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Autres articles (41)
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Diogene : création de masques spécifiques de formulaires d’édition de contenus
26 octobre 2010, parDiogene est un des plugins ? SPIP activé par défaut (extension) lors de l’initialisation de MediaSPIP.
A quoi sert ce plugin
Création de masques de formulaires
Le plugin Diogène permet de créer des masques de formulaires spécifiques par secteur sur les trois objets spécifiques SPIP que sont : les articles ; les rubriques ; les sites
Il permet ainsi de définir en fonction d’un secteur particulier, un masque de formulaire par objet, ajoutant ou enlevant ainsi des champs afin de rendre le formulaire (...) -
Publier sur MédiaSpip
13 juin 2013Puis-je poster des contenus à partir d’une tablette Ipad ?
Oui, si votre Médiaspip installé est à la version 0.2 ou supérieure. Contacter au besoin l’administrateur de votre MédiaSpip pour le savoir -
Encoding and processing into web-friendly formats
13 avril 2011, parMediaSPIP 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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7 Reasons to Migrate from Google Analytics to Matomo Now
15 mai 2022, par Erin -
Using ffmpeg to create a video from a sequence of TGA images, with a depth of field blur effect sourced from the TGA's alpha channel
19 mars 2016, par vpvpI’m working on turning a sequence of TGA images into a video using ffmpeg. I want the video to have a depth of field blur effect. The alpha channel of each TGA contains a depth-mask, where black=close and white=far. I want to use this info to add DOF blur to the final output of that frame. After searching, the closest answer I could find was this
http://superuser.com/questions/916431/ffmpeg-filter-to-boxblur-and-greyscale-a-video-using-alpha-mask, but it is for a static dof-mask. The DOF mask I would be using is obviously changing every frame, and an alpha channel instead of a seperate png.Here is my current cmd line
ffmpeg -framerate 60 -i image.%10d.tga -c:v libx264 -preset slow -crf 0 -c:a copy -pix_fmt yuv420p output0.mp4
It seems the answer would involve some use of alphamerge/alphaextract/boxblur, but I’m brand new to ffmpeg so I don’t know how to formulate the command.
Thanks in advance.
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Reading images from AXIS ip camera using OpenCV
14 juin 2016, par batumanI am trying to access AXIS IP camera from my program using OpenCV.
My OpenCV version is 3.1. I follow this tutorial link.I have all libraries installed.
My following program can load mp4 video successfully. That means ffmpeg and necessary libraries are working fine.#include <iostream>
#include <opencv2></opencv2>opencv.hpp>
using namespace std;
int main() {
cv::VideoCapture vcap("test.mp4");
cv::Mat image;
// const string address = "rtsp://root:pass@192.168.0.90/axis-media/media.amp?camera=1";
// if(!vcap.open(address)){
// std::cout << "Error opening video stream or file " << std::endl;
// return -1;
// }
for(;;){
if(!vcap.read(image)){
std::cout << "No frame" << std::endl;
cv::waitKey(0);
}
cv::imshow("Display", image);
cv::waitKey(1);
}
return 0;
}
</iostream>When I tried to access the IP Camera as follow
cv::VideoCapture vcap("rtsp://root:pass@192.168.0.90/axis-media/media.amp?camera=1");
I have the following error
GStreamer Plugin: Embedded video playback halted; module source reported: Could
not open resource for reading and writing.
OpenCV Error: Unspecified error (GStreamer: unable to start pipeline
) in cvCaptureFromCAM_GStreamer, file /home/Softwares/opencv/opencv/modules
/videoio/src/cap_gstreamer.cpp, line 818
terminate called after throwing an instance of 'cv::Exception'
what(): /home/Softwares/opencv/opencv/modules/videoio/src/cap_gstreamer.
cpp:818: error: (-2) GStreamer: unable to start pipeline
in function cvCaptureFromCAM_GStreamerUser is root and password is pass and ip 192.168.0.90 are all defaults.
My if config gave me
ifconfig
eth0 Link encap:Ethernet HWaddr b8:2a:72:c6:b8:13
inet6 addr: fe80::ba2a:72ff:fec6:b813/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:723959 errors:0 dropped:0 overruns:0 frame:0
TX packets:116637 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:199422245 (199.4 MB) TX bytes:13701699 (13.7 MB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:24829 errors:0 dropped:0 overruns:0 frame:0
TX packets:24829 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:2502903 (2.5 MB) TX bytes:2502903 (2.5 MB)
wlan0 Link encap:Ethernet HWaddr a0:a8:cd:99:92:60
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)What could be the problem for this access to the camera ?
Thanks