Recherche avancée

Médias (1)

Mot : - Tags -/censure

Autres articles (39)

  • Use, discuss, criticize

    13 avril 2011, par

    Talk to people directly involved in MediaSPIP’s development, or to people around you who could use MediaSPIP to share, enhance or develop their creative projects.
    The bigger the community, the more MediaSPIP’s potential will be explored and the faster the software will evolve.
    A discussion list is available for all exchanges between users.

  • 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 (...)

  • Organiser par catégorie

    17 mai 2013, par

    Dans MédiaSPIP, une rubrique a 2 noms : catégorie et rubrique.
    Les différents documents stockés dans MédiaSPIP peuvent être rangés dans différentes catégories. On peut créer une catégorie en cliquant sur "publier une catégorie" dans le menu publier en haut à droite ( après authentification ). Une catégorie peut être rangée dans une autre catégorie aussi ce qui fait qu’on peut construire une arborescence de catégories.
    Lors de la publication prochaine d’un document, la nouvelle catégorie créée sera proposée (...)

Sur d’autres sites (4557)

  • ffmpeg merge two mp4 will lose 2nd audio

    28 septembre 2017, par user8687516

    Desc

    merge two mp4 file will lose 2nd audio

    1st mp4 and 2nd mp4 will be ok, have img and audio both

    but when merge to output, 2nd audio only play about 5 seconds.

    Version information

    ffmpeg version : 3.3.4

    OS : macos

    Command

    input test3.mp4 -> file size: 300k
    

    
input test4.mp4 -> file size: 285k

    cmd

    ffmpeg -i test3.mp4 -i test4.mp4 -y -filter_complex '[0:0] [0:1] [1:0] 
    
[1:1] concat=n=2:v=1:a=1 [v] [a];[v] fifo [v1];[a] afifo [a1]' -map 
    
'[v1]' -map '[a1]' output.mp4

    std


  • libavcodec/xsubenc.c : Fix bounding box coordinates

    7 novembre 2013, par Erik Olofsson
    libavcodec/xsubenc.c : Fix bounding box coordinates

    Fix coordinates of the lower right corner of the text area.
    
Note that the coordinates are redundant as the size and
    
position of the text area are known.
    
Many decoders (including Sony Playstation 3, VLC and FFmpeg)
    
ignore the redundant coordinates.
    
Some hardware decoders need them for correct playback.
    

    Verified on Philips DVD player models HTS7201 and DVP3380.
    

    Fixes ticket #3031
    

    Signed-off-by : Erik Olofsson <eaj.olofsson@gmail.com>
    
Reviewed-by : Reimar Döffinger <Reimar.Doeffinger@gmx.de>
    
Signed-off-by : Michael Niedermayer <michaelni@gmx.at>
    • [DH] libavcodec/xsubenc.c

  • Streaming opencv to youtube with ffmpeg

    29 juin 2020, par Tim Treurniet

    I am trying to live stream to youtube from a c++ opencv project. Currently, my program outputs a RTMP stream which nginx should push to youtube. A problem I'm having is youtube's requirement for an audio stream.

    &#xA;

    I'm trying a workaround by restreaming using ffmpeg. It adds an empty audio stream (not efficient). Another issue is the output speed of my program which is around 10 fps. When playing in vlc or youtube, the stream buffers for a while and plays a few seconds of smooth video. How should I set this up in c++ to play a constant stream with lower fps, including an empty audio stream ?&#xA;Example I used : https://github.com/andreanobile/opencv_ffmpeg_streaming

    &#xA;

    FFMPEG for adding audio :&#xA;ffmpeg -f lavfi -i anullsrc=channel_layout=stereo:sample_rate=44100 -hwaccel cuvid -i rtmp ://localhost/live -vf scale=3840:2160 -c:v h264_nvenc -preset fast -maxrate 6000k -pix_fmt yuv420p -g 50 -b:a 160k -ac 2 -c:a aac -f flv rtmp ://a.rtmp.youtube.com/live2/

    &#xA;

Navigation