On-the-fly Video Compression Ratio Switching
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Solution Overview
Problem
Existing video systems cannot maintain timing and primary colors while dynamically changing video compression ratios on-the-fly, which is essential for adapting to varying video resolutions and frame rates, leading to potential interruptions and quality degradation.
Innovation Solution
A system and method that enables seamless switching between different video compression ratios, from 1:1 to 10:1, while maintaining uncompressed video parameters, ensuring continuous and uninterrupted video flow, with a focus on maintaining timing and primary colors, by using a real-time video encoder and decoder that processes and decompresses video frames without interrupting the flow of high-definition uncompressed video.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If video compression ratio is changed on-the-fly to adapt to varying resolutions and frame rates, then bandwidth efficiency and adaptability are improved, but timing synchronization and color accuracy deteriorate
Solution Approach 1:
The system dynamically adjusts compression ratios in real-time based on varying video resolutions and frame rates while maintaining synchronization. The encoder can switch between different compression ratios (e.g., 4:2:0, 4:2:2, 4:4:4) on-the-fly without disrupting timing or color accuracy, allowing adaptability to different display requirements while preserving reliability through continuous monitoring and adjustment of synchronization parameters
Solution Approach 2:
The invention changes compression parameters (chroma subsampling ratios, bit depth, frame rate encoding) dynamically to adapt to different video scenarios. By modifying these parameters on-the-fly while maintaining a buffer of pre-encoded frames at multiple quality levels, the system achieves adaptability without sacrificing timing synchronization or color accuracy, as the buffer allows smooth transitions between parameter sets
2Loss of energy
If higher compression ratios are used to reduce bandwidth requirements, then bandwidth efficiency is improved, but video quality and compression performance deteriorate
Solution Approach 1:
The system dynamically adjusts compression ratios based on scene complexity, motion intensity, and bandwidth availability. During low-motion scenes, higher compression ratios (e.g., 10:1) are applied to save bandwidth, while during high-motion or detailed scenes, lower compression ratios (e.g., 2:1) maintain video quality. This dynamic adaptation allows the system to optimize bandwidth usage without consistently sacrificing video quality
Solution Approach 2:
The invention applies different compression ratios to different regions or temporal segments of the video stream. Important scenes with high visual information are encoded with lower compression ratios to preserve quality, while less critical scenes use higher compression ratios for bandwidth efficiency. This local quality approach ensures that video quality is maintained where needed while achieving overall bandwidth reduction
3Manufacturing precision
If lower compression ratios are used to maintain video quality, then video quality is improved, but bandwidth consumption and device complexity increase
Solution Approach 1:
The system uses low compression ratios (e.g., 2:1 or 4:4:4) only when necessary to maintain high video quality for demanding content such as high-resolution displays or color-critical applications. For standard applications, the system dynamically switches to higher compression ratios, significantly reducing bandwidth consumption while maintaining acceptable quality. This dynamic strategy prevents unnecessary bandwidth consumption while preserving video quality when required
4Adaptability or versatility
If on-the-fly compression ratio changes are implemented, then adaptability to different display requirements is improved, but system complexity and processing requirements increase
Solution Approach 1:
The system pre-encodes video frames at multiple compression ratios and stores them in a buffer before transmission. When a specific display requirement is detected, the encoder simply selects and transmits the pre-encoded stream at the appropriate compression ratio, rather than performing complex real-time re-encoding. This preliminary action significantly reduces processing requirements and device complexity while maintaining full adaptability to different display requirements
Solution Approach 2:
The invention segments the video encoding process into multiple parallel encoding streams at different compression ratios. Instead of one complex real-time encoding operation, the system creates multiple simpler encoded streams that can be selectively transmitted. This segmentation reduces the computational complexity of each individual encoding operation while providing adaptability through selection among the segmented streams
Data Source
AI summary
Methods and systems for compression that maintains parameters related to uncompressed video (PRTUV) while changing video compression ratios on-the-fly. One embodiment of a system includes: A video transmitter that receives incoming high-definition uncompressed video (HD-UV) characterized by certain PRTUV. The video transmitter compresses the incoming HD-UV into a first compressed video of ratio between 1:1 and 5:1, and sends it over a communication link to a receiver that decompresses the video to an outgoing HD-UV. When the video transmitter receives a command to smoothly change on-the-fly the compression to a second compressed video of ratio between 2:1 and 10:1, it makes the change without interrupting the continuous flow of the incoming HD-UV. Wherein the outgoing HD-UV maintains the PRTUV before, during, and after the change from the first compressed video to the second compressed video.