Adaptive Bit Rate Video Transmission System
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Solution Overview
Problem
Existing data transmission technologies, particularly those used in Internet Protocol networks, are inadequate for handling high-bandwidth, time-constrained data such as video, as they often lack sufficient bandwidth and are not well-suited to handle network congestion, leading to interruptions in video streaming.
Innovation Solution
An adaptive bit rate system that adjusts the bit rate of video transmission based on network congestion and historical behavior by using a bit rate map to select between higher and lower bit rates, ensuring uninterrupted video viewing by dynamically adjusting the streaming rate according to available bandwidth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a high bit rate is used for video transmission, then video quality is improved, but network congestion increases and temporal constraints are violated
Solution Approach 1:
The system dynamically adjusts the bit rate based on network conditions and historical performance data. The bit rate is not fixed but changes over time according to measured network latency and congestion levels, allowing the system to optimize video quality while maintaining temporal constraints under varying network conditions
Solution Approach 2:
The system implements a feedback mechanism where network latency and transmission performance are continuously measured and used to adjust future bit rate selections. Historical bit rate scheduling data is analyzed to predict optimal bit rates, creating a closed-loop control system that adapts to changing network conditions
2Reliability
If adaptive bit rate technology dynamically lowers streaming rate, then uninterrupted video viewing is maintained, but video quality deteriorates
Solution Approach 1:
The system uses multiple bit rate versions of the same video content, encoding the video at different quality levels. When network conditions are good, higher bit rate versions are used; when conditions deteriorate, lower bit rate versions are selected. This partial action approach ensures continuous playback by having pre-prepared alternatives at different quality levels
3Adaptability or versatility
If packet networks are designed for low bandwidth data transfer, then network flexibility is improved, but high-bandwidth video transmission capability is reduced
Solution Approach 1:
The video data is segmented into multiple packets that can be transmitted independently over the network. The system divides the video stream into manageable units that can be routed through the packet network efficiently, allowing high-bandwidth content to be broken down into smaller segments that fit within standard network packet structures
Solution Approach 2:
The system changes transmission parameters including bit rate, packet size, and scheduling intervals to optimize performance for video transmission over packet networks. By adjusting these parameters dynamically, the system adapts the high-bandwidth video content to the constraints of the packet network infrastructure
Data Source
AI summary
An adaptive bit rate system for use in transmitting data at adaptable bit rates. The bit rate may be adjusted according to historical behaviors and/or past operational settings, such as but not limited to adjusting a requested bit rate to a different bit rate depending the historical behavior.