Digital video recorders (DVRs) - Expert commentary

ONVIF Profile T and H.265: the evolution of video compression
ONVIF Profile T and H.265: the evolution of video compression

In today’s market, efficient use of bandwidth and storage is an essential part of maintaining an effective video surveillance system. A video management system’s ability to provide analysis, real time event notifications and crucial image detail is only as a good as the speed and bandwidth of a surveillance network. In the physical security industry, H.264 is the video compression format used by most companies. Some companies also employ H.264 enhancements to compress areas of an image that are irrelevant to the user at a higher ratio within a video stream in order to preserve image quality for more important details like faces, license plates or buildings. The H.265, H.264’s successor, will be increasingly used for compression in the future. Some companies are already using H.265 in their cameras and video management systems, while a host of other manufacturers are certainly preparing for its broader adoption in the years to come. Video compression technologies Reduced bandwidth and storage requirements are the primary benefits of video compression technologies Reduced bandwidth and storage requirements are the primary benefits of video compression technologies. In some cases, H.265 can double the data compression ratio of H.264, while retaining the same quality. Increased compression rate translates into decreased storage requirements on hard drives, less bandwidth usage and fewer switches – all of which reduce overall costs of system ownership. H.265 compression delivers a lower bitrate than H.264, which is relevant to end users and integrators because the lower bitrate reduces strain on hardware and can reduce playback issues. It’s very important that the compression format that is used is supported in all of the different components of a system: cameras, desktop computers on which the VMS is running and the VMS itself. It is also good for end users and integrators to understand the basics of video compression. Having a basic understanding of compression allows users to tweak settings to reduce bandwidth usage even more. Many cameras come with default settings that can be changed to ultimately reduce costs. ONVIF physical security In the physical security industry, ONVIF is working to incorporate into its specifications the use of new formats such as H.265 but is not directly involved in developing the compression standards themselves. With Profile T, the new ONVIF video profile released will employ a new media service that is compression agnostic. This means that it can support new video compression formats, including H.265, as well as new audio compression formats, with the ability to include new video and audio codecs as needed in the future without having to redesign its media service. In the physical security industry, ONVIF is working to incorporate into its specifications the use of new formats such as H.265 Standardisation organisations that are directly addressing new compression standards include the International Telecommunication Union (ITU), the Moving Picture Experts Group (MPEG) and a joint commission of the International Organization for Standardization (ISO)/International Electrotechnical Commission (IEC), which is addressing the coding of audio, picture, multimedia and hypermedia information. Other compression formats on par with H.264 and H.265 are being developed by companies such as Google. H.265 compression formats Using products that employ H.265 compression will reduce costs through bandwidth reduction, as will changing default settings on cameras, which are often conservative. Having a basic understanding of compression formats and how to tweak camera factory default settings also gives integrators the ability to further reduce bandwidth for added costs savings and increased system performance. These enhancements will analyse which parts of an image are most important and adjust local levels of compressions accordingly It is also worth noting that H.265 enhancements will likely be developed by camera manufacturers to further reduce bandwidth, as was the case with H.264. These enhancements will analyze which parts of an image are most important and adjust local levels of compressions accordingly. While H.265 itself is ready for prime time, its value as a tool for IP-based surveillance systems is dependent on support for the codec in all parts of the system – the VMS, server hardware, graphics cards and camera. Though widespread H.265 adoption is predicted, providers of these components are jumping on the H.265 bandwagon at different rates of speed. ONVIF is including support for H.265 in its new video profile, Profile T, because it believes it will become the most widely used compression format and ONVIF recognises the need to anticipate that migration as a future need of the industry. The new media service, which will be implemented with Profile T, will be future-proof in that when new compression formats are released in the future, ONVIF can adopt them very quickly. That flexibility will definitely help integrators.

HD over Coax provides cost-effective video surveillance upgrade
HD over Coax provides cost-effective video surveillance upgrade

According to IHS Market, it is estimated that there are over 60 million security cameras in the United States, and other reports say these cameras capture more than four billion hours of footage per week. Over the last decade, IP camera technology has dominated the conversation as it has provided users with a broad offering of enhanced image quality and features. With a large percentage of existing security systems relying on analogue, many end users looking for high definition (HD) video quality have been forced to take on a complete system overhaul. Infrastructure overhaul for HD video To make the switch, customers would need to change everything, from cameras to hardware to wiring– not to mention the lengthy installation process that would ensue. IP cameras also require higher Internet speeds and more cloud space. Whether constrained by budget, bandwidth or storage, many end users have been unable to adopt this new video surveillance method.Thanks to technological advancements within the security industry, HD over Coax offers a viable solution for integrators and end users alike Thanks to technological advancements within the security industry, HD over Coax offers a viable solution for integrators and end users alike. By utilising the current Coaxial cables, this offering yields high definition video, while requiring minimal infrastructure changes and is an optimal surveillance choice for security customers. Plus, with new advancements and updates being made frequently to this technology, there is a solution for every security need. The enhanced alternative of HD over Coax has been warmly welcomed in the security industry, thanks to its simple solutions and ever-evolving features. Many new analogue HD cameras are “plug and play,” able to connect directly to existing Coaxial cables. This eliminates the need for a complete system change, creating cost-savings for the end user and an enhanced video quality offering. Easy solutions for HD video As a result, integrators can cost-effectively upgrade their customer’s surveillance solution while using their legacy infrastructure, making it an attractive option for end users and an easy sell for dealers. Latency in video is another common issue with network-based camera systems, where even the slightest delay in video surveillance can hinder security response HD over Coax cameras themselves are always expanding and evolving to meet a wide array of security needs. With the introduction of fisheye and multi-sensor cameras, users now have a multitude of coverage options, not to mention the introduction of 4K bringing resolution options to the same level as IP. Some newer technologies are even touting 4K cameras paired with 4K digital video recorders (DVRs) made specifically for analogue systems. Longer cables grant transmission for up to 1600 feet, double the distance of standard analogue solutions, and triple that of IP systems. This single cable is able to transmit both HD video and audio. Recently, broadcast quality audio over Coax has become available in limited models, a substantial improvement over older analogue technology, which was unable to transmit audio. Stopping video delay Latency in video is another common issue with network-based camera systems. Even the slightest delay in video surveillance can hinder security response. IP cameras are forced to compress and packetise their video for transmission. The outcome of this is a reduced number of images per video, which in turn causes delay. HD over Coax on the other hand, delivers an unlimited amount of HD images in real time, with smooth motion and impressive clarity. Additionally, the point-to-point transmission delivers uncompressed video free of lag. Another touted benefit is that, unlike IP networked cameras, analogue systems provide a more secure video transmission. With so much sensitive information housed on a businesses’ network, adding another point of network access through an IP camera can create concerns for cyber security risks. HD over Coax delivers an unlimited amount of HD images in real time, with smooth motion and impressive clarity Preventing network hacking With HD over Coax, the physical connections between the camera and DVR prevent network hacking. By keeping the video surveillance system offline, security professionals are able to direct their attention to the physical threats at hand, rather than having to focus on deterring cyber security risks. One of the primary difficulties of deploying HD video solutions is the fact that many older systems utilise a wide variety of HD standards and platforms. To make matters more complicated, after HD over Coax was brought to market, manufacturers raced to create their own version of this technology. Today, the most popular proprietary standards are HD-CVI, HD-TVI and AHD. However, integrators and customers found that attempting to manage multiple HD technologies proved to be near impossible.Integrators and customers found that attempting to manage multiple HD technologies proved to be near impossible Diversifying surveillance through one DVR To combat these issues, manufacturers have introduced products with more flexibility to their portfolios. One example of this is the penta-brid DVR which grants the ability to seamlessly integrate multiple technologies deployed across one application. This means that systems with diverse camera brands and technologies, such as a mix of HD-CVI, HD-TVI, AHD, analogue or IP, can be connected through one DVR. For many end users with legacy analogue systems, penta-brid DVRs give them greater freedom to choose between a variety of solutions, rather than being limited to one option. With video resolution increasing, the space needed to store the footage is similarly rising. Penta-brid technology has been able to adapt to these evolving needs, giving users ample storage space to house the HD and 4K surveillance video with some of the newest models including H.265 compression.  HD casino surveillance made simple For casinos, HD images are critical for identifying unauthorised personnel and unlawful behaviours to create a safe environment for guests and staff While HD over Coax is beneficial to many end users and integrators, those in the casino and hospitality markets find it crucial. With a combination of high profile guests, large amounts of cash on hand, constant crowds and strict industry regulations, reliable video surveillance is a must. Deploying new IP systems comes at a stiff price. When looking to upgrade their video surveillance, casinos must also be mindful of the installation process. When moving to an IP-based system, ripping out old wires and replacing them with new is the standard practice. This practice can be both disruptive and costly, not to mention gaming regulations require casino activities be monitored at all times so a complete system shutdown would result in revenue loss. This cost can be hard to justify, especially when the current legacy analogue system remains in working condition with only the lower image resolution to date it. For these scenarios, the most cost-effective option is to leverage the legacy infrastructure, replace the existing cameras with new devices, and reap the benefits that HD video has to offer without any lapse in security. For casinos, HD images are critical for identifying unauthorised personnel and unlawful behaviours to create a safe environment for guests and staff. HD over Coax cameras now offer the same resolution as IP cameras with a plug and play approach, that cuts down on expense without sacrificing quality. For businesses and applications that are unable to adopt IP technology, whether it be cost or time prohibitive, HD over Coax now features most of the same benefits IP has to offer without breaking the bank. By providing clear images in real time, maximising existing infrastructure, and affording cyber security benefits, HD over Coax provides an attractive solution for many end users and integrators.

