HEVC video compression, also known as H.265 or High Efficiency Video Coding, is a video compression standard that reduces the amount of data needed to store or transmit video. It follows H.264/AVC and can deliver comparable image quality at a lower bitrate, depending on the content and encoder configuration.
For defense and surveillance systems, compression is important because cameras often generate more video data than many field networks can carry. An encoder compresses the video before transmission or storage, and a decoder reconstructs it for viewing or further processing.
Why HEVC Matters in Bandwidth-Limited Environments
Available bandwidth can be limited on UAVs, mobile surveillance systems, remote sensors, and other platforms that rely on wireless or constrained communications links for their operation. Higher-resolution video and multiple simultaneous feeds increase the amount of data that must be handled.
HEVC compression helps reduce that data rate. This can make it possible to transmit high-resolution imagery over a link that could not efficiently carry the uncompressed video. It can also reduce storage requirements when video must be recorded locally. The actual bitrate needed depends on resolution, frame rate, scene complexity, image-quality requirements, and encoder settings.
HEVC for Real-Time Surveillance and ISR
In real-time surveillance and intelligence-gathering applications, compression efficiency is only one part of the video chain. The encoder must also process the video quickly enough for the application. Excessive processing or buffering can add delay between what the camera captures and what an operator sees.
Maris-Tech integrates H.265 encoding and decoding into compact video-processing platforms for UAVs, vehicles, surveillance systems, and other edge applications. These systems are designed to handle video close to the source, where compression can reduce the amount of data that needs to cross the communications link.
HEVC Compared with Older Compression Standards
H.264 remains widely used and may still be the right choice where compatibility with existing equipment is a priority. HEVC is a newer standard designed to improve compression efficiency, making it particularly useful for higher-resolution video or applications with limited bandwidth.
The choice between codecs depends on the complete system. Integrators need to consider the cameras, processing hardware, network, receiving equipment, latency requirements, and interoperability with existing infrastructure rather than selecting a codec based on compression efficiency alone.
Related Maris-Tech Resources
Military Grade HEVC | 4K HD Encoder/Decoder | Military Surveillance
Frequently Asked Questions
What is HEVC video compression?
HEVC, or H.265, is a video compression standard that reduces the data needed to transmit or store video while maintaining useful image quality.
Why is HEVC used for defense and surveillance video?
HEVC is used for defense and surveillance video because it can reduce bandwidth and storage requirements for high-resolution or multi-stream video, which is useful on constrained field networks and remote platforms.
How does HEVC compare to older video compression standards?
HEVC was designed to provide greater compression efficiency than the older standard of H.264, although H.264 may still be preferred where compatibility with existing systems is important.