foreword
Recently, I was working on media security protection, but I found something about the video stream that made me dizzy, so I searched for this chip, and then I saw this protocol. So come here to record and learn together.
Chip itself: CV300
Hi3796C V300 is the 8K+AI flagship chip, supports 8KP120 decoding and display, and supports mainstream decoding protocols such as AVS3/H.265/AV1 . It is a high-performance SOC chip suitable for markets such as 8K ultra-high-definition set-top boxes and smart home brains.
It integrates 8-core 64-bit Cortex-A73 CPU and Mali-G52 MC6 GPU, supports 4K UI, and can provide users with a dazzling human-computer interaction interface and rich intelligent application experience.
Integrated independent NPU, providing powerful edge intelligent computing capability, integrated dual-core HiFi3 audio DSP, supports 3D audio decoding, sound effect processing, and intelligent audio processing.
It can meet the growing application requirements of 8K ultra-high-definition multimedia playback, smart home, games, intelligent interaction, intelligent audio-video interaction, etc., and supports the realization of stream compatibility, smooth ultra-high-definition video playback, image quality, and overall machine performance. The best user experience in the industry.
It supports rich peripheral interfaces such as GE, USB3.1, SATA/eSATA, PCIe3.0, MIPI TX, HDMI TX/RX, and provides flexible connection solutions.
What is this decoding protocol? Come and see, let's not get bogged down in the details.
AVS3 new generation video codec technology
Born for 8K applications!
AVS3 new generation video codec technology
Why code technology?
Video is an effective carrier for information transmission and an important source of data acquisition in the intelligent age. With the vigorous development of mobile Internet technology, video is ubiquitous. Live video, video on demand, short video, and video chat have fully integrated into everyone's life. In the future, more than 80% of public network traffic and more than 70% of industry application data will be video data.
The development of video technology has ranged from standard definition to high definition to ultra high definition . Ultra high definition video is an important basic support for the development of emerging industries such as new media, VR, light field, and naked-eye holography. It is also an important content support for artificial intelligence fields such as smart medical care and driverless driving. .
While these new application scenarios and business model reconstruction provide users with the ultimate experience, they also bring about multiple expansions in resolution, frame rate, color gamut, and field of view. The amount of video data has reached the blowout era. Video transmission and storage Facing huge challenges.
Is data storage and transmission an urgent problem to be solved in the era of video blowout?
Codec is the core technology to ensure the user's video experience
. How to improve the video quality as much as possible under a certain bandwidth occupation, or reduce the bandwidth utilization as much as possible while maintaining the quality?
Video codec technology came into being.
Video coding and decoding is to use algorithms to remove redundant information of video data after the camera captures the picture and pre-processes, compresses, stores and transmits the image, and then decodes and converts the video format to pursue within the available computing resources. Video processing technology with the highest possible video reconstruction quality and the highest possible compression ratio to meet bandwidth and storage capacity requirements. Continue to provide users with a higher quality video experience.
The continuous improvement of communication capabilities provides basic support for ultra-high-definition display applications, and 8K has gradually become the mainstream scene for many audio-visual enjoyment such as sports events, large-scale live broadcasts, and movies. High resolution and high frame rate not only bring a better visual experience, but also help to convey richer data information. The emergence of video codec technology has greatly balanced high-quality video reconstruction and high-efficiency video compression, making it possible to implement 8K commercial scenarios.
Development History of Codec Technology
SD
Standard definition stage: standard definition digital TV and DVD machine stage
In the early 1990s, ISO/IEC formulated the MPEG-1 video standard for low-resolution video conferencing ; MPEG2 is used for standard definition digital TV and standard definition DVD fields
HD
High-definition stage: the video standard of satellite TV channels was improved.
In the late 1990s, MPEG-4 and H.263 standards were born in the field of streaming media.
In order to meet people’s higher requirements for high-definition video quality, ITU-T and ISO/IEC formulated H. 264/MPEG AVC video standard
The AVS working group released the first-generation audio and video codec technology standard AVS+, benchmarking H.264/MPEG AVC in the same period
4K UHD
In 2013, ITU-T and ISO/IEC formulated the HEVC/H.265 standard for people's pursuit of 4K ultra-high-definition image quality. In 2016, the AVS working group formulated the second-generation
ultra-high-definition audio and video editing code technology Standard AVS2, the performance is nearly double that of AVS1, the compression efficiency is comparable to the international standard H.265/HEVC**, and the performance is better than HEVC in full-frame encoding and monitoring scene encoding**
8K ultra high definition stage
In 2017, the International Standards Organization began to formulate the next-generation video compression standard. The VVC
AVS Working Group released the third-generation 8K-oriented audio and video codec technology standard.
AVS
AVS is my country's second-generation source coding standard with independent intellectual property rights. It is the abbreviation of the "Advanced Audio and Video Coding for Information Technology" series of standards. It includes four main technical standards and compliances: system, video, audio, and digital rights management. Supporting standards such as testing.
internationality
There are two main series of international audio and video codec standards:
- ISO/IEC (International Organization for Standardization) MPEG series standards formulated by JTC1; MPEG-2, MPEG-4, MPEG-4 AVC
- The H.26x series of video coding standards and the G.7 series of audio coding standards formulated by the ITU (International Telecommunication Union) for multimedia communications.