Webcam with the Linux UVC driver

Prerequisites

  1. follow usb.video
Name Depends Size Description
mjpg-streamer libpthread, libjpeg 33738 Streaming application for Linux-UVC compatible webcams

The package motion is not available in the OpenWrt repositories. http://www.lavrsen.dk/foswiki/bin/view/Motion/WebHome

Installation

opkg install kmod-video-uvc mjpg-streamer

Configuration

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.

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" &

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.

The package uvc-streamer is no longer in the OpenWrt repositories.

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doc/howto/webcam.txt · Last modified: 2014/07/29 00:39 by rogerd