Video tests with Raspberry Pi

Tests to check quality and feasibility to use a Raspberry Pi to track objects in movement.
In order to create an object follower, is important to see if the quality of the video is good enough.

Settings

Hardware

• Raspberry Pi 3
• 5 Mpx camera 

Software

• Raspbian Stretch lite - updated to April 2019
• raspivid

Preparation

After configuring the hardware, prepare the SD card with Raspbian stretch, then :

• login
• run Raspberry configuration tool : sudo raspi-config
• enable camera
• enable SSH
• expand all SD card for image
• logout
• login
• update/upgrade
• sudo apt-get update
• sudo apt-get upgrade
• logout

Tests

The first test is to capture a small video, 10-20 seconds, then copy the video file on a normal computer in roder to be seen.
In order to have some movement, the Raspberry is hooked over an old wire remote controlled toy :

To capture the video is used the program raspivid

To create the video I did start the raspivid program and then moved the robot.
Here an example :

Streaming 

Here how to do a streaming from the Raspberry toward an Android phone.

Raspberry

From the Raspberry side :

• install VLC
  (sudo apt-get install vlc)
• run this command :
  raspivid -o - -t 99999 -w 640 -h 360 -fps 25|cvlc stream:///dev/stdin --sout '#standard{access=http,mux=ts,dst=:8090}' :demux=h264

PC Side

From the PC side is possible to use VLC or a browser.

From VLC, just go to Media then Open Netwrok Stream and use the URL : http://<raspberry PI IP>:8090