time is video time: 0
    
dash.all.js:3:8722
    
BufferController.validate() video | state: READY
    
dash.all.js:3:8722
    
video Playback rate: 0
    
dash.all.js:3:8722
    
video Working time: 0
    
dash.all.js:3:8722
    
video Video time: 0
    
dash.all.js:3:8722
    
Current video buffer length: 0
    
dash.all.js:3:8722
    
BufferController video setState to:VALIDATING
    
dash.all.js:3:8722
    
ABR enabled? (true)
    
dash.all.js:3:8722
    
Check ABR rules.
    
dash.all.js:3:8722
    
Checking download ratio rule...
    
dash.all.js:3:8722
    
Total time: 0.009s
    
dash.all.js:3:8722
    
Download time: 0.009s
    
dash.all.js:3:8722
    
The ratios are NaN, bailing.
    
dash.all.js:3:8722
    
Checking insufficient buffer rule...
    
dash.all.js:3:8722
    
Not enough information for rule.
    
dash.all.js:3:8722
    
Array [ {…}, {…} ]
    
dash.all.js:3:8722
    
New quality of 0
    
dash.all.js:3:8722
    
video Playback quality: 0
    
dash.all.js:3:8722
    
Populate video buffers.
    
dash.all.js:3:8722
    
Quality didn't change.
    
dash.all.js:3:8722
    
Loading the video fragment for time: 0
    
dash.all.js:3:8722
    
Getting the request for time: 0
    
dash.all.js:3:8722
    
Got segments.
    
dash.all.js:3:8722
    
Array(6) [ {…}, {…}, {…}, {…}, {…}, {…} ]
    
dash.all.js:3:8722
    
Got a list of segments, so dig deeper.
    
dash.all.js:3:8722
    
Couldn't figure out a time!
    
dash.all.js:2:10751
    
Time: 0
    
dash.all.js:2:10794
    
Array(6) [ {…}, {…}, {…}, {…}, {…}, {…} ]
    
dash.all.js:2:10818
    
Index for time 0 is -1
    
dash.all.js:3:8722
    
Checking for stream end...
    
dash.all.js:3:8722
    
Live never ends! (TODO)
    
dash.all.js:3:8722
    
Stream finished? false
    
dash.all.js:3:8722
    
Got a request.
    
dash.all.js:3:8722
    
null
    
dash.all.js:3:8722
    
BufferController video setState to:READY
    
dash.all.js:3:8722
    
Working time is video time: 0
    
dash.all.js:3:8722
    
BufferController.validate() video | state: READY
    
dash.all.js:3:8722
    
video Playback rate: 0
    
dash.all.js:3:8722
    
video Working time: 0
    
dash.all.js:3:8722
    
video Video time: 0
    
dash.all.js:3:8722
    
Current video buffer length: 0
    
dash.all.js:3:8722
    
BufferController video setState to:VALIDATING
    
dash.all.js:3:8722
    
ABR enabled? (true)
    
dash.all.js:3:8722
    
Check ABR rules.
    
dash.all.js:3:8722
    
Checking download ratio rule...
    
dash.all.js:3:8722
    
Total time: 0.009s
    
dash.all.js:3:8722
    
Download time: 0.009s
    
dash.all.js:3:8722
    
The ratios are NaN, bailing.
    user some_user;
    
worker_processes  1;
    

    
events {
    
    worker_connections  1024;
    
}
    

    
rtmp {
    
    live on;
    
    dash on;
    
    server {
    
        listen 1935;
    
        application cams {
    
        dash_path /cams;
    
    }
    
        exec_static ffmpeg -i
    
 rtsp://admin:admin@192.168.0.51/1/Streaming/Channels/1/ -c:v libx264 -q:v 31 -an -profile:v baseline -ar 44100
    
 -f flv rtmp://0.0.0.0/cams/stream;
    

    
    }
    
}
    

    
http {
    
    include       mime.types;
    
    default_type  application/octet-stream;
    

    
    sendfile        on;
    

    
    #keepalive_timeout  0;
    
    keepalive_timeout  65;
    

    

    
    server {
    
        listen       80;
    
        server_name  localhost;
    

    
        location / {
    
            root /;
    
        }
    

    
        error_page   500 502 503 504  /50x.html;
    
        location = /50x.html {
    
            root   html;
    
        }
    

    
}

    Can someone explain me why stream is not working and how to issue that ?thanks

  • Arguments set but not used in GPAC

    30 avril 2022, par M faiz zeeshann

    I am trying to do the tiling of a 360-degree video with the following command.

    


    MP4Box -dash 1000 test.mp4 :"desc_as="

    


    it creates an MPD file but without tiles and gives the following errors.

    


    Arg segdur set but not used,
Arg mpeg set but not used,
Arg dash set but not used,
Arg srd set but not used,
Arg 2014 set but not used,

    


Navigation