Recherche avancée

Médias (3)

Mot : - Tags -/Valkaama

Autres articles (111)

  • 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) (...)

  • Supporting all media types

    13 avril 2011, par

    Unlike most software and media-sharing platforms, MediaSPIP aims to manage as many different media types as possible. The following are just a few examples from an ever-expanding list of supported formats : images : png, gif, jpg, bmp and more audio : MP3, Ogg, Wav and more video : AVI, MP4, OGV, mpg, mov, wmv and more text, code and other data : OpenOffice, Microsoft Office (Word, PowerPoint, Excel), web (html, CSS), LaTeX, Google Earth and (...)

  • Script d’installation automatique de MediaSPIP

    25 avril 2011, par

    Afin de palier aux difficultés d’installation dues principalement aux dépendances logicielles coté serveur, un script d’installation "tout en un" en bash a été créé afin de faciliter cette étape sur un serveur doté d’une distribution Linux compatible.
    Vous devez bénéficier d’un accès SSH à votre serveur et d’un compte "root" afin de l’utiliser, ce qui permettra d’installer les dépendances. Contactez votre hébergeur si vous ne disposez pas de cela.
    La documentation de l’utilisation du script d’installation (...)

Sur d’autres sites (4819)

  • what is a steps to apply filter to video using ffmpeg c program android ndk

    13 juillet 2016, par Rajkumar

    I am newbie to ffmpeg with android. i have an input video birds.mp4 that have following settings

    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'birds.mp4':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2avc1mp41
    
    encoder         : Lavf54.59.106
    
  Duration: 00:00:21.60, start: 0.000000, bitrate: 574 kb/s
    
    Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 320x176 [
    
SAR 44:45 DAR 16:9], 440 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
    
    Metadata:
    
      handler_name    : VideoHandler
    
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, flt
    
p, 127 kb/s (default)
    
    Metadata:
    
      handler_name    : SoundHandler

    i have compiled ffmpeg as *.so file for android. And i write a Jni wrapper. Now i want to apply a filter to that input video and save it to output.mp4 with same setting as shown. i know basic terminologies encoding, decoding, muxing, transcoding.
    I want to know How to do this task ? and What are the techniques involved to do this task ?

    I use ffmpeg-3.1 c-source code grabbed from github. i refer this sample it doesn’t guide me.

    If anybody experienced this problem please guide me right direction.

  • encode YUV420 frame to VP9

    21 novembre 2018, par User800222

    As title,

    I’m pulling frames from a IP camera. I converted the input raw data to YUV420 format, and would like to encode YUV420 to VP9, and save frames as .webm format. Would I be able to do that ? Or should I input a BGR444 format for encoding ?

    BTW, to set up the parameters for encoding vp9. Is the av_dict_set() the right function for setting parameters ?

    Ex : (http://wiki.webmproject.org/ffmpeg/vp9-encoding-guide)

    av_dict_set(&opt, "crf"    , "23", 0);
    
av_dict_set(&opt, "speed"  , "4" , 0);
    
av_dict_set(&opt, "threads", "8" , 0);
    
av_dict_set(&opt, "pass"   , "1" , 0);
    
av_dict_set(&opt, "b:v", "1400k", 0);

    Edit : The wiki uses 2 pass for setting parameters, would I be able to do in with 1 pass ?

    Edit2 : Blow code seems to be working, wonder how can I bring the size of the videos (vp9) down ? Currently, I have similar size as using h264 encoder.

        av_dict_set(&opt, "crf"    ,        "45", 0);  
    
    av_dict_set(&opt, "speed"  ,        "8" , 0); 
    
    av_dict_set(&opt, "quality",        "realtime", 0);
    
    av_dict_set(&opt, "threads",        "8" , 0);
    
    av_dict_set(&opt, "tile-columns",   "3", 0);
    
    av_dict_set(&opt, "frame-parallel", "1", 0);
    
    av_dict_set(&opt, "row-mt",         "1", 0);

    Update1 :
    YUV420P can be encoded as VP9 !

  • How to apply filter to video using ffmpeg c program android ndk

    13 juillet 2016, par Rajkumar

    I am newbie to ffmpeg with android. I have an input video birds.mp4 that have following settings

    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'birds.mp4':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2avc1mp41
    
    encoder         : Lavf54.59.106
    
  Duration: 00:00:21.60, start: 0.000000, bitrate: 574 kb/s
    
    Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 320x176 [
    
SAR 44:45 DAR 16:9], 440 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
    
    Metadata:
    
      handler_name    : VideoHandler
    
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, flt
    
p, 127 kb/s (default)
    
    Metadata:
    
      handler_name    : SoundHandler

    I have compiled ffmpeg with libx264 as *.so file for android. And i write a Jni wrapper. Now I want to apply a filter to that input video and save it to output.mp4 with same setting as shown. I know basic terminologies encoding, decoding, muxing, transcoding.
    I want to know How to do this task ? and What are the techniques involved to do this task ?

    I use ffmpeg-3.1 c-source code grabbed from github and x264 from videolan site. i refer this sample it doesn’t guide me.

    If anybody experienced this problem please guide me right direction.

Navigation