Webcam Bot !
Get flash to fully experience Pearltrees
La "capture" est le fait de prendre une vidéo d'une source et de la rendre numérique. Il existe plusieurs sorte de capture, la capture analogique est le nom que l'on donne à la capture d'un flux non numérique tel qu'un magnétoscope, la sortie vidéo d'une console de jeu, un vieux camescope VHS ou BetaVideo, etc … Il y a aussi la capture numérique, ou par "firewire", c'est en fait l'acquisition d'une vidéo enregistrée via un camescope de type DV le plus souvent. L'enregistrement sur un tel camescope est de type numérique, mais il a un très gros défaut, un ordinateur n'a pas de lecteur DV … Il faut donc utiliser le camescope comme lecteur DV pour qu'il nous livre la vidéo.
capture_video
Cet article explique comment simuler la présence d'une Webcam virtuelle sous Linux, et y diffuser le contenu d'une vidéo de votre choix. Pour y arriver, nous allons ici nous aider du logiciel WebcamStudio distribué sous la licence GPL . Cette technique est intéressante si l'on souhaite rester anonyme ou se faire passer pour quelqu'un d'autre, sur des sites comme Chatroulette ou avec certains logiciels de messagerie instantanée tels que MSN , Jabber, Skype...
Simuler une webcam virtuelle avec WebcamStudio
Après avoir installé webcamstudio, j'ai trouvé deux nouvelles webcam en version "driver 1.4-trunk" : même version que vloopback. La différence est que le vloopback que j'ai compilé moi-même ne fonctionne qu'avec webcamstudio, alors que celui compilé par webcamstudio me permet d'utiliser la ligne de commande par exemple : mkfifo output.yuv gst-launch souphttpsrc location= http://193.40.245.184/mjpg/video.mjpg ! decodebin !
WebcamStudio - webcamstudio et vloopback : source vidéo avi || flv
From OLPC This page explores how to interact with the laptop's built-in video camera. [ edit ] Getting started First, let's see the quickest way we can capture a still image from the camera--using a GStreamer command-line tool:
Programming the camera
This is a bit of a long post, but bear with me Last week, I found out that OpenSolaris has recently added the Video4Linux2 APIs, and now provides a v4l2 driver for UVC compatible video cameras. That’s slightly funny, of course, because it has the word ‘Linux’ right there in the name.
Fun things to do with GStreamer command-lines » Verbal Diaryer
playbin
Description Playbin provides a stand-alone everything-in-one abstraction for an audio and/or video player. Playbin can handle both audio and video files and features
From ElphelWiki AVLD is a video loopback device for GNU-Linux, written by Pierre Parent and licensed under GPL. With AVLD you can use Elphel cameras for image acquisition in v4l (version 1) compatible applications, video conferencing, etc Video is playing smoothly on a 2.4Ghz dual core notebook at 25fps in 1440x896, and CPU usage is 'only' 20-25% per core Accessing Elphel camera streams through a v4l device (eg: /dev/video0)
AVLD - Another Video Loopback Device - ElphelWiki
Software for the D-Link DCS-900 internet security webcam This is Unix / Linux OS software running on X windows, released under the GPL licence. Current version has motion dection and frame rate control (saves on disk space), can output mjpeg tools YUV, you can view in X or with mplayer, and encode to almost any known format with mencoder, ffmpeg, or transcode. Also you can add on screen text on objects in any color and any position, and dynamically change text. Download Full source in C: mcamip-0.7.8.tgz
Computer
Webcam "dummy" device can only be read by Mplayer. [avld / gscpa / OpenCV / Ubuntu]
Webcam "dummy" device can only be read by Mplayer. [avld / gscpa / OpenCV / Ubuntu] Hello there! This is my first post here. I'm playing a little bit with OpenCV but the webcam that i have on my desktop isn't app-friendly... so i could not get it working with OpenCV, it's a 0ac8:301b Z-Star Microelectronics Corp. ZC0301 WebCam and it worked out of the box with Cheese and after a little bit of tweak i get it working with camorama also.
v4l2loopback - Project Hosting on Google Code
this is v4l2 loopback device which output is it's own input. this is useful for feeding different v4l2 applications with video from non v4l2 sources, for example one can feed Skype with video enhanced by gstreamer effects; or use input device which does not have v4l2 compliant driver; or to share one v4l device with many programs, as many drovers are block device, when opened. code is based on avld driver, but in fact it is a complete rewrite and final version unlikely will share common code. work is ongoing, next stage is to remove hard-coded image resolution and make it possible to open device for reading more than one time.: vloopback
vloopback is a video4linux driver providing video pipes. With the driver you can use the output of a user program to feed a program that would normally communicate with a video4linux device. http://www.lavrsen.dk/twiki/bin/view/Motion/VideoFourLinuxLoopbackDevice http://bugs.gentoo.org/show_bug.cgi?id=111750VideoFourLinuxLoopbackDevice < Motion < Foswiki
Original author: JeroenVreeken Uploaded to TWiki first time by KennethLavrsen Introduction The video4linux device is a driver that implements a video pipe using two video4linux devices Jeroen Vreeken wrote this driver for debugging motion realtime, which worked very nice and he decided to make something usefull of it. You can use this driver for looking at motion in realtime or for feeding a webcam while still securing your room.Linux Video Hacks
"Video-encoding-junkie? Me? Let me think about it for 25 frames, ehh, one second" Transcode mailing list archiveAVLD is a V4L dummy video device built to simulate an input video device like a webcam or a video capture card. You just have to send the video stream on it (using, for instance, mplayer or ffmpeg), that's all. Then, you can use this device by watching the video on it with your favorite video player. But, one of the most useful interest, is obviously to use it with a VideoConferencing software or Adobe Flash application to show a video over internet.