"Recently, Apple's Camera Video, which disclose IOS11 in WWDC (Worldwide Developers Conference, Apple) will support H.265 standard, brand new Mac OS operating system High Sierra also joined H.265 format video standards, support H .265 video decoding hardware acceleration and various encoders, video compression capacity increased by 40%.
Nowadays, the 2013 H.265 standard has been four years, but because of hardware, technology, the popularization of H.265 is full of challenges. At this time, the blessing of Apple products, H.265 can be popular, give video The industry brings a revolutionary impact?
About H.265 Technical Standards
H.265 is a mixed video coding frame for H.264, but there is a new technical feature, its core coding module includes: intra / inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-frame prediction, transformation, and entropy encoding, etc. In response to the encoding and parallel processing of the ultra HD video, H.265 defines a flexible block structure while optimizing and improving each encoding module, but also adding new coding modules (such as SAO), making compression efficiency significantly improved.
Compared to H.264, H.265 has the following advantages:
Under the same image quality, the H.265 occupied by the H.264, the storage space occupied by the H.264 saves 50%;
If the storage space is as large, then it means that H.265 will be higher than H2.64 in the same bit rate, theoretically increase 30% ~ 50%;
H.264 can realize a digital image transfer at a speed below 2Mbps, and H.265 / HEVC can implement 1080P full HD video transmission at a transmissive bandwidth below 1.5 Mbps;
Given the great advantage of H.265 encoding, it has an insurmountable advantage in terms of network adaptability, allowing it to transmit higher quality videos in low bandwidth network environments. This also means that in an existing network environment, online video viewing will be more smooth, and the company will pay less bandwidth cost.
The advantage of H.265 is obvious, in theory, this new technology will undoubtedly bring a new multimedia change. However, H.265 has always been called a seat since the birth of H.265.
H.265 is difficult to apply
Real-time coding difficulty
After the video is collected, it is especially important to reduce the amount of video data while ensuring the visual effect, in order to data transmission and storage, coding compression is particularly important. H.264 has been mature after years of accumulation, algorithm and chip's matching program. The H.265 encoding complexity is greater than H.264, and the encoding is time consuming, and the existing most terminal is still difficult to support real-time encoding. This is also the reason why the H.265 is almost no application in the field of live broadcast, and mostly in the field of on-demand.
The encoder is difficult to use
H.265 just specifies a range of available techniques, many characteristics can be used, or not. Therefore, the difficulty of the H.265 encoder is probably 2-3 times the H.264. If the direct setting code rate does not use any advanced command parameter adjustment, it is likely that the effect is more poor than H.264 (the default parameter setting is only for the low-rate environment, which is used for the medium and high yield environment side effects). This seems that H.265 is a good knife, but it is very unsausible, and only a large factory with technical and resource advantages can be moved.
Decoding difficulty
The H.265 brings a relatively higher compression efficiency higher than H.264, which also brings more than H.264 decoding difficulty, and the algorithm complexity has increased by 2-10 times, complex calculation. The processor puts forward challenges. However, most of the mobile phones after 2015 have no CPU bottleneck, decoding 780p, 1080P is no longer, and now, most players are not specifically compatible with H.265.
At present, many CDN vendors represent H.265 in publicity, but few have a complete solution. The H.265 live broadcast transfer program proposed by the manufacturer: H.265 Code Live -> H.265 decoded viewing, in order to reduce the encoding time, reduce the quality of the video, did not reflect the high-graphic low bandwidth of H.265 Features, it can be said that the current H.264 standard is lowered to reduce the quality of the quality and sacrifice quality.
Apple announces that IOS11 supports H.265 and will open this capacity to all developers, but for those video platforms for all ordinary users, only iOS support H.265 is not enough, popular applications are still a problem.
How to solve so many application puzzles - Yunfan accelerated H.265 program
Yunfan accelerates full considering the status of the customer's existing equipment network and the future expansion capabilities in the system. The first video live encoding code combined with the existing H.264 in China, the transport acceleration solution: H.264 encoding Lifting -> Cloud Turn H.265 -> Transfer H.265 Code Stream -> Terminal Understanding H.265 Play.
The specific process is as follows:
A. The high-definition H.264 live broadcast video stream is still used in the soil flow, and the high-definition code rate flows to solve the high-definition rate of high-definition code can be used to speed up the SDK;
B. Cloud rotation code, in the real-time transcoding of H.264 to H.265 in Yunfan accelerated live cloud server, and output H.264, and H.265 live stream, support H.265 screenshot, H.265 recording FLV, MP4 for follow-up on demand.
