Supercharge Your Innovation With Domain-Expert AI Agents!

Method and system for splicing video streams

A splicing system and video stream technology, applied in the field of video encoding and decoding, which can solve problems such as incorrect cpbdelay, code stream violation, and delay mismatch.

Active Publication Date: 2018-06-08
CHINA TELECOM CORP LTD
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cpb_removal_delay value of the D-segment code stream of stream2 is originally calculated based on the C code stream of stream2. However, if the A-segment of stream1 and the D-segment of stream2 are simply spliced ​​together, the value of cpb_removal_delay in the D-segment code stream needs to be Adjust according to the length of segment A of stream1, resulting in a calculation error, that is, the spliced ​​cpb_reamoval_delay is incorrect
[0016] 2. The initial dpb_output_delay after splicing does not match
However, the image rearrangement relationship of the spliced ​​sequence is different, so the initial dpb_output_delay after splicing does not match
[0023] 3. The spliced ​​code stream violates the C-15 equation and C-16 equation defined in the HRD model
Therefore, it is easy to violate the above agreement for the spliced ​​code stream

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
  • Method and system for splicing video streams
  • Method and system for splicing video streams
  • Method and system for splicing video streams

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0080] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangements and numerical values ​​of components and steps set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

[0081] At the same time, it should be understood that, for the convenience of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship.

[0082] The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses.

[0083] Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods and devices should be considered part of the Authorized Specification.

[0...

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 invention discloses a video stream splicing method and system. The method includes the following steps that: SEI (Supplemental Enhancement Information) in splicing code streams is parsed; a dpb_output_delay value of spliced code streams is calculated according to the SEI, and the dpb_output_delay value, which is carried by the SEI is replaced, and decoding is performed according to the SEI, wherein the dpb_output_delay value which is carried by the SEI is obtained according to code streams before splicing. With the video stream splicing method and system of the invention adopted, problems existing in compatible consistency of an HRD (Hypothetical Reference Decoder) of the splicing code streams can effectively solved.

Description

technical field [0001] The present invention relates to the field of video encoding and decoding, and more particularly relates to a splicing method and system for video streams. Background technique [0002] With the widespread use of the H.264 / AVC (Advanced Video Coding, Advanced Video Coding) video coding standard in the industry, there are more and more requirements for video processing technologies related to H.264 / AVC, in which video stream splicing is often used It is used in application scenarios such as video editing, PVR (Personal Video Recorder, personal video recorder), and advertising video insertion. The key technology of video stream splicing processing is the video compression code stream splicing technology. [0003] The splicing operation of video compression code stream can be simply defined as the concatenation operation (Concatenation) of two mutually independent video compression streams, and the video compression stream after concatenation is required...

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): H04N21/234H04N21/44
CPCH04N21/4345H04N21/44008H04N21/44016
Inventor 陈杲张长学赵旭泽
Owner CHINA TELECOM CORP LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com