Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

H.265 Fast Transcoding Method Based on Code Stream Bit Number and Block Division Mapping

A bit number and block division technology, which is applied in the field of video image coding, can solve problems such as unacceptable, time-consuming, and various formats of source input code streams, so as to reduce the amount of calculation, shorten the transcoding time, and ensure the subjective and objective visual quality Effect

Inactive Publication Date: 2019-05-14
UNIV OF ELECTRONICS SCI & TECH OF CHINA
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the implementation process of full decoding and full editing is extremely time-consuming, especially in the process of transcoding, due to unknown block division, it is necessary to traverse various situations or select a large number of block situations, which is often not advisable in actual production applications
Therefore, the video fast transcoding method has a very strong practical urgency
[0010] In addition, when capturing and compressing video in different periods and different devices, different video encoding formats are used, resulting in a variety of stream formats input by the source.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • H.265 Fast Transcoding Method Based on Code Stream Bit Number and Block Division Mapping
  • H.265 Fast Transcoding Method Based on Code Stream Bit Number and Block Division Mapping
  • H.265 Fast Transcoding Method Based on Code Stream Bit Number and Block Division Mapping

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0060] figure 1 As shown, fast transcoding includes:

[0061] 101: Input information code stream.

[0062] 102: Select an MPEG-x series decoder according to the information of the input code stream to decode the input code stream, generate a corresponding YUV file and input it into the YUV buffer. At the same time, it counts the Bit, QP, CTU, encoding type EncodeType and other information of each encoding unit;

[0063] 103: Select the H.264 decoder according to the information of the input code stream to decode the input code stream, generate a corresponding YUV file and input it into the YUV buffer. At the same time, count the Bit, QP, CTU, encoding type EncodeType, etc. of each encoding unit;

[0064] 104: Select an H.265 decoder according to the information of the input code stream to decode the input code stream, generate a corresponding YUV file and input it into the YUV buffer. At the same time, count the Bit, QP, CTU, encoding type EncodeType, etc. of each encoding...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention provides a H.265 fast transcoding method based on the number of code stream bits and block division mapping, fully utilizes the information in the input code stream to guide H.265 encoding, reduces the calculation amount of block division and mode selection, and The transcoding time is greatly shortened, and the subjective and objective visual quality of the transcoded video is also guaranteed. The code stream format of the present invention is not limited to H.265 isomorphic transcoding, and the technology will support H.264 / AVC or H.263++, and even earlier heterogeneous transcoding of MPGE standards.

Description

technical field [0001] The invention relates to video image coding technology, in particular to H.265 fast video transcoding technology. Background technique [0002] For the transcoding application of the new generation of video codec standard H.265, first decode the code stream into YUV, Y4M and other formats as the source input, and then use the H.265 encoder to encode, which is called full decoding and full encoding . [0003] There are two types of H.265 video transcoding: one is homogeneous video stream transcoding, and the other is heterogeneous video stream transcoding. Homogeneous video transcoding refers to the conversion between code streams compressed according to the same video coding standard, while heterogeneous transcoding refers to the conversion between code streams compressed according to different video coding standards. [0004] In H.265, block encoding is adopted. Different from previous generations of encoders, the H.265 encoding standard uses a mor...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/122H04N19/176H04N19/184H04N19/40H04N19/70
CPCH04N19/122H04N19/176H04N19/184H04N19/40H04N19/70
Inventor 周益民郭江彭凤婷唐钦宇
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com