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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 (...)

  • Supporting all media types

    13 avril 2011, par

    Unlike most software and media-sharing platforms, MediaSPIP aims to manage as many different media types as possible. The following are just a few examples from an ever-expanding list of supported formats : images : png, gif, jpg, bmp and more audio : MP3, Ogg, Wav and more video : AVI, MP4, OGV, mpg, mov, wmv and more text, code and other data : OpenOffice, Microsoft Office (Word, PowerPoint, Excel), web (html, CSS), LaTeX, Google Earth and (...)

  • MediaSPIP Init et Diogène : types de publications de MediaSPIP

    11 novembre 2010, par

    À l’installation d’un site MediaSPIP, le plugin MediaSPIP Init réalise certaines opérations dont la principale consiste à créer quatre rubriques principales dans le site et de créer cinq templates de formulaire pour Diogène.
    Ces quatre rubriques principales (aussi appelées secteurs) sont : Medias ; Sites ; Editos ; Actualités ;
    Pour chacune de ces rubriques est créé un template de formulaire spécifique éponyme. Pour la rubrique "Medias" un second template "catégorie" est créé permettant d’ajouter (...)

Sur d’autres sites (1298)

  • FFmpeg trim .3gp and save as .mp4 not working

    11 avril 2016, par SebSob

    I am trying to trim a video input .3gp (http://www.sample-videos.com/video/3gp/144/big_buck_bunny_144p_2mb.3gp) and save it as .mp4, this is my command :

    ffmpeg -ss 00:00:00.000 -y -i input_vid.3gp -strict experimental -preset ultrafast -t 00:00:03.637 -r 30 -s 176x144 -ar 44100 -b:v 4000k -minrate 4000k -maxrate 4000k -c:a copy -vcodec mpeg4 output_vid.mp4

    But it gives me the following error :

    Setting 'pix_fmts' to value 'yuv420p'
    
query_formats: 7 queried, 6 merged, 0 already done, 0 delayed
    
w:176 h:144 fmt:yuv420p sar:12/11 -> w:176 h:144 fmt:yuv420p sar:12/11 flags:0x4
    
Automatically choosing VBV buffer size of 232 kbyte
    
intra_quant_bias = 0 inter_quant_bias = -64
    
Could not find tag for codec amr_nb in stream #1, codec not currently supported in container
    
Output #0, mp4, to 'output_vid.mp4':
    
  Metadata:
    
    major_brand     : 3gp4
    
    minor_version   : 512
    
    compatible_brands: isomiso23gp4
    
    encoder         : Lavf56.23.100
    
    Stream #0:0(und), 0, 1/15360: Video: mpeg4 ( [0][0][0] / 0x0020), yuv420p, 176x144 [SAR 12:11 DAR 4:3], q=2-31, 4000 kb/s, 30 fps, 15360 tbn, 30 tbc (default)
    
    Metadata:
    
      creation_time   : 1970-01-01 00:00:00
    
      handler_name    : VideoHandler
    
      encoder         : Lavc56.25.100 mpeg4
    
    Stream #0:1(und), 0, 1/8000: Audio: amr_nb (samr / 0x726D6173), 8000 Hz, mono, 12 kb/s (default)
    
    Metadata:
    
      creation_time   : 1970-01-01 00:00:00
    
      handler_name    : SoundHandler
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (h263 (native) -> mpeg4 (native))
    
  Stream #0:1 -> #0:1 (copy)
    
Could not write header for output file #0 (incorrect codec parameters ?): Invalid argument
    
exit_program: 1

    But it works fine if the input is an .mp4...

    Any idea’s ? Thanks

  • Which Ruby gem should I use to be able to open a video file seek to the keyframes and save them as an image ?

    10 juin 2013, par Konstantin

    I think of some ffmpeg wrapper or libav, which allow to seek to the keyframes relatively fast.

  • lavc/cbs_av1 : Save more frame ordering information

    20 mars 2024, par Mark Thompson
    lavc/cbs_av1 : Save more frame ordering information

    This is wanted by the Vulkan decoder.
    • [DH] libavcodec/cbs_av1.h
    • [DH] libavcodec/cbs_av1_syntax_template.c

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