C.264 \ H.265 Decoding Play, H.264, H.265 Different coding formats Different coding formats, distributed through cloud sails to the terminal, CDN intelligently identify terminals and respond to videos of different copies. For H.265 decoding SDK, the enterprise can use the open source H.265 decoder published on the network, or the Yunfan H.265 decoded SDK, which optimizes the plurality of technologies to reduce the occupation of the CPU to the CPU. Reduce mobile phone fever, and avoid problems such as screen misalignment, audio and video.
Some technical breakthroughs in the program:
HD streaming in existing network environments, network video HD and smooth seem to be contradictory, often sacrificing quality and exchange. Restricted to the anchor network, reducing quality during the encoding and decree, naturally also reduces the viewing experience of all users. Yunfan accelerates an aquate stream to speed up SDK, supporting real-time no Carton stream of HD video, and protects the quality of the video from the source.
The cloud real-time transcoding will compute the H.264 video to H.265 is large, and the server side will cause huge pressure during the live broadcast, which may be the reason for other manufacturers without the use of the program. Yunfan accelerates a big breakthrough, supports single server to 100-128 road H.265 live stream, 30% -50% compared to H.264 compression ratio, reduces near general bandwidth.
Convenient and quick and unsound because the equipment used in the market is based on supporting H.264 coding, but in order to play the low-code stream of H.265, high quality technical features, Yunfan accelerates this process in the middle of the process using H.265 The coding standard, through a compartment, transcoding process, transmits high quality video signals in low code stream, but also retains high quality pictures, without affecting the current H.264 system, new and old technologies mutually Compatible, complete docking. Enterprises use Yunfan accelerate CDN to implement H.265 transmission live broadcast, convenient and fast.
H.265 Prospect Outlook
At present, H.264 is very mature, H.265 real-time decoding does not have a CPU bottleneck, and H.265 cannot real-time high quality encoding, currently using Yunfan accelerated H.265 and H.264 solutions to video enterprises It is convenient and fast.
With the blessing of Apple, the promotion of audio and video companies, the support of CDN vendors and the upgrade of hardware technology, I believe that the next five years or even ten years, H.265 is likely to be mainstream, 4k, 8k, and VR, etc. Will be popular.
Recently, Apple's Camera Video, which is disclosed in WWDC (Worldwide Developers Conference, Apple) will support H.265 standard, and the new Mac OS operating system High Sierra has also joined H.265 format video standards, supporting H. 265 video decoding hardware acceleration and various encoders, video compression capacity increased by 40%.
Nowadays, the 2013 H.265 standard has been four years, but because of hardware, technology, the popularization of H.265 is full of challenges. At this time, the blessing of Apple products, H.265 can be popular, give video The industry brings a revolutionary impact?
About H.265 Technical Standards
H.265 is a mixed video coding frame for H.264, but there is a new technical feature, its core coding module includes: intra / inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-inter-frame prediction, transformation, and entropy encoding, etc. In response to the encoding and parallel processing of the ultra HD video, H.265 defines a flexible block structure while optimizing and improving each encoding module, but also adding new coding modules (such as SAO), making compression efficiency significantly improved.
Compared to H.264, H.265 has the following advantages:
Under the same image quality, the H.265 occupied by the H.264, the storage space occupied by the H.264 saves 50%;
If the storage space is as large, then it means that H.265 will be higher than H2.64 in the same bit rate, theoretically increase 30% ~ 50%;
H.264 can realize a digital image transfer at a speed below 2Mbps, and H.265 / HEVC can implement 1080P full HD video transmission at a transmissive bandwidth below 1.5 Mbps;
Given the great advantage of H.265 encoding, it has an insurmountable advantage in terms of network adaptability, allowing it to transmit higher quality videos in low bandwidth network environments. This also means that in an existing network environment, online video viewing will be more smooth, and the company will pay less bandwidth cost.
The advantage of H.265 is obvious, in theory, this new technology will undoubtedly bring a new multimedia change. However, H.265 has always been called a seat since the birth of H.265.
H.265 is difficult to apply
Real-time coding difficulty
After the video is collected, it is especially important to reduce the amount of video data while ensuring the visual effect, in order to data transmission and storage, coding compression is particularly important. H.264 has been mature after years of accumulation, algorithm and chip's matching program. The H.265 encoding complexity is greater than H.264, and the encoding is time consuming, and the existing most terminal is still difficult to support real-time encoding. This is also the reason why the H.265 is almost no application in the field of live broadcast, and mostly in the field of on-demand.