Video surveillance must modernise in storage, recording and on-demand access
Video surveillance must modernise in storage, recording and on-demand access

Dollars spent by video surveillance customers must go towards ensuring high-availability capture, storage and on-demand access to live and archived video. Reaching this goal mandates high-availability of independent components – camera, network, storage (edge, external), internet connectivity, display, all Video Management Software (VMS) components and an architecture that can take advantage of this. In this note, we focus on seeing our way through to a video surveillance architecture, that provides high availability storage, access to live and stored video content. Of all options available to store recorded video, edge recording is the only one that is unaffected by network failure Edge recording Of all options available to store recorded video, edge recording is the only one that is unaffected by network failure. This makes edge storage a must-have. But, this has some limitations at present: Edge storage capacity is limited. Edge media has a short lifetime, rated only for thousands of hours of continuous recording. Most cameras are not secure and physical damage to the camera could lead to catastrophic loss of edge stored content. As storage and compression technology evolve, the constraints imposed by (1) and (2) could go away. However, securing cameras will continue to be a barrier for most installations. Secure external storage It is thus imperative to also store video in secure external storage. Such an architecture uses edge storage to fill in content gaps created by network, external storage outages. As edge storage technology improves, larger gaps can be filled in, but one will always need external storage. By our definition, ‘external storage’ is a solution stack that includes storage media and all software (including VMS) that provide access to this storage. Access to live and archived video Access to live video can either be met by external storage or directly by the camera Every surveillance solution needs to provide access to live and archived video. Access to live video can either be met by external storage or (and) directly by the camera. All things being equal, having the camera directly provide live video access, is a higher-availability solution. There is dependence on fewer components in the chain. Solutions in the market use one of the above two approaches for access to live video. Due to limited capacity and low physical security of edge storage, it makes sense at present, to have external storage meet all requests for archive video. Thus, we are led to an architecture that has heavy dependence on external storage. Dual-recording For high-availability, external storage must be architected with redundancy. Ideally, independent components that make up external storage – storage media, associated hardware and software (including VMS components), should be individually redundant and have smart interconnectivity. However, solutions in the market rigidly tie these components together. Failure of a single component causes failure of external storage. For e.g. hardware failure of a server causes VMS component failure AND storage failure. DR provides a smart way to provide high-availability for external storage For these solutions in the market, high-availability is achieved by having additional external storage units that step-in during outages of primary units. If these additional units continuously duplicate primary units, access gaps are minimised, and archive access is un-affected during primary unit outages. This is the idea behind Dual-Recording (DR).  To meet cost budgets, these additional units can be configured to store subsampled (framerate, resolution) video content. A small number of additional units can support concurrent outages of all primary units. A few-to-many redundancy. Rising need for dual-recording Most cameras cannot be physically secured, and video content produced by a camera must be stored externally. Many VMS solutions use external storage to service live video access requests. Edge storage limitations impose restrictions on edge archive access at present. So, external storage is used to service requests for archive access too. Thus, a surveillance system ends up being over-dependent on external storage. DR provides a smart way to provide high-availability for external storage. As edge storage improves, it will be able to service archive access requests. VMS software will need to evolve, to use this capability smartly.

