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Médias (91)

Autres articles (26)

  • 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 (...)

  • Emballe médias : à quoi cela sert ?

    4 février 2011, par

    Ce plugin vise à gérer des sites de mise en ligne de documents de tous types.
    Il crée des "médias", à savoir : un "média" est un article au sens SPIP créé automatiquement lors du téléversement d’un document qu’il soit audio, vidéo, image ou textuel ; un seul document ne peut être lié à un article dit "média" ;

  • La sauvegarde automatique de canaux SPIP

    1er avril 2010, par

    Dans le cadre de la mise en place d’une plateforme ouverte, il est important pour les hébergeurs de pouvoir disposer de sauvegardes assez régulières pour parer à tout problème éventuel.
    Pour réaliser cette tâche on se base sur deux plugins SPIP : Saveauto qui permet une sauvegarde régulière de la base de donnée sous la forme d’un dump mysql (utilisable dans phpmyadmin) mes_fichiers_2 qui permet de réaliser une archive au format zip des données importantes du site (les documents, les éléments (...)

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  • (no accepted answer) How to merge 2 overlapping videos into one video using ffmpeg or opencv ?

    3 janvier 2021, par Muhammad Umer

    Merging two videos is easy, been answered couple of times. What I have is multiple overlapping videos. A video might have overlaps with video before it. Meaning if video 1 covers 1-5 timeline then video 2 may overlap 1, and cover 3 to 8. Merging them as is would result in 1-5|3-8, when i need 1-8 only.

    



    Videos are alphabetically sorted.

    



    My general idea of solution is...

    



      

    • grab last frame of the video

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    • if it's first video continue

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    • if it's not first video, ie. 2nd, search for frame saved in previous steps frame by frame

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    • if it reaches to last frame of current video then there is no overlap continue

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    • if it founds a frame then clip 2nd video up to that frame inclusive and then go to next frame

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    • once all videos have been analyzed, merge them into one video.

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    I need to translate this to ffmpeg commands. Or opencv if that's a better tool.

    



    If there is better way of doing that, I'm interested in that too.

    


  • Requirements for using ffmpeg to create mpeg4 files in SaaS solution

    25 août 2016, par Paul Fleming

    My requirement is :
    - On upload of a supported video file, convert the file to common formats to maximize web compatibility.

    Essentially, I want to take a non-web-supported video file, and converted it to WEBM and MPEG4. This will take place on a Windows Server VM inside Microsoft Azure.

    ffmpeg seems to be the de facto standard for video conversion yet it introduces licensing hell, not only with GPL/LGPL but by not offering a commercial license, meaning I now have to worry about paying royalties to MPEG-LA.

    Can anyone advise on MPEG-LAs licensing model as it applies to SaaS ? I will not be distributing ffmpeg (runs server side) and the conversion takes place on Windows (Server) OS.

  • Comparison of two ffmpeg commands for video segment

    14 juillet 2021, par Anas Ansari

    I have two commands for making video segments in android ffmpeg

    


      

    • -ss startTime -i inputVideo -f segment -segment_time segmentDuration -reset_timestamps 1 -vcodec copy -b:v2 097152 -b:a 48000 -ac 2 -ar 22050 outputPath

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    • -ss startTime -i inputVideo -f segment -segment_time segmentDuration -reset_timestamps 1 outputPath

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    I have tried them both and noticed that first command is very very fast than second

    


    Since I am new to ffmpeg , i really don't know them meaning of every argument in these commands

    


    Can anyone plz explain me why first command is better and will it cause any errors in future

    


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