The encoder is difficult to use
H.265 just specifies a range of available techniques, many characteristics can be used, or not. Therefore, the difficulty of the H.265 encoder is probably 2-3 times the H.264. If the direct setting code rate does not use any advanced command parameter adjustment, it is likely that the effect is more poor than H.264 (the default parameter setting is only for the low-rate environment, which is used for the medium and high yield environment side effects). This seems that H.265 is a good knife, but it is very unsausible, and only a large factory with technical and resource advantages can be moved.
Decoding difficulty
The H.265 brings a relatively higher compression efficiency higher than H.264, which also brings more than H.264 decoding difficulty, and the algorithm complexity has increased by 2-10 times, complex computing compared to H.264. The processor puts forward challenges. However, most of the mobile phones after 2015 have no CPU bottleneck, decoding 780p, 1080P is no longer, and now, most players are not specifically compatible with H.265.
At present, many CDN vendors represent H.265 in publicity, but few have a complete solution. The H.265 live broadcast transfer program proposed by the manufacturer: H.265 Code Live -> H.265 decoded viewing Features, it can be said that the current H.264 standard is lowered to reduce the quality of the quality and sacrifice quality.
Apple announces that IOS11 supports H.265 and will open this capacity to all developers, but for those video platforms for all ordinary users, only iOS support H.265 is not enough, popular applications are still a problem.
How to solve so many application puzzles - Yunfan accelerated H.265 program
Yunfan accelerates full considering the status of the customer's existing equipment network and the future expansion capabilities in the system. The first video live encoding code combined with the existing H.264 in China, the transport acceleration solution: H.264 encoding Lifting -> Cloud Turn H.265 -> Transfer H.265 Code Stream -> Terminal Understanding H.265 Play.
The specific process is as follows:
A. The high-definition H.264 live broadcast video stream is still used in the soil flow, and the high-definition code rate flows to solve the high-definition rate of high-definition code can be used to speed up the SDK;
B. Cloud rotation code, in the real-time transcoding of H.264 to H.265 in Yunfan accelerated live cloud server, and output H.264, and H.265 live stream, support H.265 screenshot, H.265 recording FLV, MP4 for follow-up on demand.
C.264 \ H.265 Decoding Play, H.264, H.265 Different coding formats Different coding formats, distributed through cloud sails to the terminal, CDN intelligently identify terminals and respond to videos of different copies. For H.265 decoding SDK, the enterprise can use the open source H.265 decoder published on the network, or the Yunfan H.265 decoded SDK, which optimizes the plurality of technologies to reduce the occupation of the CPU to the CPU. Reduce mobile phone fever, and avoid problems such as screen misalignment, audio and video.
Some technical breakthroughs in the program:
HD streaming in existing network environments, network video HD and smooth seem to be contradictory, often sacrificing quality and exchange. Restricted to the anchor network, reducing quality during the encoding and decree, naturally also reduces the viewing experience of all users. Yunfan accelerates an aquate stream to speed up SDK, supporting real-time without Carton in high-definition video, protecting video from the sourcequantity.
The cloud real-time transcoding will compute the H.264 video to H.265 is large, and the server side will cause huge pressure during the live broadcast, which may be the reason for other manufacturers without the use of the program. Yunfan accelerates a big breakthrough, supports single server to 100-128 road H.265 live stream, 30% -50% compared to H.264 compression ratio, reduces near general bandwidth.
Convenient and quick and unsound because the equipment used in the market is based on supporting H.264 coding, but in order to play the low-code stream of H.265, high quality technical features, Yunfan accelerates this process in the middle of the process using H.265 The coding standard, through a compartment, transcoding process, transmits high quality video signals in low code stream, but also retains high quality pictures, without affecting the current H.264 system, new and old technologies mutually Compatible, complete docking. Enterprises use Yunfan accelerate CDN to implement H.265 transmission live broadcast, convenient and fast.
H.265 Prospect Outlook
At present, H.264 is very mature, H.265 real-time decoding does not have a CPU bottleneck, and H.265 cannot real-time high quality encoding, currently using Yunfan accelerated H.265 and H.264 solutions to video enterprises It is convenient and fast.
With the blessing of Apple, the promotion of audio and video companies, the support of CDN vendors and the upgrade of hardware technology, I believe that the next five years or even ten years, H.265 is likely to be mainstream, 4k, 8k, and VR, etc. Will be popular. "
Our other product:
