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  • Encoding and processing into web-friendly formats

    13 avril 2011, par

    MediaSPIP automatically converts uploaded files to internet-compatible formats.
    Video files are encoded in MP4, Ogv and WebM (supported by HTML5) and MP4 (supported by Flash).
    Audio files are encoded in MP3 and Ogg (supported by HTML5) and MP3 (supported by Flash).
    Where possible, text is analyzed in order to retrieve the data needed for search engine detection, and then exported as a series of image files.
    All uploaded files are stored online in their original format, so you can (...)

  • Submit bugs and patches

    13 avril 2011

    Unfortunately a software is never perfect.
    If you think you have found a bug, report it using our ticket system. Please to help us to fix it by providing the following information : the browser you are using, including the exact version as precise an explanation as possible of the problem if possible, the steps taken resulting in the problem a link to the site / page in question
    If you think you have solved the bug, fill in a ticket and attach to it a corrective patch.
    You may also (...)

  • MediaSPIP Player : problèmes potentiels

    22 février 2011, par

    Le lecteur ne fonctionne pas sur Internet Explorer
    Sur Internet Explorer (8 et 7 au moins), le plugin utilise le lecteur Flash flowplayer pour lire vidéos et son. Si le lecteur ne semble pas fonctionner, cela peut venir de la configuration du mod_deflate d’Apache.
    Si dans la configuration de ce module Apache vous avez une ligne qui ressemble à la suivante, essayez de la supprimer ou de la commenter pour voir si le lecteur fonctionne correctement : /** * GeSHi (C) 2004 - 2007 Nigel McNie, (...)

Sur d’autres sites (11333)

  • avformat/mov : Enable stream parsing for VP9.

    7 septembre 2016, par Matthew Gregan
    avformat/mov : Enable stream parsing for VP9.

    MP4 media containing VP9 using superframes (such as
    
https://github.com/Netflix/vp9-dash/raw/master/DASH-Samples/Fountain_2997_0560kbps_640x480_4x3PAR.ivf_DashUnencrypted.ismv)
    
does not decode correctly with the built-in VP9 decoder because
    
superframes are passed to the decoder whole rather than split into
    
individual frames.
    

    Signed-off-by : Matthew Gregan <kinetik@flim.org>
    • [DH] libavformat/mov.c

  • How to not add AdaptationSet for audio if audio stream is not present in input file

    13 juin 2019, par Saurabh

    I am using ffmpeg-dash to create mpd files. I am using following command to generate the same :

    ffmpeg -i input/video.mov \
    
        -map 0:v:0 -map 0:v:0 -map 0:v:0 -map 0:a\?:0 \
    
        -b:v:0 350k -c:v:0 libx264 -filter:v:0 "scale=320:-1" \
    
        -b:v:1 1000k -c:v:1 libx264 -filter:v:1 "scale=640:-1" \
    
        -b:v:2 3000k -c:v:2 libx264 -filter:v:2 "scale=1280:-1" \
    
        -use_timeline 1 -use_template 1 -window_size 6  -adaptation_sets "id=0,streams=v id=1,streams=a"  \
    
        -seg_duration 2 -threads 16 -hls_playlist true -f dash output/ffmpeg/output.mpd

    This works with video which has audio streams, but for the case there is no audio stream in the video file, I get empty entry for audio in mpd files like following, which is not valid and fails while playing in Exo Player in Android.

    <adaptationset contenttype="audio" segmentalignment="true" bitstreamswitching="true">
    
</adaptationset>

    I tried adding ? in option adaptation_sets like : id=0,streams=v id=1,streams=a?, however that also adds above line.

    One solution is to run different commands for different videos by first checking whether there is audio stream or not, but would be better if there is some option which add audio adaptationSet only if audio stream is present in the input file.

  • webm_dash_manifest : Add option to specify bandwidth

    12 avril 2017, par Vignesh Venkatasubramanian
    webm_dash_manifest : Add option to specify bandwidth

    Add an option to webm_dash_manifest demuxer to specify a value for
    
"bandwidth" field in the DASH manifest. The value is then used by
    
the muxer. Fixes an existing FIXME in the code.
    

    Signed-off-by : Vignesh Venkatasubramanian <vigneshv@google.com>
    
Signed-off-by : James Zern <jzern@google.com>
    • [DH] libavformat/matroskadec.c
    • [DH] libavformat/webmdashenc.c
    • [DH] tests/fate/vpx.mak
    • [DH] tests/ref/fate/webm-dash-manifest-live-bandwidth

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