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  • Ajouter des informations spécifiques aux utilisateurs et autres modifications de comportement liées aux auteurs

    12 avril 2011, par

    La manière la plus simple d’ajouter des informations aux auteurs est d’installer le plugin Inscription3. Il permet également de modifier certains comportements liés aux utilisateurs (référez-vous à sa documentation pour plus d’informations).
    Il est également possible d’ajouter des champs aux auteurs en installant les plugins champs extras 2 et Interface pour champs extras.

  • 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.

  • 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 (...)

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  • FFMPEG Wipe transition one layer over another

    25 juillet 2021, par Dan Weaver

    How to reveal one layer over another with a wipe transition using FFMPEG ?

    


    enter image description here

    


    NOTE : this is not a slide transition. The top image stays in one position but is gradually revealed over time.

    


    I'd like a technique that can work for top layers with or without transparency and for images, videos or dynamically created sources, like showwavespic.

    


    I tried making a mask animation like so :

    


    enter image description here

    


    but alphamerge doesn't work as I expected it to and I can't find a blend mode that works with this type of mask.

    


    EDIT : The xfade filter was suggested but it doesn't seem to work with when source has transparency. It renders transparent areas black. Example with transparent source :

    


    enter image description here

    


    But xfade renders this :

    


    enter image description here

    


  • How concat files URL of S3 using Lambda, Ffmpeg

    4 juillet 2021, par Tính Ngô Quang

    I am trying to concat webm files into 1 file, Then upload file new video to S3
Using S3, ffmpeg/lambda-layer

    


    import subprocess
import shlex
import boto3

def lambda_handler(event, context):
    ffmpeg_cmd = "ffmpeg -safe 0 -f matroska concat"
    ffmpeg_cmd += " -i https://s3demo.s3.ap-northeast-1.amazonaws.com/archives/input/record/mask/ep_1.webm"
    ffmpeg_cmd += " -i https://s3demo.s3.ap-northeast-1.amazonaws.com/archives/input/record/mask/ep_2.webm"
    ffmpeg_cmd += " -c:v copy -af aresample=async=1:first_pts=0 -"

    command1 = shlex.split(ffmpeg_cmd)
    p1 = subprocess.run(command1, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
    print(p1.stdout)
    print(p1.stderr)
    # resp = s3_client.put_object(Body=p1.stdout, Bucket=s3_source_bucket, Key=s3_destination_filename2)


    


    I get error message :

    


    


    concat : Read-only file system

    


    


    According to the article below, using directory storage but still the same error.
https://stackoverflow.com/a/47323443/2949104

    


    ffmpeg_cmd += " -vcodec copy -acodec copy /tmp/output.webm -y"


    


  • Whats is the problem of my old .MOV file ?

    3 septembre 2021, par PierDEVIT

    What is the meaning of the problem ? I want to test the integrity of my old .mov file :

    


    [dvvideo @ 0x7ffd8d819a00] Concealing bitstream errors
    Last message repeated 52 times


    


    The file captured it from a MiniDV in the 2008 year

    


    How can I fix this problem ? Thanks for the advice

    


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