Latest Honeywell news

Honeywell launches X-618 public address system with cutting-edge features and upgradeable firmware
Honeywell launches X-618 public address system with cutting-edge features and upgradeable firmware

Honeywell introduces the new X-618 Public Address (PA) System and supporting speakers. This IP-based system is designed to serve all types of paging purposes and comes with cutting-edge features and a highly-efficient compact platform – convenient for designing and maintaining a wide range of medium to large-sized applications. Unified notification platform The Unified Notification Platform (UNP) a software solution to enable mass notification tailored to the needs of the end-user. UNP is an open platform that interconnects disparate systems within a mass notification ecosystem, or MNE. With UNP, emergency notifications are sent simultaneously to thousands of end-points on various communication platforms. Key features of the X-618 Public Address (PA) System are as follows: Integrates with all devices with IP addresses, expandable via Ethernet Extended point capacity supports larger and more complex installations (up to 250 controllers) RCA, XLR, internal network, internal storage (1GB flash memory) 4x8 audio matrix, 4 simultaneous audio outputs, 8 amplifier channels Flexible 8+1 or 4+1 amplifier backup Configurable speaker line supervision Flexible 8+1 or 4+1 amplifier backup Automatic fault diagnosis Automatic volume level control Zone broadcast auditing Quick and convenient programming Field-upgradeable firmware with easy system updates

Connected Technologies and Digital Watchdog unveil new software integrations to help dealers and customers
Connected Technologies and Digital Watchdog unveil new software integrations to help dealers and customers

Connected Technologies LLC, provider of a powerful cloud-hosted security management platform and Digital Watchdog (DW™), the provider of digital recorders, surveillance cameras and video management software have unveiled new integrations between DW Spectrum and Connect ONE that provide deeper reporting and management controls for dealers and their customers. Connect ONE and DW Spectrum integrate natively through software to receive or trigger notifications or events without system configuration such as opening a vulnerable in-bound port on the end-user’s network, port forwarding or connecting to the user’s IP address. Output control and lockdown With the expanded integration, dealers can add new feature sets, events and notifications gathered from DW Spectrum’s VMS, NVR or surveillance cameras for viewing and control on the Connect ONE, all-in-one interface. “Connect ONE is focused on expanding the possibilities for integrated systems for our dealer-customers,” said Dan Simon, Co-Founder and Managing Partner, Connected Technologies. “This integration gives dealers the ability to provide more value in their managed services offerings through Connect ONE,” he said. Connect ONE’s users can receive events to monitor the health status of the NVR or perform special logging of activities or analytics. All Connect ONE Event Rules can be activated in response to NVR events such as report logging, notifications to users and system control – including arming, disarming, output control and lockdown. Connect ONE pushed system events such as arming, alarm, access, trouble and audit changes to the NVR are supported. Providing complete solutions ConnectOne’s ability to simplify integration with a variety of technology presents an opportunity for DW Dealers" Events are shown on the DW Spectrum interface to indicate the source and type of event along with a text description, such as user, zone, door, area, etc. Events received by the NVR can also record video bookmarks, trigger a camera preset and increase recording quality. “We are excited to see our technology partners take a deeper dive into DW Spectrum’s open architecture and all the functionality it offers,” said Patrick Kelly, Director of IP Video Solutions, DW. “ConnectOne’s ability to simplify integration with a wide variety of technology really presents an opportunity for DW Dealers to provide complete solutions.” DW Spectrum and Connect ONE integrate via direct network connection or DW Cloud. Integrated security management solution Following set up, users can retrieve a camera list for quick and easy configuration, view live video, search playback recordings, record snapshots upon an event from intrusion/access system for video verification and review a 10-second pre-event and up to a 45-second post event video clip. DW Spectrum is a powerful and user-friendly IP Video Management software, highly optimised to provide unlimited scalability, unmatched bandwidth savings and simplified system setup and management. Connect ONE by Connected Technologies is a cloud-hosted integrated security management solution which provides a single user interface to control intrusion, access control, video surveillance, critical environmental monitoring and energy management. Connect ONE works with the Bosch B and G series as well as DMP XR/XT series, ELK M1 series and Honeywell Vista Turbo security and access control panels.

