Show pagesourceOld revisionsBacklinksBack to top × Table of Contents Webcam with the Linux UVC driver Prerequisites Installation Configuration Usage Performance Embedding video stream into simple webpages Controlling exposure, color balance, etc. Webcam Pan and Tilt Example with Microprocessor Troubleshooting Link Dump Webcam with the Linux UVC driver See USB Video Support USB video device class Prerequisites follow usb-installing follow usb.video Name Depends Size Description mjpg-streamer libpthread, libjpeg 33738 Streaming application for Linux-UVC compatible webcams The package motion is not now available in the OpenWrt repositories. http://www.lavrsen.dk/foswiki/bin/view/Motion/WebHome Installation opkg install kmod-video-uvc mjpg-streamer Configuration →/etc/config/mjpg-streamer Don't forget change option enabled '0' to '1'. Usage start on boot/etc/init.d/mjpg-streamer enable start mjpg-streamer right now/etc/init.d/mjpg-streamer start NOTE: You will need to edit the mjpeg config to enable the mjpeg streamer. Manually edit the /etc/config/mjpeg-streamer file. Now open the URL http://192.168.1.1:8080/ in the Firefox browser or VLC and watch the MJPEG stream (the default username/password is “openwrt”/“openwrt”). In other browsers, scripts, etc., you can use http://192.168.1.1:8080?action=snapshot for taking one image or http://192.168.1.1:8080?action=stream for stream of images. Performance mjpeg-streamer fps, CPU load, memory usage, bandwidth at different resolutions: USB HD camera module (vid=05a3, pid=9230) Logitech HD Pro C920 (vid=046d, pid=082d) Embedding video stream into simple webpages Download a package located here and unpack it into /www/webcam_www directory. Edit /etc/init.d/mjpg-streamer - find this line in function start(): [ $enabled -gt 0 -a -c $device ] && sleep 3 && $SSD -S -m -p $PIDF -q -x $PROG -- --input "input_uvc.so --device $device --fps $fps --resolution $resolution" --output "output_http.so --port $port" & and add -w /www/webcam_www behind --output “output_http.so. Now it should look like this: [ $enabled -gt 0 -a -c $device ] && sleep 3 && $SSD -S -m -p $PIDF -q -x $PROG -- --input "input_uvc.so --device $device --fps $fps --resolution $resolution" --output "output_http.so -w /www/webcam_www --port $port" & Now restart mjpg-streamer and open the URL http://192.168.1.1:8080/ in your web browser. Controlling exposure, color balance, etc. The opkg version of mjpg-streamer has no control options for the camera. If you want to control exposure, brightness and other options you'll need to install uvcdynctrl. Install uvcdynctrl opkg install uvcdynctrl List available devices. /usr/bin/uvcdynctrl -l List available control options. /usr/bin/uvcdynctrl -c Listing available controls for device video0: Brightness Contrast Saturation Hue White Balance Temperature, Auto Gamma Power Line Frequency White Balance Temperature Sharpness Backlight Compensation Create a configuration file based on the current running values. /usr/bin/uvcdynctrl -W /etc/config/uvcdynctrl Load a configuration file, which can be edited. /usr/bin/uvcdynctrl -L /etc/config/uvcdynctrl The above can be added to /etc/rc.local, via the GUI or command line to load settings required for your camera. I use the above to enable auto exposure and auto white balance which would otherwise be disabled from cold a start. Webcam Pan and Tilt Example with Microprocessor Here is a writeup of using openWrt for a pan and tilt camera. The devices were NSLU2 for openWrt and Picaxe for microcontroller, but the idea is the same with arduino as micro and other openWrt devices: http://www.picaxeforum.co.uk/showthread.php?13705 Grey day today here in Nova Scotia, you can see at http://www.lyzby.com/cam.html Troubleshooting If the control page doesn't contain any of the controls, edit the file /etc/init.d/mjpg-streamer and replace these lines service_start /usr/bin/mjpg_streamer --input "input_uvc.so \ --device $device --fps $fps --resolution $resolution" \ --output "output_http.so --www $www --port $port" by (on a single line ) service_start /usr/bin/mjpg_streamer --input "input_uvc.so --device $device --fps $fps --resolution $resolution" --output "output_http.so --www $www --port $port" The command mjpg_streamer -h give you usage information and examples. If your webcam is an uvc supported by V4L but you cannot get an image (white page), you may check that webcam output is not YUV only like output below: root@OpenWrt:~# v4l2-ctl -V Format Video Capture: Width/Height : 320/240 Pixel Format : 'YUYV' Field : None Bytes per Line: 640 Size Image : 153600 Colorspace : SRGB The package uvc-streamer is no longer in the OpenWrt repositories. https://dev.openwrt.org/browser/packages/multimedia/uvc-streamer/files/uvc-streamer.init?rev=10127 https://dev.openwrt.org/changeset/17003/packages/multimedia/uvc-streamer/files/uvc-streamer.init Link Dump http://wiki.leipzig.freifunk.net/Diskussion:Backfire#quickcam_pro_5000 This website uses cookies. By using the website, you agree with storing cookies on your computer. Also you acknowledge that you have read and understand our Privacy Policy. If you do not agree leave the website.OKMore information about cookies Last modified: 2019/08/26 12:45by vgaetera