In-vehicle DVRs, also called as dash cams, car cameras or accident recorders are becoming popular for surveillance monitoring, law enforcement and insurance settlements. Similar DVR solutions have also made their way into combat vehicles for situational awareness and reconnaissance applications. What is common to all of these is the need to have multi-directional viewing (typically using multiple cameras) and to record/stream the video feed from these cameras for offline/live viewing. The recordings often end up becoming the digital evidence for the aforesaid applications.
How are all these achieved?
Let us take a look at a typical multi-camera DVR installation for in-vehicle applications.
Multiple cameras are mounted in the vehicle. These are either looking outside (road ahead/behind, sideways) or inside (rear seat). Two types of cameras are typically used:
- Standard Cameras: Capture video and send raw/uncompressed video to DVR
- IP Cameras: Capture video and send encoded video to the DVR
Next, let us try to understand how these camera inputs are processed by the DVR.
|Record Multiple Cameras Independently||Record Composed Video from Multiple Cameras|
Recorded video is used as evidence during legal and training processes, while live streams enables remote actions (ex: back-up to be sent to officers on field). Additional security features can be built into the stream to allow safe access to streams over smartphones running authorized software.
There are several challenges in realizing such a system:
- Streaming with extremely low latency to enable real-time decision making.
- Accurate addition of metadata and tags related to time, date and GPS coordinates to recorded video to derive meaningful evidence for reconnaissance & surveillance applications.
- Fast and reliable back-up for off-line review and analysis.
Proper synchronization of all camera feeds for both recording modes (see table above), especially when trying to achieve a 360-degree viewing experience.
- Pre-event recording to enable recordings 1-2 minutes before the occurrence of an event of interest.
- Access control and user authentication for admissibility of recorded video in a court of law.
- Reliable 24×7 operation over industrial temperature range and harsh operating environments.
- Low power operation to avoid draining the vehicle battery even after long periods of operation.
So, how does one go ahead and set up an In-Vehicle DVR?
The answer is simple – Use Ittiam’s off-the-shelf RecordPro DVR Solutions which addresses all the challenges above!
Multi-channel Full-HD DVR
Low-Power Full-HD DVR
In addition, Ittiam’s player solutions on embedded (magnaPlay, clovePlay, limePlay) and mobile devices (adroitPlay Apps on iOS/Android) are available as accompaniments to RecordPro DVR Solutions to enable the remote playback & viewing of live streams or recorded files.