Software Installations: April 2015

Sunday, April 12, 2015

Raspbian v2015-02-16
Motion
MMAL Motion

Status:

Notes:

Pi camera works at 10~14fps.
Webcam works at 30?fps.
Using 50% for jpeg quality and size: 256x144px (Pi Camera).
With this configuration, CPU use is about 33%~96% for motion with webcam, and about 19%~53% for mmal-motion and Pi Camera.
It only works with firefox (Windows and Android? version).

Installing Motion for Webcam:

Testing Motion for Webcam:

Installing MMAL Motion for Pi Camera:

Install Motion, dependencies and MMAL Motion:
sudo apt-get install motion libjpeg62
cd ~/
mkdir mmal
cd mmal
wget https://www.dropbox.com/s/jw5r1wss32tdibb/motion-mmal-opt.tar.gz
tar -zxvf motion-mmal-opt.tar.gz
cd ./motion-mmal
Configure Motion:
nano motion-mmalcam.conf
Changing config file:
daemon on
gap 10
mmalcam_secondary_buffer_upscale 2
stream_secondary off (ON to use with mmalcam_secondary_buffer_upscale)
output_secondary_pictures off (ON to use with mmalcam_secondary_buffer_upscale)
ffmpeg_output_secondary_movies off (ON to use with mmalcam_secondary_buffer_upscale)
Start MMAL Motion:
cd ~/mmal/motion-mmal/
./motion-mmal -n -c motion-mmalcam.conf

Testing MMAL Motion for Pi Camera:

References:

Other options for Streaming:

Sunday, April 5, 2015

Raspbian v2015-02-16
MJPG-Streamer v182
Raspistill

Status:

Notes:

Since pi camera is 5Mpx and HD, we're using 854x480 resolution.
Pi camera works at 1~2fps.
Using "Sport" exposure option to reduce distortion generated by the moviment.
Using 50% for jpeg quality (file size = +- 200kb. If use 10% then +-23Kb, else if 34% then +-150kb, else if 75% then +-240kb, else if 1280x720x50% than +-510kb).
With this configuration, CPU use is about 2%~3% for raspistill and +-2% for mjpg-streamer.
Using 640x360x50% results in 100kb file size.
It works with firefox and chrome (Windows and Android versions).

ToDo:

Installing:

Enabling Pi Camera:
sudo raspi-config
Select Enable camera and hit Enter, then go to Finish and you'll be prompted to reboot.
Install build dependencies:
sudo apt-get install libjpeg8-dev imagemagick libv4l-dev
Add missing videodev.h:
sudo ln -s /usr/include/linux/videodev2.h /usr/include/linux/videodev.h
Download MJPG-Streamer:
wget http://sourceforge.net/code-snapshots/svn/m/mj/mjpg-streamer/code/mjpg-streamer-code-182.zip
Unzip the MJPG-Streamer source code:
unzip mjpg-streamer-code-182.zip
Build MJPG-Streamer:
cd mjpg-streamer-code-182/mjpg-streamer
make mjpg_streamer input_file.so output_http.so
Install MJPG-Streamer:
sudo cp mjpg_streamer /usr/local/bin
sudo cp output_http.so input_file.so /usr/local/lib/
sudo cp -R www /usr/local/www
Start the camera and MJPG-Streamer:
mkdir /tmp/stream
raspistill --nopreview -w 640 -h 480 -q 5 -o /tmp/stream/pic.jpg -tl 100 -t 9999999 -th 0:0:0 & LD_LIBRARY_PATH=/usr/local/lib mjpg_streamer -i "input_file.so -f /tmp/stream -n pic.jpg" -o "output_http.so -w /usr/local/www"
Cleanup (removing source code files):
cd ../../
rm -rf mjpg-streamer-182

Testing:

References:

Other options for Streaming: