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  • 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 (...)

  • De l’upload à la vidéo finale [version standalone]

    31 janvier 2010, par

    Le chemin d’un document audio ou vidéo dans SPIPMotion est divisé en trois étapes distinctes.
    Upload et récupération d’informations de la vidéo source
    Dans un premier temps, il est nécessaire de créer un article SPIP et de lui joindre le document vidéo "source".
    Au moment où ce document est joint à l’article, deux actions supplémentaires au comportement normal sont exécutées : La récupération des informations techniques des flux audio et video du fichier ; La génération d’une vignette : extraction d’une (...)

  • 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 : (...)

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  • Concatenate DASH audio and video to single file

    18 mars 2019, par Andreas

    First of all, I have a folder with about 200 video and audio segments (m4v and m4a) of a video that was live streamed as DASH video. Now - without having the original file - I want to concatenate those parts to a single, playable video file.

    To mention what I already tested :

    • concatenate via the Unix terminal command cat ; unfortunately this won’t help to make the video playable in any media player again
    • using ffmpeg’s merge abilities via files.txt ; with the same unsuccessful result

    I’m definitely not an expert (otherwise I probably wouldn’t ask) but the problem may be also the missing mpd and/or init file (as far as I could skim in the standard).

    Don’t get me wrong : I don’t want to get a bit to bit identical result of the original file. All I want to achieve is a single playable mp4 file of aforesaid video.

    I also tried to make a own mpd file, but the "stream" won’t play. FYI, I tried playing it in the current VLC 3.0.0 git, since the current stable versions seems not to support DASH.
    If it helps, here the video codec :

    id="live-hd_H264"
    
mimeType="video/mp4"
    
codecs="avc1.4d401f"
    
width="396"
    
height="704"

    So, can anybody help me ?

    Kind regards !

  • Concatenate DASH audio and video to single file

    13 mars 2017, par Andreas

    First of all, I have a folder with about 200 video and audio segments (m4v and m4a) of a video that was live streamed as DASH video. Now - without having the original file - I want to concatenate those parts to a single, playable video file.

    To mention what I already tested :

    • concatenate via the Unix terminal command cat ; unfortunately this won’t help to make the video playable in any media player again
    • using ffmpeg’s merge abilities via files.txt ; with the same unsuccessful result

    I’m definitely not an expert (otherwise I probably wouldn’t ask) but the problem may be also the missing mpd and/or init file (as far as I could skim in the standard).

    Don’t get me wrong : I don’t want to get a bit to bit identical result of the original file. All I want to achieve is a single playable mp4 file of aforesaid video.

    I also tried to make a own mpd file, but the "stream" won’t play. FYI, I tried playing it in the current VLC 3.0.0 git, since the current stable versions seems not to support DASH.
    If it helps, here the video codec :

    id="live-hd_H264"
    
mimeType="video/mp4"
    
codecs="avc1.4d401f"
    
width="396"
    
height="704"

    So, can anybody help me ?

    Kind regards !

  • Encoding and segmenting HD video for DASH [closed]

    13 mars 2013, par user2163937

    I am trying to encode video for implementing DASH, for encoding I am using this command line...

    ffmpeg -i sample.ts -f mpegts -acodec libfaac -ar 44100 -ab 64k -s 480x270
    
-vcodec libx264 -b 500k -r 25 -flags +loop -partitions
    
+parti4x4+partp8x8+partb8x8 -subq 5 -refs 6  -keyint_min 10 -i_qfactor 0.71 
    
-maxrateD 500k -bufsize 500k -rc_eq 'blurCplx^(1-qComp)' -qmin 10 -qmax 51
    
-qdiff 4 -level 30 -aspect 16:9 -g 30 -async 2 out.ts

    For segmentation I use this command line

    ffmpeg -i out.ts -c copy -map 0 -f ssegment -segment_time 4 -segment_list
    
out.list seg%d.ts  

    And I use the various resolutions and parameters according to the table given in this link.

    Given resolutions and parameters are working fine for me, I can able to get smooth transition among various resolutions. But problem arises when I try to use HD resolution i.e 1280x720, there is a visible flicker when video switches from HD to other resolution or vice-versa. I cannot figure out the problem.

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