The role of building systems to ensure safety as employees return to work
The role of building systems to ensure safety as employees return to work

Returning to work after the global pandemic will not be business as usual, and security systems are an important asset when it comes to helping to keep occupants and buildings safe. For example, video analytics can provide insight into how spaces have previously been used and can help to predict where and when occupants encounter each other or congregate. These foot-traffic patterns can inform settings for a variety of devices – like ventilation and temperature controls – and even help owners create social distancing plans and monitor personal protective equipment (PPE) compliance. “While the ‘new normal’ is still being defined, we believe there will be a greater focus on creating healthier environments while also complying with new regulations,” says Marcus Logan, Global Offering Leader, Honeywell Commercial Security. “Temperature, humidity, energy efficiency, security, safety, comfort, productivity, and demonstrating compliance with regulations are all a part of a healthy building.” For example, social distancing is a new concept for the workplace. How do you make that happen in an open work setting, in breakrooms, elevator lobbies and meeting spaces? Optimised systems create healthier environments Anxious employees will need reassurance about returning to the workplace Building owners will need to look at how they can optimise their systems – or deploy new ones – to create a healthier environment. Building technologies, like those provided by Honeywell's Healthy Buildings solutions, provide building owners with more control over critical factors to encourage sustained compliance with changing building standards, safety guidelines, government-issued regulations, and a company's risk management policies. These solutions also provide transparency for occupants into a building's status, says Logan. Hygiene will be a critical issue: People will want to know that the spaces are ready for their return. Increased cleaning procedures and schedules will evolve, and a way will be needed to demonstrate the procedures are effective and that they have been strictly adhered to. Identifying ways to measure effectiveness of sanitisation and track compliance to the procedures will be a key challenge to solve. This is a space that will evolve significantly in the coming months and years, says Logan. Access control and video analytics Contact tracing is a new requirement in some businesses, and security technology – like access control and video analytics with advanced reporting – can help. Access control technology integrated with video analytics can be used to trace occupant movements within a facility. These technologies capture data that can be used with advanced reporting to provide a digital footprint of where a person has been within a facility and if they may have been exposed to someone identified as being infected with a contagious virus. Building owners can then proactively notify exposed individuals evolve to self-quarantine and minimise further spread of an infection. Video analytics can help to predict where and when occupants encounter each other Anxious employees will need reassurance about returning to the workplace. They will not only seek confidence that the building is optimised for a healthier environment but also that processes are in place to quickly identify and respond to potential issues. Transparency and visibility into how the building works and the health of the environment will help to reassure occupants returning to the workplace. “One way to do this is to share building analytics with occupants – to help them understand factors about the indoor air quality or occupancy density,” says Logan. Controlled health, safety and security Honeywell’s solutions provide building owners with more control over critical health, safety and security factors to encourage sustained compliance with changing building standards, safety guidelines, government-issued regulations and a company’s risk management policies, Logan adds. Visibility into how the building works and the health of the environment will help to reassure occupants returning to the workplace Every day there is new information coming from the medical and scientific community about COVID-19, and the building industry is just starting to learn what it all means. Logan warns that there is no single solution that will keep every environment healthy and safe. A good strategy features deploying a combination of solutions, optimising systems and being vigilant to make sure that companies are sustaining compliance to new and changing regulations, says Logan. “Today more than ever we must be mindful of the changing culture of how buildings are managed by making apparent the need to be mindful of health and well-being in all aspects of our lives,” says Logan. Honeywell has developed outcome-based solutions that allow building owners to transparently address building quality factors while supporting their business continuity needs in the uncertain environment. “We’re giving them the data they need to confidently reassure their employees to accelerate their business operations,” he adds.

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