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Mot : - Tags -/Christian Nold

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  • Creating farms of unique websites

    13 avril 2011, par

    MediaSPIP platforms can be installed as a farm, with a single "core" hosted on a dedicated server and used by multiple websites.
    This allows (among other things) : implementation costs to be shared between several different projects / individuals rapid deployment of multiple unique sites creation of groups of like-minded sites, making it possible to browse media in a more controlled and selective environment than the major "open" (...)

  • Les autorisations surchargées par les plugins

    27 avril 2010, par

    Mediaspip core
    autoriser_auteur_modifier() afin que les visiteurs soient capables de modifier leurs informations sur la page d’auteurs

  • Gestion des droits de création et d’édition des objets

    8 février 2011, par

    Par défaut, beaucoup de fonctionnalités sont limitées aux administrateurs mais restent configurables indépendamment pour modifier leur statut minimal d’utilisation notamment : la rédaction de contenus sur le site modifiables dans la gestion des templates de formulaires ; l’ajout de notes aux articles ; l’ajout de légendes et d’annotations sur les images ;

Sur d’autres sites (3854)

  • lavc/bitstream : templatize for BE/LE

    28 janvier 2021, par Anton Khirnov
    lavc/bitstream : templatize for BE/LE

    Allows using both BE and LE bitstream readers in the same file.
    • [DH] libavcodec/Makefile
    • [DH] libavcodec/bitstream.h
    • [DH] libavcodec/bitstream_template.h
    • [DH] tests/ref/fate/source

  • FFMPEG save last 10 sec before a movement and next 30secs

    2 novembre 2020, par Set1ish

    I have a surveillance camera that process frame by frame live video. In case of movement, I want to save a video containing the last 10 seconds before the movement and next 30 seconds after the movement.
I beleve (may be I'm wrong), that last 10 second + next 30seconds task, should be obtained without decoding-rencoding process.

    


    I try to use python with fmmpeg pipes, creating a reader and a writer, but the reader seams too slow for the stream and I loose some packets (= loose on video quality for saved file).

    


    Here my code

    


    import ffmpeg
import numpy as np

width = 1280
height = 720


process1 = (
    ffmpeg
    .input('rtsp://.....',rtsp_transport='udp', r='10', t="00:00:30")
    .output('pipe:', format='rawvideo', pix_fmt='yuv420p')
    .run_async(pipe_stdout=True)
)

process2 = (
    ffmpeg
    .input('pipe:', format='rawvideo', pix_fmt='yuv420p', s='{}x{}'.format(width, height))
    .output("prova-02-11-2020.avi", pix_fmt='yuv420p',r='10')
    .overwrite_output()
    .run_async(pipe_stdin=True)
)
while True:
    in_bytes = process1.stdout.read(width * height * 3)
    if not in_bytes:
        break
    in_frame = (
        np
        .frombuffer(in_bytes, np.uint8)
        )

    #In future I will save in_frame in a queue
    out_frame = in_frame
   
    process2.stdin.write(
        out_frame
        .astype(np.uint8)
        .tobytes()
    )

process2.stdin.close()
process1.wait()
process2.wait()


    


    If I run

    


    ffmpeg -i rtsp://... -acodec copy -vcodec copy -t "00:00:30" out.avi


    


    It look that decode-rencode process is done in quick/smart way without loosing any packet.
My dream is to make the same on python for the surveillance camera but intergrating with code that analyse the stream.

    


    I would like that the flow for creating the file, does not requires decoding + enconding. The last 10secs frames are in a queue and, at specific event, the contenet of queue plus next 30secs frames are saved into a avi file

    


    I have the constraints to have realtime motion detection on live streaming

    


    Did you have any comments or suggestion ?

    


  • doc/filters : move mcdeint above mergeplanes

    26 septembre 2015, par Paul B Mahol
    doc/filters : move mcdeint above mergeplanes

    Signed-off-by : Paul B Mahol <onemda@gmail.com>
    • [DH] doc/filters.texi

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