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Médias (91)

Autres articles (36)

  • Keeping control of your media in your hands

    13 avril 2011, par

    The vocabulary used on this site and around MediaSPIP in general, aims to avoid reference to Web 2.0 and the companies that profit from media-sharing.
    While using MediaSPIP, you are invited to avoid using words like "Brand", "Cloud" and "Market".
    MediaSPIP is designed to facilitate the sharing of creative media online, while allowing authors to retain complete control of their work.
    MediaSPIP aims to be accessible to as many people as possible and development is based on expanding the (...)

  • Emballe médias : à quoi cela sert ?

    4 février 2011, par

    Ce plugin vise à gérer des sites de mise en ligne de documents de tous types.
    Il crée des "médias", à savoir : un "média" est un article au sens SPIP créé automatiquement lors du téléversement d’un document qu’il soit audio, vidéo, image ou textuel ; un seul document ne peut être lié à un article dit "média" ;

  • Les images

    15 mai 2013

Sur d’autres sites (6187)

  • Why does my stream often not have audio when started on crtmpserver ?

    19 novembre 2014, par nonlinearmind

    I’m using ffmpeg to feed source video to a server running crtmpserver which then distributes it as a rtmp stream. It works for the most part, but about half the time, when the stream is created by the source with ffmpeg, crtmpserver streams it without audio.

    To troubleshoot, I tried using Wowza in place of crtmpserver and have not had the same issue. I’m using out-of-the-box configurations for crtmpserver (and for my wowza test). My source audio and video is being sent to crtmposerver with the following pipeline :

    ffmpeg -loglevel error -f video4linux2 -video_size 640x480 -framerate
    30 -input_format yuyv422 -i /dev/video7 -f alsa -i hw:0,0 -map 0:0
    -map 1:0 -b:v 120k -bufsize 120k -vcodec libx264 -preset ultrafast -crf 28 -acodec aac -strict -2 -f flv -metadata streamName=MyStream tcp ://192.168.1.20:6666

    Does anyone know what parameter changes I might make to my crtmpserver conf to solve this problem ?

  • avformat/siff : Basic pkt_size check

    11 juillet 2024, par Michael Niedermayer
    avformat/siff : Basic pkt_size check

    Fixes : half of CID1258461 Overflowed constant
    

    Sponsored-by : Sovereign Tech Fund
    
Signed-off-by : Michael Niedermayer <michael@niedermayer.cc>
    • [DH] libavformat/siff.c

  • Cropping android video reducing its quality

    8 août 2015, par Muhammad Umar

    I am trying to encode a video in Android with ffmpeg.

    Here is the code :

    mMediaRecorder.setVideoSource(MediaRecorder.VideoSource.DEFAULT);
    
mMediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
    
mMediaRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.H264);
    
mMediaRecorder.setVideoEncodingBitRate(1024 * 1000);
    
mMediaRecorder.setVideoFrameRate(30);
    
mMediaRecorder.setVideoSize(720, 480);
    
mMediaRecorder.setOrientationHint(90);
    
mMediaRecorder.setOutputFile(VIDEO_PATH_NAME);

    FFMPEG command :

    buffer.append("ffmpeg -i /storage/emulated/0/file.mp4 -filter:v \"crop=480:480:0:0\" -preset ultrafast -r 30 /storage/emulated/0/cropped.mp4 -movflags faststart");

    The cropped file is twice the size of original file and half the quality . What is going on ? How can I make it lossless

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