Recherche avancée

Médias (91)

Autres articles (104)

  • Websites made ​​with MediaSPIP

    2 mai 2011, par

    This page lists some websites based on MediaSPIP.

  • 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" (...)

  • Gestion de la ferme

    2 mars 2010, par

    La ferme est gérée dans son ensemble par des "super admins".
    Certains réglages peuvent être fais afin de réguler les besoins des différents canaux.
    Dans un premier temps il utilise le plugin "Gestion de mutualisation"

Sur d’autres sites (10916)

  • Unable to connect to UDP through opencv [closed]

    16 février 2020, par Heyyaya

    Currently on my windows laptop, I have setup a project which uses OpenCV to get live feed (udp) off my drone using the cv2.VideoCapture("udp ://@") command. It works very well, yet when I try running my code on the pi, it doesn’t recognize the video capture and returns errors including, unable to resize null object. Is there something I need installed inorder to get this working ?

    Thanks

  • Opencv cv2.VideoCapture('file.avi') shows first frame then throws exception

    3 novembre 2014, par holografix

    I’m trying to read a .avi included in the OpenCV original package, it’s called 768x576.avi and shows a few people walking around a street.

    The code below shows what seems to be the 1st frame and runs for a few seconds before returning an Exception.

    import cv2
    
cap = cv2.VideoCapture('768x576.avi')
    
cap.isOpened() # returns True
    
cap.get(3); cap.get(4) # returns 768 and 576
    

    
while (True):
    
    ret, frame = cap.read()
    
    cv2.imshow('frame', frame)

    Hands me this error after a few secs on the cv2.imshow line, I think it means the returned frame had no data associated it in.

    error: /tmp/opencv-7y6HHt/opencv-2.4.9/modules/highgui/src/window.cpp:261: error: (-215) size.width>0 && size.height>0 in function imshow

    I have no idea why this is happening, I’m running Yosemite, brew installed Python, OpenCv and Ffmpeg.

    opencv: stable 2.4.9, HEAD
    
http://opencv.org/
    
/usr/local/Cellar/opencv/2.4.9 (219 files, 38M) *
    

    
ffmpeg: stable 2.4.2 (bottled), HEAD
    
https://ffmpeg.org/
    
/usr/local/Cellar/ffmpeg/2.4.2 (199 files, 40M) *
    
  Poured from bottle
    
From: https://github.com/Homebrew/homebrew/blob/master/Library/Formula/ffmpeg.rb
    
==> Dependencies
    
Build: pkg-config ✔, texi2html ✘, yasm ✘
    
Recommended: x264 ✔, faac ✔, lame ✔, xvid ✔

  • failed to set frame number in opencv in cpp

    28 février 2018, par Madhu Nadendla

    I am trying to set frame position of opened videofile using OpenCV in C++ but it returns 0.

    solution 1

    bool success = capture.set(CV_CAP_PROP_POS_FRAMES, noFrame);
    

    
double frameRate = capture.get(CV_CAP_PROP_FPS);

Navigation