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  • 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 (...)

  • Le plugin : Podcasts.

    14 juillet 2010, par

    Le problème du podcasting est à nouveau un problème révélateur de la normalisation des transports de données sur Internet.
    Deux formats intéressants existent : Celui développé par Apple, très axé sur l’utilisation d’iTunes dont la SPEC est ici ; Le format "Media RSS Module" qui est plus "libre" notamment soutenu par Yahoo et le logiciel Miro ;
    Types de fichiers supportés dans les flux
    Le format d’Apple n’autorise que les formats suivants dans ses flux : .mp3 audio/mpeg .m4a audio/x-m4a .mp4 (...)

  • MediaSPIP v0.2

    21 juin 2013, par

    MediaSPIP 0.2 is the first MediaSPIP stable release.
    Its official release date is June 21, 2013 and is announced here.
    The zip file provided here only contains the sources of MediaSPIP in its standalone version.
    To get a working installation, you must manually install all-software dependencies on the server.
    If you want to use this archive for an installation in "farm mode", you will also need to proceed to other manual (...)

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  • Python FFmpeg : Unable to set audio output language

    15 décembre 2019, par Cryptonaut

    I’m using this Python library to programmatically generate a .MOV using a single .WAV (pcm_s24le - 24 bit - 48000 Hz) as input.

    I’ve already asked a few questions relating to other aspects of my video pipeline, seen here and here.

    All I’m trying to do is assign the eng language tag to a single audio stream in the .MOV output.

    Here’s my code :

        audio = ffmpeg.input(input_audio)
    

    
    output = ffmpeg.output(audio, output_audio,
    
    acodec='copy',
    
    audio_bitrate=bitrate,
    
    metadata='s:a:0 language=eng')
    

    
    output.run()

    The .MOV output this generates displays the following via FFprobe :

    • Stream #0:0: Audio: pcm_s24le (in24 / 0x34326E69), 48000 Hz, stereo, s32 (24 bit), 2304 kb/s (default)

    However, when I run the same input file using the same options/parameters via command line :

    • ffmpeg -y -i input_audio.wav -c:a copy -metadata:s:a:0 language=eng output_audio.mov

    FFprobe states the stream language is eng :

    • Stream #0:0(eng): Audio: pcm_s24le (in24 / 0x34326E69), 48000 Hz, stereo, s32 (24 bit), 2304 kb/s (default)

    Why is the command line approach outputting Stream #0:0(eng) but not the programmatic approach ?

  • Python FFmpeg : Unable to set audio stream language

    15 décembre 2019, par Cryptonaut

    I’m using this Python library to programmatically generate a .MOV using a single .WAV (pcm_s24le - 24 bit - 48000 Hz) as input.

    I’ve already asked a few questions relating to other aspects of my video pipeline, seen here and here.

    All I’m trying to do is assign the eng language tag to a single audio stream in the .MOV output.

    Here’s my code :

        audio = ffmpeg.input(input_audio)
    

    
    output = ffmpeg.output(audio, output_audio,
    
    acodec='copy',
    
    audio_bitrate=bitrate,
    
    metadata='s:a:0 language=eng')
    

    
    output.run()

    The .MOV output this generates displays the following via FFprobe :

    • Stream #0:0: Audio: pcm_s24le (in24 / 0x34326E69), 48000 Hz, stereo, s32 (24 bit), 2304 kb/s (default)

    However, when I run the same input file using the same options/parameters via command line :

    • ffmpeg -y -i input_audio.wav -c:a copy -metadata:s:a:0 language=eng output_audio.mov

    FFprobe states the stream language is eng :

    • Stream #0:0(eng): Audio: pcm_s24le (in24 / 0x34326E69), 48000 Hz, stereo, s32 (24 bit), 2304 kb/s (default)

    Why is the command line approach outputting Stream #0:0(eng) but not the programmatic approach ?

  • Detailed explanation of struct AVPacket

    27 juin 2013, par Appy

    I am following this tutorial to make a video player in C/C++ , using SDL and FFMpeg libraries . Unfortunately , FFMpeg libraries lack proper documentation . I am in the third part of the tutorial .
    Trying to properly understand the code requires me to understand about
    struct AVPacket completely . This is all the information I could find about AVPacket by searching it on Google :

    • 1

    • 2

    • 3

      And most of the information is redundant . Can anyone explain me atleast the first seven members of AVPacket in detail ?

    PS : What happens when we allocate an AVPacket by AVPacket pkt; ?
    What are the various members of pkt , when it is just allocated ?
    How is it different in case of static AVPacket pkt ?

    Thanks :)

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