Video Preview Path Frame Rate Reduction
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Solution Overview
Problem
Video recording devices face increased bandwidth and power consumption when generating and displaying previews of high-quality video data, such as HD and UHD, due to the large size of recorded video data, which necessitates a method to reduce processing demands in the preview path.
Innovation Solution
The method involves removing a portion of the video data, such as discarding every sixth frame, and utilizing encoder statistics to determine redundant frames for removal, thereby reducing the data processed in the preview path, and using coding information to optimize video data processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If high-quality video data is recorded and displayed in preview, then video quality is improved, but bandwidth and power consumption increase
Solution Approach 1:
The patent segments the video processing into two separate paths: a full-quality encoding path that maintains high video quality, and a preview path that uses a reduced frame rate. This segmentation allows the system to maintain high video quality for recording while reducing the processing load and power consumption for preview display by processing only a subset of frames in the preview path.
2Manufacturing precision
If high-quality video data is recorded and displayed in preview, then video quality is improved, but bandwidth consumption increases
Solution Approach 1:
The patent segments the video data flow into separate encoding and preview paths. The encoding path processes all frames at full quality, while the preview path selectively processes only certain frames at a reduced frame rate. This segmentation reduces the bandwidth consumption for preview transmission and display while preserving full video quality for the recorded output.
3Manufacturing precision
If full video data is processed for preview, then preview quality is improved, but processing time and complexity increase
Solution Approach 1:
The patent uses encoder statistics generated during the encoding process to identify redundant frames before preview processing. By performing this preliminary analysis and using the encoder's intermediate results, the system can determine which frames are worth displaying in the preview without requiring full processing of all frames, thus reducing processing time while maintaining acceptable preview quality.
Data Source
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AI summary
An apparatus configured to record and process video information includes a memory, display, and a processor in communication with the memory and the display. The memory is configured to store video data. The display is configured to display a preview of the video data. The processor is configured to record the video data at a first frame rate, process the recorded video data via removing one or more frames from the recorded video data, the processed video data having a second frame rate that is lower than the first frame rate, and generate the preview to be displayed by the display based at least in part on the processed video data.