Feedback Reference Frame for Video Encoding
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Solution Overview
Problem
Current video communication systems face challenges in maintaining video quality due to network instability and packet loss, leading to wastage of bandwidth and aggravated congestion when Intra frames are repeatedly sent during decoding failures.
Innovation Solution
A video communication system and method utilizing a feedback reference frame mechanism, where the video decoding end feeds back information to the encoding end, allowing it to encode Inter frames with a high compression ratio and reduced data amount, thereby reducing network data flow and avoiding the need to send large Intra frames.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If Intra frames are sent to restore decodable data when network packets are lost, then video decoding reliability is improved, but network bandwidth is wasted and network congestion is aggravated
Solution Approach 1:
The patent implements a feedback mechanism where the decoding end sends feedback information to the encoding end about decoding status and lost frame data. The encoding end uses this feedback to selectively send only the necessary reference frame data needed for decoding recovery, rather than always sending complete Intra frames. This feedback loop enables precise control over what data needs to be retransmitted, reducing unnecessary bandwidth consumption while maintaining decoding reliability.
Solution Approach 2:
The patent extracts only the essential reference frame data from complete Intra frames that is actually needed for decoding recovery. Instead of transmitting entire Intra frames with all their data, the system identifies and transmits only the specific frame portions or reference data required to restore decodable state, significantly reducing the quantity of transmitted data while maintaining the reliability benefit.
2Reliability
If Intra frames with large data amount are encoded and sent to restore decodable data, then video communication reliability is improved, but network congestion is further aggravated
Solution Approach 1:
The feedback mechanism allows the encoding end to receive real-time information about decoding failures and lost frames. Based on this feedback, the system dynamically adjusts what reference frame data to send, transmitting only the minimum necessary data to restore decoding capability. This prevents the aggravation of existing network congestion by avoiding unnecessary large-volume Intra frame transmissions.
Solution Approach 2:
The patent applies partial action by sending only the portion of reference frame data that is actually needed for decoding recovery, rather than transmitting complete Intra frames. This partial transmission approach maintains communication reliability by providing sufficient reference data while avoiding the excessive bandwidth consumption that would worsen network congestion and reduce overall transmission efficiency.
3Quantity of substance
If feedback reference frame mechanism is implemented to reduce data transmission, then network bandwidth efficiency is improved, but system complexity increases
Solution Approach 1:
The feedback reference frame mechanism introduces feedback loops at both the encoding and decoding ends. The decoding end analyzes decoding status and sends feedback about lost frames and needed reference data. The encoding end processes this feedback to determine optimal reference frame selection and data compression. While this feedback mechanism increases system complexity, it enables significant reduction in transmitted data volume by sending only essential reference information rather than complete frames.
Solution Approach 2:
The system dynamically changes parameters such as frame type selection (Intra vs. Inter), reference frame selection, and data compression ratios based on feedback information. These parameter changes allow the system to adapt transmission characteristics to current network conditions and decoding needs, reducing overall data transmission volume while managing complexity through algorithmic optimization rather than additional hardware components.
Data Source
AI summary
Embodiments of the invention provide a video communication system, device and method on the basis of feedback reference frame. The method includes: receiving, by a video encoding end, video frame information fed back by a video decoding end, determining a reference frame for encoding current video image according to the video frame information; encoding the current video image according to determined reference frame, and sending a video frame formed after the encoding; decoding, by the video decoding end, received video frame, and feeding back the video frame information to the video encoding end through a network and according to decoding result. By adopting embodiments of the invention, network data flow may be reduced. Meanwhile, phenomenon which may cause greater impact on the network, when it is necessary to send larger data amount since frame-loss or failed-decoding, may be avoided.