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Autres articles (102)

  • Websites made ​​with MediaSPIP

    2 mai 2011, par

    This page lists some websites based on MediaSPIP.

  • Use, discuss, criticize

    13 avril 2011, par

    Talk to people directly involved in MediaSPIP’s development, or to people around you who could use MediaSPIP to share, enhance or develop their creative projects.
    The bigger the community, the more MediaSPIP’s potential will be explored and the faster the software will evolve.
    A discussion list is available for all exchanges between users.

  • 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 (...)

Sur d’autres sites (6976)

  • ffprobe how to retrieve both audio and video info and output to single line ?

    16 novembre 2018, par gregm

    I can use the following to retrieve the audio and video codec and the video frame height :

    ffprobe -v quiet -show_entries stream=index,codec_name,height -of csv input.mp4

    But the output is on two lines and includes text that I don’t need like so :

    stream,0,h264,720
    
stream,1,mp3

    The only output I want is to be in the form of :

    mp3,h264,720

    I’ve tried using -show_entries twice in the same command line, but it ignores the first call every time. I’ve also tried using

    ffprobe -v quiet -select_streams v -show_entries stream=codec_name,height, -select_streams a -show_entries stream=codec_name

    but that doesn’t do anything.

    How can I get the simplified output as specified above ?

  • AVI INFO crashes the Octave GUI every time I try to run the code

    18 mai 2017, par Sulphur

    I am trying to run a code in octave which requires reading frame info of a video file. However, it always crashes when I write the aviinfo. The line goes as this :

    > vInfo = aviinfo('C:\devwork\Octave\boosted\resizedVideos\11-50-48--11-50-58_resized.mp4');

    I realized that I did not have FFmpeg installed on my system. I did install it but still it crashes. Any idea why ? How should I solve it ?

    While looking for solutions I came across this discussion which says there is a possibility of an "unfortunate interplay between the Octave code and the ffmpeg code. But I am unable to figure out why ?

  • mp4 files / SSTS info

    3 avril 2017, par Thomas

    I am trying to find the fastest way to get a list of all I-frames in a movie.

    So far, I tried ffprobe, but it is quite slow and I have been looking for a faster solution.

    The other option I found is using the mp4parser tool ; it outputs a file with this sectio, the SSTS info :

    -------------------------------------------------------------------------
    
/moov/trak/mdia/minf/stbl/stss                              @ 0x1c152d8
    
  Box size: 0x44    version: 0x0    flags: 0x0
    
  entry_count:              0xd
    
    sample_number:
    
     0x1    0x12d    0x259    0x385    ....

    I can see that I have 13 I frames and they’re spaced 300 frames apart (from the 4 values displayed)

    Is the spacing of I frames constant through movies ? or do I need to write my own SSTS parser to get the whole list ?

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