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Autres articles (45)

  • MediaSPIP 0.1 Beta version

    25 avril 2011, par

    MediaSPIP 0.1 beta is the first version of MediaSPIP proclaimed as "usable".
    The zip file provided here only contains the sources of MediaSPIP in its standalone version.
    To get a working installation, you must manually install all-software dependencies on the server.
    If you want to use this archive for an installation in "farm mode", you will also need to proceed to other manual (...)

  • Les formats acceptés

    28 janvier 2010, par

    Les commandes suivantes permettent d’avoir des informations sur les formats et codecs gérés par l’installation local de ffmpeg :
    ffmpeg -codecs ffmpeg -formats
    Les format videos acceptés en entrée
    Cette liste est non exhaustive, elle met en exergue les principaux formats utilisés : h264 : H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 m4v : raw MPEG-4 video format flv : Flash Video (FLV) / Sorenson Spark / Sorenson H.263 Theora wmv :
    Les formats vidéos de sortie possibles
    Dans un premier temps on (...)

  • Keeping control of your media in your hands

    13 avril 2011, par

    The vocabulary used on this site and around MediaSPIP in general, aims to avoid reference to Web 2.0 and the companies that profit from media-sharing.
    While using MediaSPIP, you are invited to avoid using words like "Brand", "Cloud" and "Market".
    MediaSPIP is designed to facilitate the sharing of creative media online, while allowing authors to retain complete control of their work.
    MediaSPIP aims to be accessible to as many people as possible and development is based on expanding the (...)

Sur d’autres sites (5587)

  • Read part of every frame of a video file

    18 novembre 2012, par user1414470

    I'm doing some tracking on video files. First I separate frames using ffmpeg and the for each frame i apply a mask and then perform the tracking algorithm.

    To make this process faster I'm thinking about reading only the parts I need. like reading the part that I apply the mask or better than that reading boxes around the previous positions of objects. So I'm looking for a way to decode and read a specific part of a specific frame from a video file. Is there any way to do that ?

  • Content retreived from glacier vault , how to feed into ffmpeg or ffprobe ?

    22 septembre 2021, par maddy23

    Wrote a python program to retreive the whole archive file from the glacier vault , from get_job_output.py

    


    Further from the respobe body from get_job_output.py , loaded into a varible.

    


    responese = vaultName='vualt_name',
    jobId='UBSW2BjtzM8i868SD97sVS972-Ifz2tVOOW2BjtzM8ifceipTvN-2RgDJG5JjWgIw1BZ9Bv_v9NJTg7OadEupjTFO',
)

content = respone['body'] --> which is an streamingbody 


    


    further i need to feed the streambody cotent into ffmpeg cmd

    


    ffprobe -i "content"


    


    Above cmd returns :
TypeError : can only concatenate str (not "StreamingBody") to str

    


    I dont want to use StreamingBody.read(response['body']) , which basically loads the whole file into RAM.
what are other ways to handle the streamingbody from respone and feed to other programs.
or is there a way to generate a http://link for the

    


  • ffmpeg performence when encode mpeg2

    25 août 2015, par Gang Chen

    when i encode a 1080p mpeg2 format video with avcodec_encode_video2, the avcodec_encode_video2 will cost 100ms per frame.

    how can i decrease the encode time ?

    encode paramter as below :

    bit_rate 20000000
    
width 1920
    
heigth 1080
    
time_base  (AVRational){1, 30}
    
gop_size = 15;
    
max_b_frames = 2;
    
trellis = 2;
    
me_cmp = 2;
    
me_sub_cmp = 2;
    
pix_fmt = AV_PIX_FMT_YUV420P;

    =====================================
    This question body does not meet our quality standards. Please make sure that it completely describes your problem - including what you have already tried - and is written using proper grammar.This question body does not meet our quality standards. Please make sure that it completely describes your problem - including what you have already tried - and is written using proper grammar.This question body does not meet our quality standards. Please make sure that it completely describes your problem - including what you have already tried - and is written using proper grammar.This question body does not meet our quality standards. Please make sure that it completely describes your problem - including what you have already tried - and is written using proper grammar.

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