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  • 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 (...)

  • 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 (...)

  • Les vidéos

    21 avril 2011, par

    Comme les documents de type "audio", Mediaspip affiche dans la mesure du possible les vidéos grâce à la balise html5 .
    Un des inconvénients de cette balise est qu’elle n’est pas reconnue correctement par certains navigateurs (Internet Explorer pour ne pas le nommer) et que chaque navigateur ne gère en natif que certains formats de vidéos.
    Son avantage principal quant à lui est de bénéficier de la prise en charge native de vidéos dans les navigateur et donc de se passer de l’utilisation de Flash et (...)

Sur d’autres sites (4099)

  • FFMpeg - Concat Video Files + Crossfade ?

    16 février 2020, par John Doe

    Using BATCH-File, I am piping lots of videos to FFMpeg and would like to crossfade the transitions. Instead of going to black, I’d like them to overlap by 2 seconds during the transition. Audio is not necessary as the videos are all silent. I am adding looped audio separately.

    (
    
for /F %%i in ('dir /b "Folder\*.mp4"') do @echo file 'Folder/%%i'
    
) | ffmpeg -y -protocol_whitelist file,pipe -f concat -safe 0 -stream_loop -1 -i pipe: -stream_loop -1 -i "audio.mp3" -c copy -movflags faststart -fflags genpts -preset veryfast -t 3600 -r 30 "output.mp4"

    I’ve found lots of similar examples online but none are suitable. A little help would be appreciated. Thank you.

  • Process audio and video independently

    27 février 2012, par Eric

    due to the unpopularity of my last posts here and here , I'll try something else.
    I have corresponding audio (.wav) and video files (.mpg). Let's consider that those two streams where recorded synchronously. I want to process both stream, with opencv for the images, and with "I don't know which audio lib" (you tell me ?) for audio, and I want to process those streams online and keep the synchronicity.
    Note that the length of the video is less that 2 minutes.

    Thanks for any help !

  • Convert pcm_s16le audio to mp3 (in php with ffmpeg/sox/...) ?

    4 juin 2024, par Loïc

    I have a bin and a cue file (CD image) and I am making a website to be able to listen to my music. I managed to split the tracks and make a (44 bytes) wav header so my browser can read the audio but the wav files are too big to be read on an unstable connection (it's 1411kbps where an mp3 would be 320kbps or lower !).

    


    At first, is there a way to convert the audio to mp3 without making a temporary file in php ? Maybe ffmpeg or sox could help ?

    


    Secondly, I would like to be able to satisfy partial content requests (so I can skip without loading the whole file). I have already succeeded it for the wav files and I would need to know a few things to do it with mp3 :

    


      

    • How to make a mp3 header ?

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    • How to determine the file length ?

      • 


    • How to convert pcm_s16le audio to mp3 without headers at a constant bit rate ?

      • 


    


    I tried searching online but I did not find what I was hoping for. I hope you can help me.

    


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