Recherche avancée

Médias (91)

Autres articles (108)

  • 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) (...)

  • Publier sur MédiaSpip

    13 juin 2013

    Puis-je poster des contenus à partir d’une tablette Ipad ?
    Oui, si votre Médiaspip installé est à la version 0.2 ou supérieure. Contacter au besoin l’administrateur de votre MédiaSpip pour le savoir

  • Selection of projects using MediaSPIP

    2 mai 2011, par

    The examples below are representative elements of MediaSPIP specific uses for specific projects.
    MediaSPIP farm @ Infini
    The non profit organizationInfini develops hospitality activities, internet access point, training, realizing innovative projects in the field of information and communication technologies and Communication, and hosting of websites. It plays a unique and prominent role in the Brest (France) area, at the national level, among the half-dozen such association. Its members (...)

Sur d’autres sites (6771)

  • Unable to get a frame using ffmpeg [closed]

    24 mars 2023, par Prakhar

    I have an SRT stream, which I am listening on an Ubuntu server. I want to be able to take a frame as a PNG at any given time, so that I can analyze that image. Given that it's a live stream, I should not be defining time of when do I want to download the frame, it should be instantaneous.

    


    I tried following but in vain

    


    ffmpeg -i 'srt://10.174.190.221:5000?streamid=ABCDE' %04d.png


    


    This just starts the streaming, and does not produce the PNG files. Output which I get on screen

    


        Last message repeated 1 times
[h264 @ 0x7317c80] decode_slice_header error
[h264 @ 0x7317c80] non-existing PPS 0 referenced
[h264 @ 0x7317c80] decode_slice_header error
[h264 @ 0x7317c80] non-existing PPS 0 referenced
[h264 @ 0x7317c80] decode_slice_header error
[h264 @ 0x7317c80] non-existing PPS 0 referenced
[h264 @ 0x7317c80] decode_slice_header error
[h264 @ 0x7317c80] no frame!
[h264 @ 0x7317c80] non-existing PPS 0 referenced
    Last message repeated 1 times
[h264 @ 0x7317c80] decode_slice_header error
[h264 @ 0x7317c80] non-existing PPS 0 referenced
[h264 @ 0x7317c80] decode_slice_header error
[h264 @ 0x7317c80] non-existing PPS 0 referenced
[h264 @ 0x7317c80] decode_slice_header error
[h264 @ 0x7317c80] non-existing PPS 0 referenced
[h264 @ 0x7317c80] decode_slice_header error
[h264 @ 0x7317c80] no frame!
[h264 @ 0x7317c80] non-existing PPS 0 referenced
    Last message repeated 1 times
[h264 @ 0x7317c80] decode_slice_header error
[h264 @ 0x7317c80] non-existing PPS 0 referenced
[h264 @ 0x7317c80] decode_slice_header error
[h264 @ 0x7317c80] non-existing PPS 0 referenced
[h264 @ 0x7317c80] decode_slice_header error
[h264 @ 0x7317c80] non-existing PPS 0 referenced
[h264 @ 0x7317c80] decode_slice_header error
[h264 @ 0x7317c80] no frame!
[h264 @ 0x7317c80] non-existing PPS 0 referenced
    Last message repeated 1 times
[h264 @ 0x7317c80] decode_slice_header error
[h264 @ 0x7317c80] non-existing PPS 0 referenced
[h264 @ 0x7317c80] decode_slice_header error
[h264 @ 0x7317c80] non-existing PPS 0 referenced
[h264 @ 0x7317c80] decode_slice_header error
[h264 @ 0x7317c80] non-existing PPS 0 referenced
[h264 @ 0x7317c80] decode_slice_header error
[h264 @ 0x7317c80] no frame!
[h264 @ 0x7317c80] non-existing PPS 0 referenced
    Last message repeated 1 times
[h264 @ 0x7317c80] decode_slice_header error
[h264 @ 0x7317c80] non-existing PPS 0 referenced
[h264 @ 0x7317c80] decode_slice_header error
[h264 @ 0x7317c80] non-existing PPS 0 referenced
[h264 @ 0x7317c80] decode_slice_header error
[h264 @ 0x7317c80] non-existing PPS 0 referenced
[h264 @ 0x7317c80] decode_slice_header error
[h264 @ 0x7317c80] no frame!
[h264 @ 0x7317c80] non-existing PPS 0 referenced
    Last message repeated 1 times
[h264 @ 0x7317c80] decode_slice_header error
[h264 @ 0x7317c80] non-existing PPS 0 referenced
[h264 @ 0x7317c80] decode_slice_header error
[h264 @ 0x7317c80] non-existing PPS 0 referenced
[h264 @ 0x7317c80] decode_slice_header error
[h264 @ 0x7317c80] non-existing PPS 0 referenced
[h264 @ 0x7317c80] decode_slice_header error
[h264 @ 0x7317c80] no frame!

Input #0, mpegts, from 'srt://10.174.190.221:5000?streamid=ABCDE':
  Duration: N/A, start: 61221.726022, bitrate: N/A
  Program 1 
    Metadata:
      service_name    : ABCDE
      service_provider: VITEC
  Stream #0:0[0x4da]: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p(tv, bt709, progressive), 1920x1080 [SAR 1:1 DAR 16:9], 59.94 fps, 59.94 tbr, 90k tbn
  Stream #0:1[0x2d](eng): Audio: aac (LC) ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp, 128 kb/s
Stream mapping:
  Stream #0:0 -> #0:0 (h264 (native) -> png (native))
Press [q] to stop, [?] for help
Finishing stream 0:0 without any data written to it.
Output #0, image2, to '%04d.png':
  Metadata:
    encoder         : Lavf59.27.100
  Stream #0:0: Video: png, rgb24, 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 59.94 fps, 59.94 tbn
    Metadata:
      encoder         : Lavc59.37.100 png
frame=    0 fps=0.0 q=0.0 Lsize=N/A time=00:00:00.00 bitrate=N/A speed=   0x    
video:0kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown


    


    Would appreciate any help

    


  • Imageio unable to read webcam at correct framerate

    28 mai 2019, par Jason Nick Porter

    I’m trying to read frames from a webcam and analyze them in realtime, but since my function AnalyzeFrame() is faster than the framerate, it ends up pulling the same frame 1-4 times in a row, messing up my data. Here’s basically what I’m running.

    import imageio
    

    
cam = imageio.get_reader('<video0>', fps=30)
    

    
while not cam.closed:
    
    print(AnalyzeFrame(cam.get_next_data()))
    
</video0>

    A few notes : My webcam should be able to handle 30fps, but I’m averaging 12-14 fps. I’ve timed each individual process and there’s very little regularity to the framerate. Some frames only get analyzed once, because they’re in the buffer for 20 or so milliseconds. Others get analyzed 4 times over a span of 100+ ms. Is there something in my code that’s causing this framerate problem ?

  • Add metadata to flv files with ffmpeg instead of flvmdi

    30 juillet 2012, par user1476852

    I have made a player for stream flv movies in flash with netstream but it needs some metadata information named " keyframe " containing two array of times and positions , some flv videos have this meta data and some not , i could add the keyframe metadata with a program named "flvmdi" and player worked properly , but i can`t install this software on my server for some reasons.
    I know that we can add metadata to a movie with ffmpeg function in PHP .
    Can i use ffmpeg function in PHP to add keyframe arrays as metadata to flv file ?
    How can we make times and positions arrays to inject to a flv file with ffmpeg in php ?

Navigation