Codec standards in AV Over IP

iSEMC AV Over IP equipment (NP Pro/NP Lite) supports H.265 and H.264 across the board.

 

So, What is H.264?

 

Currently, the codec standards on the market are more complicated. The International Organization for Standardization and Internet giants have published their own codec standards. However, we usually think that H.264 is the leading codec standard, and has been adopted by many mainstream software and hardware products, and supported by many peripheral devices. At the same time, its successor H.265 has also been placed countless hopes.

 

H.264, also the tenth part of MPEG-4, is a highly compressed digital video codec standard proposed by the Joint Video Group (JVT), which is the ITU-T Video Coding Expert Group (VCEG) and ISO/IEC Moving Picture Experts Group (MPEG). This standard is usually called H.264/AVC (or AVC/H.264 or H.264/MPEG-4AVC or MPEG-4/H.264 AVC).

 

The biggest advantage of H.264 is its high data compression rate. Under the same image quality, the compression rate of H.264 is more than 2 times that of MPEG-2 and 1.5 to 2 times that of MPEG-4. H.264 compression technology greatly saves users' download time and data traffic costs. While ensuring a high compression rate, H.264 also has higher video quality. Therefore, H.264 has been recognized by people and is widely used in network streaming data, various high-definition TV and satellite TV broadcasts. Except for dedicated hardware encoders and decoders, almost all IP cameras support H.264 encoding. Streaming programs on PCs and mobile phones usually also support it, and many web-based players or streaming platforms also support H.264 decoding. From signal encoding to decoding, the ecology of the use of H.264 is very complete.

 

What is H.265?How is it different from H.264?

 

H.265 is also called HEVC (High Efficiency Video Coding), which is a new video coding standard formulated by ITU-TVCEG after H.264. H.265 is mainly based on the existing video coding standard H.264. In addition to retaining some of the original technology, it also adds correlation to improve the relationship between code flow, encoding quality, delay and algorithm complexity. H.265 is designed to transmit high-quality network video under limited bandwidth, and only spends half of the H.264 bandwidth when playing the same quality video. The H.265 standard also supports 4K (4096x2160) and 8K (8192x4320) ultra HD video. It can be said that the H.265 standard enables network video to keep up with the "high resolution" of the display. But in some respects, compared with H.264, the H.265 encoding standard still needs to create a more complete ecosystem. Many platforms that support RTMP streaming do not yet support H.265 decoding, so users who want to use H.265 for streaming must purchase dedicated decoding equipment.

 

The future of AV Over IP in Surveillance and Security System

AV over IP continues to attract more and more attention among integrators in the AV industry, but there are still many people who question whether they should start implementing this technology. In fact, 45% of respondents in the 2019 industry survey said that they either did not accept or were unwilling to adopt AV-over-IP as a viable AV distribution solution-close to half. So, why hesitate, why is now the right time to use AV-over-IP?

 

Ultra-high flexibility and compatibility will make AV over IP products more and more popular.

The following is advantages based on the Surveillance and Security project.

 

For the advantages and future of AV over IP and traditional video wall controllers, please check ,

The security industry is an integrated video surveillance, network transmission, signal analysis and processing, data exchange, and security linkage to achieve various business system platforms, and it needs to be equipped with multi-level dispatch management to help commanders at all levels to make rapid decisions and real-time dispatch and emergency treatment.

 

Remote network control and display

Compared with the distance limitation of traditional servers, AV Over IP supports arbitrary control and display worldwide. Relying on the Internet connection, users can manage multiple surveillance rooms in different cities at the same time, and view all connected input devices in real time, including web cameras, storage servers, NVR...

 

 

Real-time deployment

The operator will receive the alarm information of the camera in real time, and can immediately issue commands through the network to achieve rapid command and dispatch in the face of emergencies.

 

 

Information storage and recall

It is indispensable to store video surveillance content. AV Over IP can arbitrarily match the corresponding network storage server through the network, and support the storage of the camera's screen as planned. The operator can view the recorded content at any time and anywhere and can export them.

 

 

AV over IP large-scale project solution in 2020

Many large-scale performances require strong support from the audio and video industries. The distance between multiple sets of screens in a venue is much greater than the transmission distance of a conventional HDMI cable, so AV Over IP is a good solution.

 

For example, in the hot E-sports industry in recent years, it needs to transmit the athlete's reaction ability, thinking ability and coordination ability to the eyes of all the audience in front of the screen in real time through the screen. With excellent scalability and simple wiring, AV Over IP has become a leading solution.

AV Over IP solution for large-scale Performances

Ultra-low latency with visually lossless compression

 

Decodes and Encodes professional-grade video with ultra-low latency, and the output delay is less than 60ms, guaranteeing exceptional user experience and response time in mission critical applications. Give viewers real-time visual enjoyment.

 

 

The system is stable and reliable

with mature project experience. The system is stable and reliable because of adopting mature technologies, not infected with the virus; Will not let the audience miss any beautiful moments.

