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  • 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 (...)

  • 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.

Sur d’autres sites (6637)

  • ffmpeg :How to make Text_1 ( bold ) and Text_2 ( Normal ) ?

    15 décembre 2016, par Bheem Swami
    ffmpeg -i raw_video.mp4 -i photo1.png -i photo2.png -filter_complex "[0:v]drawtext=fontfile=aller_Bd.ttf:text='Text_1':fontcolor=black@1.0:fontsize=18:x=20:y=259,drawtext=fontfile=aller_Rg.ttf:text='Text_2':fontcolor=black@1.0:fontsize=16:x=67:y=259[text];[text][1:v]overlay=215:0 [tmp]; [tmp] overlay=372:216" -codec:v libx264 -codec:a copy -y output_video.mp4

    Add 2 text : Text_1 and Text_2

    1. How to make Text_1 ( bold ) and Text_2 ( Normal )
    2. Text_1 is dynamic (not fix length) . How to start Text_2 after Text_1

  • ffmpeg - when scaling, how to keep shapes of people's heads

    19 janvier 2017, par Dave

    Ok, I’m quite familiar with FFMPEG utility in general, and have used it for
    years to cut short snippets from videos, etc. But it’s only in the last
    month that and I decided to learn to use it to transcode with video-filters
    etc. (Before that, I was using other tools such as ’Handbrake’ and ’FreeMake’
    and VLC, etc.)

    For my ffmpeg transcodes, my target output resolution will always be constant, from one transcode run to the next. But the resolution and display aspect-ratio of the input file, from one transcode run to the next, will vary...could be almost any values.
    The input files will never already have black-bars when displayed.

    So, the relevant portion [ i.e. the video-filter(s) part) of my cmd line ] presently is as follows :

    ffmpeg ... -vf "scale=720:406,setsar=1,pad=720:506:0:40:Black" ...

    Also note : I do NOT use the "-aspect" option in the cmd-line. (Maybe I’ll
    need to (???) to solve my issue, but I’m unsure about how that interacts
    with scaling.)

    ( EDIT : Oh, I happen to have chosen that resolution value of 720x406, for
    the image-area (i.e. inside the top/bottom black bars) because it
    has an aspect ratio of 16:9 (Of course, 16:9 ratio is common these days. )

    My cmd always executes cleanly and produces an output file (a WebM, tho I doubt
    that container types and/or vcodec choices matter at all to scaling algorithm issues).

    So the issue/problem that I’m trying to solve is how to prevent any stretching
    in either direction. In other words, a round soccer ball in the input file
    must yield a round ball in the output file ! (NOT oval-shaped in either axis).

    ( Edit #2 : Oh, I forgot to mention that I’m not have the same amount of stretching from one ffmpeg output file to the next. Sometimes there is
    no stretch in my output file, and with some other input file, the
    people are too tall in the output, and some other output file will have
    people are too wide. I’m assuming
    there is some single cmd that will always work for each randomly sized
    input file, WITHOUT having to resort to examining meta-data of each
    input and then having to adjust portions of the needed ffmpeg cmd.
    I assume this because I have used a tool called "FreeMake" that needs
    no such adjustment. When you do a ’scale’ with that program, it asks
    you to choose one of four adjustment-algorithms labeled "original"
    "stretched", "zoom..." and "auto". If I recall correctly, it was the
    "auto" choice that prevented any stretching.)

    The goal of that last filter (i.e. the "pad=720:506:0:40:Black" phrase) is to
    add a black bar of 40 pixels to the top and 60 pixels to the bottom.
    (That filter IS producing the black-bands, as desired. I mention it,
    because I’m unsure whether it could be having any effect on the altered
    shape of the ’round soccer ball’). If the "pad" filter IS part of the
    issue, then maybe I’ll need to make multiple ffmpeg cmds to achieve
    my overall goal (!?!?). [I’d LIKE to be able to do everything in just
    one ffmpeg cmd, as shown.]

    OK ?

    So are there any image-processing and ffmpeg gurus out there that
    know how to fix my problem ?

    TIA...

    Dave

  • How can I cut out detected freezed (used "freezedetect") parts from a video file using ffmpeg ?

    24 mars 2020, par Itzhak Eretz Kdosha

    I am trying to process a recorded stream that has a lot of freezes.
    I am able to detect the freeze sections using "freezedetect" but I dont know how to pipe the result and cut them out of the video.
    (no experience in video processing at all)

    Would appreciate any help, thanks.

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