12/4/2023 0 Comments H.265 video compression![]() ![]() At a typical 30 frames per second, each second of HD video would occupy 248,832,000 bytes (~249 MB).A single frame of high definition (1920x1080) video in full color (4 bytes per pixel) is 8,294,400 bytes.Imagine the amount of data needed to store uncompressed video: The professional security market benefits from this important technical achievement.This guide introduces the video codecs you're most likely to encounter or consider using on the web, summaries of their capabilities and any compatibility and utility concerns, and advice to help you choose the right codec for your project's video.ĭue to the sheer size of uncompressed video data, it's necessary to compress it significantly in order to store it, let alone transmit it over a network. With H.265, the professional security market will continue to develop and deploy more advanced high-resolution, high-performance cameras, and users will be able to send more video data over their existing infrastructure, or achieve the same information content with less infrastructure. H.265 represents another leap forward in video compression technology and offers the potential to reduce these costs and make 4K and other higher-resolution video formats more accessible for security applications. There is value in having better quality images and fast frame rates, but the related increases in bandwidth and storage requirements often make it difficult for organizations with limited budgets to take advantage of higher quality video deployments. This saves valuable compute resources when decoding multiple live images simultaneously. When an operator clicks on an image to enlarge, many VMS systems can automatically switch to a high-resolution H.265 stream for maximum clarity. A popular hybrid workflow for multi-stream capable cameras is to stream lower-res H.264 thumbnails in a live x-by-y grid view and record high-resolution H.265 stream. In a similar vein, a new extension of the system can be installed with H.265 capability (in a newly constructed wing, for example) but set to operate using the older protocol for a time to integrate into the existing system. Once a budget is available, the NVRs can be upgraded and the cameras can be set to operate using H.265. Upgrading a Part of a System, or Adding a New Section onto an Existing System: To help end users gradually transition to H.265, it is best to choose cameras that employ a triple codec that enables simultaneous streaming of H.265, H.264 and MJPEG formats. ![]() If the existing wired infrastructure is in good condition, it is highly likely that you can upgrade the endpoints to H.265-capable devices and gain all the benefits of the latest protocols with only a fraction of the cost of a new system. If the entire system must be pulled and replaced, then follow the recommendation above, knowing that the new system will be an investment with a long-planned life. It is critical to plan carefully, and work with an installer/integrator experienced with upgrade projects. Upgrading an Existing System: Next to a completely new installation, a full upgrade of an existing system is the largest possible project – and if the wiring needs to be replaced, the project can easily cost more than an entirely new system.Specifying the H.265 end point equipment (cameras and recorders) may cost more than H.264 equipment today, but the infrastructure savings should more than offset that difference over time. There is no reason to install a waning technology now when the advantages of the new system are so clear, and the time to install the appropriate infrastructure is during construction. Completely New Systems: If a new business, building or campus under construction needs a completely new system, push to specify a fully H.265 system.Here are some sensible recommendations to help installers and end users who are thinking about new systems, or considering upgrades, decide on the best path to H.265: As with all new technologies, the optimal time to make the transition depends on the user’s situation and requirements. ![]()
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