 

Multi Control Protocols and Modes

The system can support multiple control protocols, and the required equipment control can be seamlessly connected with the iSEMC integrated intelligent control system with related control protocols. The system uses IO, infrared, and serial ports (RS232/RS485) to control various devices, such as lights in the stadium, lifting platforms, etc., to enhance the overall atmosphere effect

 

2020 The new trend of the audio-visual industry-AV OVER IP

IP over AV is booming

IP-based AV has appeared in the audio and video industry as early as, but it has been particularly popular in the past three years. In 2017 and 2018, IP video and audio products grew by nearly 130% for two consecutive years, attracting all audio and video professionals. IP over AV has become the most eye-catching focus in every major professional exhibition including ISE and InfoComm. Some professionals in the audio and video industry pointed out bluntly that IP audio and video have become the future trend of the audio and video industry. It is expected that from 2019 to 2025, its compound annual growth rate will reach an astonishing 60%.

 

 

What is the difference between traditional A/V and AV over IP?

The traditional A/V architecture is similar to the basic elements and main architecture of the IP over AV architecture. From a simple architecture diagram, AV on IP uses an encoder to replace the traditional A/V transmitter (Tx), and a decoder to replace the signal receiver (Rx). The audio and video matrix switcher has been replaced by a standard Ethernet IP switcher. IP switches are the same as those commonly used in every enterprise. As long as your organization has an IT infrastructure, it must have at least one IP switcher.

 

In IP AV, the structure, although the two architects look very similar, has two important differences:

 

Transmission: No matter how the system is connected, no matter what kind of signal and analog signal (such as S-Video or composite signal) or digital signal (such as HDMI, HDBaseT, SDI, etc.), traditional AV uses "physical cables" to transmit video signals Transmission via cable and matrix switcher. On the other hand, IP-based AV uses conventional cables (such as Cat5e or Cat6) to connect to the IP switch and transmit via Ethernet, WAN, LAN or WiFi.

 

Data format: Traditional A/V does not require any data compression, splitting or encoding to keep the data from the AV source intact, and then transmit the data to the AV destination through a series of physical cables and switch boxes. On the contrary, in the AV over IP architecture, the data of the AV source is encoded into network data packets by the encoder, and each data packet contains a part of the original data, the target IP and the original data sequence. The IP switcher sends the data packet to the target decoder, and then decodes and reassembles the data packet into a data format acceptable to the AV target for display or control functions.

 

Switching method: In traditional A/V, the matrix switcher plays an important role in transmitting the signal from the signal source to the designated target. Except for some extended models, most matrix switchers have a fixed number of ports, which are distinguished by input and output ports. Generally, matrix switchers are hardware-based point-to-point technology. Common products include 4×4, 8×8, 16×16, or 64×64 matrix switchers. Take a 4×4 (4 inputs and 4 outputs) matrix switcher as an example, which can transmit 4CH AV source signals and switch to 4 arbitrary destination devices for display, playback or control. The difference is that the switching mode of AV over IP is to provide an IP address for all endpoints and broadcast the IP switcher broadcast data packet to the destination. The switch path is performed by specifying the source and destination IP addresses defined by the software. Since the port of the IP switcher can be connected to multiple IP switches for expansion, the number of source and destination endpoint devices is no longer limited by the number of matrix switcher ports. Most importantly, the number of endpoint devices can be It is arbitrarily expanded and adjusted.

 

Click NP Pro to learn more AV OVER IP product information.

What is AV over IP?

 

 av over ip porduct

AV over IP (audiovisual over the Internet) is the transmission of audio, video signals through a network cable infrastructure (such as WAN, LAN or Internet). Network-based connections make communication between devices easier. NP Lite is the AV Over IP-based platform created by iSEMC, which is composed of encoders, decoders. Compared with the traditional analog AV environment, IP-based AV refers to the use of standard network equipment to switch and transmit video and audio signals.

 

 

 

The development of IP Over AV in the professional AV industry

 

Due to its High Scalability, we clearly see that traditional analog AV and audio have been quickly replaced by IP-based infrastructure, especially for audio and video systems with higher input and output channels and longer distances. Scalability is not only reflected in the ability to arbitrarily increase the number of input and output, but also in the compatibility with more devices, making it applicable to more industries, such as: digital signage, smart home, finance, etc.

 

 

Another limitation of traditional AV is the Distance between input and output. All hard-wired digital transmissions have practical limits on distance. When the wires are distributed throughout the entire facility hundreds of meters, the cost of installation and expansion will be higher. IP-based AV can be easily transmitted through copper cables (categories) and optical fibers. The maximum length of the category (CAT5, CAT6, etc.) cable is 100 meters. But you can switch and repeat sequentially. Using this precise packet-based switching technology, IP-based AV greatly improves flexibility by overcoming the limitations on the number of sources and destinations and overcoming distance limitations. The function of migrating from traditional AV to AV over IP is not affected, because all performance elements remain in the IP-based solution.

 

 

Convergence with data and communications, the NP Pro series has good Compatibility. It perfectly combines CVR Server (video storage) or Web Server to create an AV Over IP platform that can call any device data connected to the same network in real time For example, the alarm signal of IPC can be transmitted to the control room in any place through the network, and the control room can also visit the storage server in any place at the same time.