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Autres articles (16)

  • La file d’attente de SPIPmotion

    28 novembre 2010, par

    Une file d’attente stockée dans la base de donnée
    Lors de son installation, SPIPmotion crée une nouvelle table dans la base de donnée intitulée spip_spipmotion_attentes.
    Cette nouvelle table est constituée des champs suivants : id_spipmotion_attente, l’identifiant numérique unique de la tâche à traiter ; id_document, l’identifiant numérique du document original à encoder ; id_objet l’identifiant unique de l’objet auquel le document encodé devra être attaché automatiquement ; objet, le type d’objet auquel (...)

  • Contribute to documentation

    13 avril 2011

    Documentation is vital to the development of improved technical capabilities.
    MediaSPIP welcomes documentation by users as well as developers - including : critique of existing features and functions articles contributed by developers, administrators, content producers and editors screenshots to illustrate the above translations of existing documentation into other languages
    To contribute, register to the project users’ mailing (...)

  • Selection of projects using MediaSPIP

    2 mai 2011, par

    The examples below are representative elements of MediaSPIP specific uses for specific projects.
    MediaSPIP farm @ Infini
    The non profit organizationInfini develops hospitality activities, internet access point, training, realizing innovative projects in the field of information and communication technologies and Communication, and hosting of websites. It plays a unique and prominent role in the Brest (France) area, at the national level, among the half-dozen such association. Its members (...)

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  • Ubuntu ffmepg watermark position

    8 juillet 2015, par Arnas Pečelis

    so I have command :

    ffmpeg -i prepared/video.mp4 -i units/video_watermark.png -filter_complex overlay=main_w-overlay_w-10:main_h-overlay_h-10 -codec:a copy moved/video_test.mp4

    which should describe watermark position on bottom right but the watermark appears on the bottom center. what i’m doing wrong ?

    also I tried this command :

    ffmpeg -i prepared/video.mp4 -vf "movie=units/video_watermark.png [watermark]; [in][watermark] overlay=main_w-overlay_w-10:main_h-overlay_h-10 [out]" moved/output.mp4

    but with it watermark was not added, video was corrupted becouse of response :

    [aac @ 0x3556540] The encoder ’aac’ is experimental but experimental codecs are not enabled, add ’-strict -2’ if you want to use it.

    where is the clue ?

  • Closed Captioned TS to Open Captioned MP4 (w/Accurate Positioning)

    19 décembre 2019, par Cody Greene

    I am attempting to convert closed captioned MPEG TS files to open captioned MP4s using ffmpeg.

    I am having trouble retaining the positioning of the captions.

    The closest I’ve gotten is with this simple script :

    ffmpeg -f lavfi -i movie=input.ts[out+subcc] -map 0:1 output.ass
    
ffmpeg -i input.ts -vf "subtitles=output.ass" -c:v libx264 -pix_fmt yuv420p -b:v 8000k -c:a aac -b:a 192k target.mp4

    The result of this is the open captions are shifted FAR left and the bounding box draws black over the empty spaces left of wherever text is centered (ssa adds "/h", easily removed with sed, but then it’s left-aligned captions only)

    However, the vertical position, overall size, etc. all look great.

    Most subtitle formats force everything to the bottom center, but I’m trying to mimic the look of an open caption on the mp4 output.

    I’ve tried several formats with ccextractor and ffmpeg, but no luck. Any ideas what I’m doing wrong ?

  • Add text to video using FFMPEG

    29 décembre 2023, par Dexter

    I have a mp4 vertical video and I would like to add a text in center top of it. I read several things and found out 2 ways to do it (with and without font file).

    


    ffmpeg -i .mp4 -vf "drawtext=text=’Stack Overflow’:fontcolor=white:x=100:y=100:font=Arial" -codec:a copy .mp4

ffmpeg -i .mp4 -vf "drawtext=fontfile='.ttf':text='Stack Overflow':fontcolor=white:fontsize=24:box=1:boxcolor=black@0.5:boxborderw=5:x=(w-text_w)/2:y=(h-text_h)/2" -codec:a copy .mp4


    


    They both work for other people but when I'm trying to do it so I do have an error.

    


    Fontconfig error: Cannot load default config file: No such file: (null)


    


    And that is even if with the without font file method.

    


    Do someone have a solution for this error ?

    


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