After the International Telecommunication Union (ITU) formally approved the HEVC codec (High Efficiency Video Coding) standard, there is no doubt that H265 encoder is an absolute hot topic in the field of video encoder hardware. With this technological breakthrough, the entire industry will change, making significant improvements in the fields that previously had issues with video effects due to bandwidth limitations such as widely used monitoring and network video industries with great concurrency demand, and even stepping into the era of high definition.
H.265 is a new video coding standard established by ITU-T VCEG after H.264. H.265 standard centers around the existing video coding standard H.264, retaining some of the original technologies while improving certain related technologies. The new technology uses advanced methods to optimize the relationship between stream, encoding quality, delay, and algorithm complexity, specifically researching how to enhance compression efficiency, robustness, error recovery capability, reduce real-time delay, reduce channel acquisition time and random access delay, and lower complexity. Due to H.264's algorithm optimization, it can achieve the transmission of standard definition digital images at a speed below 1Mbps. H265 can transmit 720P (resolution 1280*720) ordinary high-definition audio and video using a transmission rate of 1-2Mbps.
First, the biggest feature of H265 hdmi video encoder is that it can compress video to about 50% of the H.264 standard while ensuring video quality. For network video platforms that originally needed to pay high video bandwidth costs, this will save 40%-50% of bandwidth costs, or nearly double the content distribution with the same bandwidth costs.
Secondly, H.265 also has a significant improvement in the adaptability of the network and can run well under complex network conditions such as the Internet; This is of great significance to the network video field. Currently, high-definition network video can provide one million, two million, five million, or even higher pixels of video images. Taking 1080P as an example, the bit rate is generally around 6-8Mbit, which is smooth in the picture and has good picture quality. If there are hundreds or thousands of broadcaster-side streaming and viewer-side receiving streams in a system at the same time, the data flow of the entire network will be considerable. In network transmission, there may be video streams for storage, real-time and playback viewing, or third-party systems that need to call video streams. This will inevitably cause considerable pressure on network exchange equipment, servers, or require platform providers to pay high bandwidth costs or risk network collapse.
Therefore, how to meet the huge data flow transmission and reasonably plan the direction of video flow under limited network bandwidth has become an important problem that network video platforms need to solve. The greatest advantage of H.265/HEVC is that it can reduce the bandwidth of data transmission to half of H.264/AVC while maintaining almost the same picture quality. At the same time, it also supports a maximum resolution of 7680×4320. Therefore, whether it is 4K or other high-level high-definition videos in the future, they can be encoded using the H.265/HEVC format. The emergence of H.265 will undoubtedly bring significant development space to video encoding and decoding.
Third, H265 encoder aims to transmit higher quality network videos under limited bandwidth, and can play the same quality of video with only half of the original bandwidth. This also means that our mobile devices such as smartphones and tablets will be able to play 1080p high-definition videos directly online. The H.265 standard also supports 4K and 8K high-definition videos at the same time. It can be said that the H.265 standard allows network videos to keep up with the "high-resolution" trend of displays.
