search

motioneye-project / motioneye

A web frontend for the motion daemon.
GNU General Public License v3.0
3.99k stars 655 forks source link

wget of still images not working the first time #3054

Open mrneutron42 opened 1 month ago

mrneutron42 commented 1 month ago

For the last 3 years, I've been running MotioneyeOS (from June 6, 2020) in a Raspberry Pi Zero W with a RPi camera module attached via the CSI camera connector. motionEye Version 0.42.1 Motion Version 4.2.2+gitUNKNOWN OS Version motionEyeOS 20200606 I've been using a simple bash script run by a CRON job entry to capture images, for my weewx weather station page.  This is the line in the script that does the capture: wget http://192.168.7.90/picture/1/current/ -O /home/weewx/public_html/images/webcam.jpg It only calls for an image 1 time. Doing this has worked great, once per minute, for 3 years. (Note, that with MotioneyeOS you don't need the port :8765 notation in your wget call.)

This week, I loaded some other Raspberry Pi Zero boards (with attached RPi camera modules) loaded with 32-bit Bullseye RaspianOS from July 2024.  motionEye Version 0.43.1b2 Motion Version 4.7.0 OS Version Raspbian 11 I got Motioneye working in Bullseye and thought I had working Raspberry Pi cameras that were working as well as my 2020 vintage MotioneyeOS RaspberryPi cameras.  Nope! I found that the same wget command line I was using with the MotioneyeOS RPi cameras, does NOT work the same with the current Motioneye release running inside Bullseye RaspbianOS.
I found that the wget command doesn't grab a valid image from Motioneye, UNLESS you call wget, wait 2 seconds, and then call wget AGAIN! It's like Motioneye puts the camera to sleep and it takes 2 wget calls to wake it up and get a valid image?? By experimenting, I found that calling wget 2 times with a 2 second delay between calls, wakes up the camera and obtains a valid image. If I don't do this, I get a 0 byte .jpg file.

wget http://192.168.7.91:8765/picture/1/current/ -O /dev/null
sleep 2
wget http://192.168.7.91:8765/picture/1/current/ -O /home/weewx/public_html/images/webcam.jpg

Why is it now necessary to call wget 2 times to get a valid image from the camera with the latest release of Motioneye? Is the current Motioneye putting the camera module to sleep and thus it is necessary to issue 2 wget calls to wake it up? If so, is there a setting that will keep Motioneye from putting the camera to sleep?

Help appreciated,

mrneutron42 commented 1 month ago

The thing I'm seeing from watching the Motioneye GUI in a web browser, is that the camera image appears to time out and go off after about 1 minute, if you don't click on it with your mouse pointer, to "keep it awake". I think that is the issue that is requiring the wget command to be issued 2 times, to get an image. The first wget wakes up the camera. The second wget acquires a valid .jpg. Motioeye - camera asleep