This will really depend on what GPS device you choose to use with the geoDVR. The geoDVR Mini ships with a Garmin 18x receiver and the geoDVR Gen3 features an internal GPS receiver and with that you can probably expect around 3 meter accuracy. The geoDVR Mini can connect to most NMEA-compliant GPS devices so if you have a high-end survey grade GPS unit with differential correction you can use that. In airborne applications, when connected to a compatible gimbal camera with the correct metadata parameters, the geoDVR Mini also can geotag where the camera is looking at the ground with great accuracy to display the “camera target footprint” on the map, or CTF as we call it.
- Scenery (A complex scene of a city with many different colors can be compressed less than a pure blue sky for example)
- Encoding quality (default is 'High' on the geoDVR)
- Resolution, Framerate, and Color Depth
- Number of channels you are recording
- Codec (geoDVR uses H.264)
- Camera Sensor/quality
The Ethernet ports can be used for our geoDVR RAC (Remote Access Control) software in case someone wants to control the geoDVR via a laptop instead of touchscreen monitor. It can also be used to quickly remove video and other data from the geoDVR with a laptop (Instead of using the removable hard drive or USB ports.) The geoDVR also now supports some Ethernet-based cameras.
The USB ports are used for things like the Remote Start-Stop & Waypoint Trigger, USB connection to a touch screen monitor, connecting a keyboard and mouse for when setting up and configuring the geoDVR. Some customers also use the USB to move the still photos from a gimbal camera and put them on the geoDVR SSD.
The geoDVR Gen2/3 hardware has proven to be one of the most reliable commercial geospatial video recorders available and when properly configured and powered should provide you with dependable recording for years to come. However, the geoDVR does offer several ways to insure it is successfully recording video during flight (or not):
With a Monitor Connected
If using a monitor connected to the geoDVR there is a status indicator bar at the bottom of the primary geoDVR interface. In the status indicator bar is a section called “Is Recording.” These square icons indicate the recording status of each of the video channels going to the geoDVR:
With this capability the geoDVR is constantly checking to make sure fields are being written to the geoDVR in real time.
Also there is the System Output Status Panel. This panel displays a variety of system status such as the live status of the GPS connection, user actions and system errors (if encountered).
You can see an example of the geoDVR successfully recording 3 channels of geospatial video in flight in this video:
With Audio Connected
Using the communications systems adapter for aircraft audio, or even just a simple speaker or ear bud for the observer, the geoDVR will provide audio warnings when it detects video is not being recorded.