Video Streaming with Navio2¶
Streaming real-time video from a drone powered by a Raspberry Pi 2 has never been easier. There is only a handful of actions that you need to make to get a drone streaming real-time video to a remote PC, tablet, phone or whatnot.
This instructions are for Raspberry Pi Camera Module. Please note that Raspberry Pi Camera Module emits a lot of RF noise which may affect GPS performance. To workaround that wrap Camera Module and its cable using tape and alumnium\copper foil (use tape to keep foil from short curcuiting Camera Module pcb).
First things first. You need to expand filesystem and enable camera using Raspberry Pi configuration tool. Type the following command in console:
pi@navio: ~ $ sudo raspi-config
Raspi-config menu will appear on your screen. After changing the options press the Finish button. Expand filesystem and enable camera options require a reboot to take effect. Raspi-config will ask if you wish to reboot now when you select the Finish button.
After the installation has completed you can choose whatever platform you want to stream FPV to.
If you're going to stream to a Ubuntu PC, install the some packages locally beforehand.
user@ubuntu: ~ $ sudo apt-get update user@ubuntu: ~ $ sudo apt-get install gstreamer1.0-tools gstreamer1.0-plugins-good gstreamer1.0-plugins-bad
Download and install QGroundControl for Android.
Find IP address of your device in preferences. You'll need it in order to connect to the phone from your RPi.
Use our tutorial to run ArduPilot using the IP you just found out.
Run QGroundControl and it will automatically detect your vehicle.
Launch video streaming on your Raspberry and the pictute will appear in left bottom corner of application screen. Tap it to run fullscreen mode.
Note: default port for video in QGC application is 5600
Here's the app in action
Mac OS X¶
The simplest way is to use brew. To install it run the following in your Mac terminal:
user@mac: ~ $ ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)" user@mac: ~ $ brew update user@mac: ~ $ brew install gstreamer gst-libav gst-plugins-ugly gst-plugins-base gst-plugins-bad gst-plugins-good
Download and install gstreamer for Windows.
Now everything is ready for streaming.
On your computer¶
For Ubuntu/Mac OS X:
user@mac ~ $ gst-launch-1.0 -v udpsrc port=9000 caps='application/x-rtp, media=(string)video, clock-rate=(int)90000, encoding-name=(string)H264' ! rtph264depay ! avdec_h264 ! videoconvert ! autovideosink sync=f
gst-launch-1.0 -v udpsrc port=9000 caps="application/x-rtp, media=(string)video, clock-rate=(int)90000, encoding-name=(string)H264" ! rtph264depay ! avdec_h264 ! videoconvert ! autovideosink sync=f
From now on, your computer will be waiting for the input stream from Raspberry PI2. Once it gets a stream, you'll see the real-time video from your drone.
pi@navio: ~ raspivid -n -w 1280 -h 720 -b 1000000 -fps 15 -t 0 -o - | gst-launch-1.0 -v fdsrc ! h264parse ! rtph264pay config-interval=10 pt=96 ! udpsink host=<remote_ip> port=9000
<remote_ip> is the IP of the device you're streaming to.
Adjust bitrate with -b switch or -fps if your video lags behind.
Autostarting on boot¶
To automatically start videostreaming on boot you need to create systemd service:
sudo touch /etc/systemd/system/raspicam.service
Edit the service to make it look like this:
[Unit] Description=raspivid After=network.target [Service] ExecStart=/bin/sh -c "/usr/bin/raspivid -n -w 1280 -h 720 -b 1000000 -fps 15 -t 0 -o - | gst-launch-1.0 -v fdsrc ! h264parse ! rtph264pay config-interval=10 pt=96 ! udpsink host=<remote_ip> port=9000" [Install] WantedBy=default.target
Don't forget to set IP of the device you're streaming to.
After that run these commands:
sudo systemctl daemon-reload - to let systemd know of this service
sudo systemctl enable raspicam - to enable on boot
sudo systemctl start raspicam - to test it out
From now on raspivid will start automatically on boot. To disable autostart run this command:
sudo systemctl disable raspicam
Feel free to ask on our forum if you stumble upon any problems. We're always there at your convenience.