Video Frame Grouping for Decoder Buffer Discontinuities
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current video streaming systems face challenges in managing image frame numbering discontinuities, leading to unnecessary error corrections and synchronization issues between encoder and decoder buffers, particularly when inserting or buffering video sequences.
Innovation Solution
The method involves decoding compressed video sequences with indications of image frame numbering discontinuities, using buffer memory to provide filler frames that indicate intentional gaps, and ensuring the decoder does not initiate unnecessary error correction actions by identifying these gaps as intentional.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If video sequences are transmitted with compressed image frames using motion-compensated temporal prediction, then data transmission efficiency is improved, but buffer synchronization and decoding reliability deteriorate when frame numbering discontinuities occur
Solution Approach 1:
The patent applies preliminary action by inserting filler frames into the bit stream in advance to mark intentional discontinuities in frame numbering. This allows the decoder to be预先 informed about upcoming gaps in the sequence, preventing erroneous error correction attempts and maintaining buffer synchronization without compromising the efficiency of motion-compensated temporal prediction.
2Reliability
If error correction mechanisms are activated to handle potential frame losses, then decoding reliability is improved, but unnecessary error corrections increase processing complexity and reduce decoding speed
Solution Approach 1:
The patent implements feedback by providing explicit markers (filler frames) in the bit stream that inform the decoder about intentional discontinuities. This feedback mechanism allows the decoder to distinguish between intentional gaps and actual transmission errors, suppressing unnecessary error correction actions while maintaining reliable decoding, thereby reducing processing complexity without sacrificing decoding reliability.
Data Source
AI summary
A method of decoding a compressed video sequence, wherein image frames are entered into a buffer memory in connection with the decoding. The video sequence includes an indication relating to at least one discontinuity in the numbering of the image frames, which indication is decoded from the video sequence. Then, in response to the indication, the buffer memory is configured to provide a number of image frames corresponding to a discontinuity in the numbering of the image frames, and the image frames provided by the buffer memory are used in the decoding process. Preferably, said indication informs that at least one discontinuity in the numbering of the image frames in the video sequence are intentional, and the number of image frames provided by the buffer memory are used in place of image frames that do not exist at a decoder.