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Autres articles (102)

  • HTML5 audio and video support

    13 avril 2011, par

    MediaSPIP uses HTML5 video and audio tags to play multimedia files, taking advantage of the latest W3C innovations supported by modern browsers.
    The MediaSPIP player used has been created specifically for MediaSPIP and can be easily adapted to fit in with a specific theme.
    For older browsers the Flowplayer flash fallback is used.
    MediaSPIP allows for media playback on major mobile platforms with the above (...)

  • Librairies et binaires spécifiques au traitement vidéo et sonore

    31 janvier 2010, par

    Les logiciels et librairies suivantes sont utilisées par SPIPmotion d’une manière ou d’une autre.
    Binaires obligatoires FFMpeg : encodeur principal, permet de transcoder presque tous les types de fichiers vidéo et sonores dans les formats lisibles sur Internet. CF ce tutoriel pour son installation ; Oggz-tools : outils d’inspection de fichiers ogg ; Mediainfo : récupération d’informations depuis la plupart des formats vidéos et sonores ;
    Binaires complémentaires et facultatifs flvtool2 : (...)

  • Contribute to translation

    13 avril 2011

    You can help us to improve the language used in the software interface to make MediaSPIP more accessible and user-friendly. You can also translate the interface into any language that allows it to spread to new linguistic communities.
    To do this, we use the translation interface of SPIP where the all the language modules of MediaSPIP are available. Just subscribe to the mailing list and request further informantion on translation.
    MediaSPIP is currently available in French and English (...)

Sur d’autres sites (6681)

  • Overlaying video with text - ffmpeg speed

    12 février 2017, par Sebadc

    I’m developing an app that has a functionality similar to Snapchat’s, in which you can add text to an existing video and save it on your phone.

    I got this to work using ffmpeg’s "-drawtext" filter. The problem is that I’m getting a noticable delay (20 seconds or so) when adding text to videos, even though they are not too big (around 10 seconds length).

    Can anyone point me in the right direction on how to reduce this delay ? Taking Snapchat as reference, they overlay high quality videos with text with little to no delay.

    I’ve read about extracting the video’s frames and overlaying them manually, but shouldn’t that take longer ?

    Thank you for your help.

  • ffmpeg : How to change video duration (slow-down or speed-up) to exact value ?

    2 février 2017, par Moo

    I have miltiple videos with different durations and need to always set it to be exactly 10 seconds.

    I know that I can use -filter:v "setpts=speed*duration" but is there any way to make a universal one-line function to convert any-duration video to 10 seconds video ?

  • Howto speed up Video Streaming with ffserver and ffmpeg + x265

    30 mars 2016, par binaryCode

    Below my ffserver.conf :

    Port 8090                      # Port to bind the server to
    
BindAddress 0.0.0.0
    
MaxHTTPConnections 2000
    
MaxClients 1000
    
MaxBandwidth 10000             # Maximum bandwidth per client
    
                           # set this high enough to exceed stream bitrate
    
CustomLog -
    
#NoDaemon                       # Remove this if you want FFserver to    daemonize after start
    

    
<feed>               # This is the input feed where FFmpeg will send
    
 File /tmp/feed1.ffm            # video stream.
    
 FileMaxSize 1G              # Maximum file size for buffering video            # Allowed IPs
    
 ACL allow 127.0.0.1
    
</feed>
    

    
<stream>                       # Output stream URL definition
    
  Feed feed1.ffm              # Feed from which to receive video
    
  Format matroska
    

    
  # Audio settings
    
  AudioCodec vorbis
    
  AudioBitRate 64             # Audio bitrate
    

    
  # Video settings
    
  VideoCodec libx265
    
  VideoSize 720x576           # Video resolution
    
  VideoFrameRate 25           # Video FPS
    
  AVOptionVideo flags +global_header  # Parameters passed to encoder
    
                                   # (same as ffmpeg command-line  parameters)
    
  #AVOptionVideo cpu-used 0
    
  AVOptionVideo qmin 10
    
  AVOptionVideo qmax 42
    
  #AVOptionVideo quality good
    
  AVOptionAudio flags +global_header
    
  PreRoll 15
    
  StartSendOnKey
    
  VideoBitRate 400            # Video bitrate
    
 </stream>
    

    
 <stream>                    # Server status URL
    
   Format status
    
   # Only allow local people to get the status
    
   ACL allow localhost
    
  ACL allow 0.0.0.0
    
 </stream>
    

    
 <redirect>    # Just an URL redirect for index
    
    # Redirect index.html to the appropriate site
    
    URL http://www.ffmpeg.org/
    
 </redirect>

    and below is ffmpeg command to send my usb camera :

    c:\ffmpeg\bin\ffmpeg -f dshow -i video="A4TECH USB2.0 PC Camera"  -r 25 -s 320x240 -vcodec libx265 -preset ultrafast -tune zerolatency  http://119.81.216.43:8090/feed1.ffm

    ffmpeg running from my notebook with processor corei7 from Indonesia, and ffserver using ubuntu 14.x on ibm soflayer singapore,

    with above configuration i can play video streaming with 4s delay

    myquestion : howto improve speed so i can play video less than or equal 1 second, any idea ?

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