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  • 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 (...)

  • MediaSPIP v0.2

    21 juin 2013, par

    MediaSPIP 0.2 est la première version de MediaSPIP stable.
    Sa date de sortie officielle est le 21 juin 2013 et est annoncée ici.
    Le fichier zip ici présent contient uniquement les sources de MediaSPIP en version standalone.
    Comme pour la version précédente, il est nécessaire d’installer manuellement l’ensemble des dépendances logicielles sur le serveur.
    Si vous souhaitez utiliser cette archive pour une installation en mode ferme, il vous faudra également procéder à d’autres modifications (...)

  • Mise à disposition des fichiers

    14 avril 2011, par

    Par défaut, lors de son initialisation, MediaSPIP ne permet pas aux visiteurs de télécharger les fichiers qu’ils soient originaux ou le résultat de leur transformation ou encodage. Il permet uniquement de les visualiser.
    Cependant, il est possible et facile d’autoriser les visiteurs à avoir accès à ces documents et ce sous différentes formes.
    Tout cela se passe dans la page de configuration du squelette. Il vous faut aller dans l’espace d’administration du canal, et choisir dans la navigation (...)

Sur d’autres sites (7723)

  • FFMPEG Picture in picture with DASH

    24 mai 2022, par Macster

    I'm using FFMPEG to transcode a video into different resolutions and it's working fine. But now I want to merge two videos picture in picture, as one video, which then has to be transcoded into different resolutions.

    


    The command below is what I've got so far. Unfortunately, it works only for the 170p resolution. If I switch the player to 720p the overlay video is gone.

    


    I guess I have to use some kind of naming scheme for the merging files and the different resolutions, so FFMPEG can differentiate between them. But how am I going to do that ?

    


    FFMPEG Command

    


    ffmpeg \
-re \
-i "input.webm" \
-i "overlay.webm" \
-filter_complex "[1]scale=iw/3:-1[pip];[0][pip]overlay=W-w-10:10:shortest=1[v];[0:a][1:a]amerge[a]" \
-r 30 \
-usage lowlatency \
-qp_b 1 \
-quality ultrafast \
-level 2.0 \
-map "[v]" \
-map "[a]" \
-map 0 \
-c:a aac \ 
-c:v h264_qsv \
-b:v:1 1800k \
-s:v:1 1280x720 \
-b:v:0 300k \
-s:v:0 320x170 \
-profile:v:0 main \
-profile:v:1 main \
-bf 1 \
-keyint_min 30 \
-g 30 \
-sc_threshold 1 \
-b_strategy 0 \
-ar:a:1 96000 \
-seg_duration 1 \
-remove_at_exit 0 \
-streaming 1 \
-window_size 10 \
-adaptation_sets "id=0,streams=v id=1,streams=a" \
-utc_timing_url https://time.akamai.com/?iso \
-live 1 \
-f dash "manifest.mpd" 


    


  • How to merge mp4 audio dash fragment with another audio

    19 décembre 2016, par mosvov

    I have 1 audio file from dash stream

     Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'file_191282-377206_header.mp4':   Metadata:
    

    
 major_brand     : iso6
    
 minor_version   : 1
    
 compatible_brands: mp42dashmsdhmsixiso6avc1isom
    
 creation_time   : 2016-04-29T11:04:26.000000Z   Duration: 00:00:30.02, start: 14.997333, bitrate: 49 kb/s
    
 Stream #0:0(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 48 kb/s (default)

    Also in exiftool output :

     Movie Data Size                 : 180193
    
 Movie Data Offset               : 6388

    I try to merge with another audio and save metadata info like Movie Data Size/Offset and start/duration time.
    I try with ffmpeg/MP4Box commands like :

    MP4Box -new -add file_191282-377206_header.mp4 -add out000.mp4
    
ffmpeg -i file_191282-377206_header.mp4 -i out000.mp4 -codec copy -shortest output.mp4
    
ffmpeg -i file_191282-377206_header.mp4 -i out000.mp4 -filter_complex amerge -ac 2 -c:a aac output.mp4

    All the time information erased or changed.

    So question is how to merge 2 audio files inside mp4 and not change Movie Size/Offset and start/duration time ?

  • How to merge mp4 audio dash fragment with another audio

    18 mars 2019, par mosvov

    I have 1 audio file from dash stream

     Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'file_191282-377206_header.mp4':   Metadata:
    

    
 major_brand     : iso6
    
 minor_version   : 1
    
 compatible_brands: mp42dashmsdhmsixiso6avc1isom
    
 creation_time   : 2016-04-29T11:04:26.000000Z   Duration: 00:00:30.02, start: 14.997333, bitrate: 49 kb/s
    
 Stream #0:0(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 48 kb/s (default)

    Also in exiftool output :

     Movie Data Size                 : 180193
    
 Movie Data Offset               : 6388

    I try to merge with another audio and save metadata info like Movie Data Size/Offset and start/duration time.
    I try with ffmpeg/MP4Box commands like :

    MP4Box -new -add file_191282-377206_header.mp4 -add out000.mp4
    
ffmpeg -i file_191282-377206_header.mp4 -i out000.mp4 -codec copy -shortest output.mp4
    
ffmpeg -i file_191282-377206_header.mp4 -i out000.mp4 -filter_complex amerge -ac 2 -c:a aac output.mp4

    All the time information erased or changed.

    So question is how to merge 2 audio files inside mp4 and not change Movie Size/Offset and start/duration time ?

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