Video Package Essence Analysis Kit for PSNR Measurement
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Solution Overview
Problem
Measuring the peak signal-to-noise ratio (PSNR) of video essence in packaged video files is time-consuming and labor-intensive, requiring unwrapping and decoding of the entire file, especially when dealing with large data sets and mixed progressive or interlaced formats.
Innovation Solution
A toolkit that indexes video packages, allowing for on-the-fly decoding and analysis of selected frames without unwrapping, enabling quick and automatic PSNR measurement by referencing frame indices and adapting to different file formats.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the video package is unpacked and decoded to measure PSNR, then the video quality analysis can be performed, but the processing time becomes very long
Solution Approach 1:
The patent segments the video package into individual frame files, allowing the system to analyze only specific frames rather than processing the entire video package. This segmentation enables selective frame extraction and comparison, significantly reducing processing time while maintaining measurement precision for the frames that are analyzed.
Solution Approach 2:
The patent extracts individual frame images from the packaged video file using frame indexing. By taking out only the specific frames needed for PSNR measurement rather than decoding the entire video package, the system achieves accurate quality analysis with minimal processing time.
2Measurement precision
If the entire video package is decoded to measure PSNR of individual frames, then complete video quality assessment is achieved, but the operator effort and keystrokes increase significantly
Solution Approach 1:
The patent performs preliminary indexing of the video package to create a frame index that maps frame numbers to their location in the packaged file. This preliminary action allows the system to directly access and decode only the specific frames needed for analysis, eliminating the need for operators to manually navigate through the entire video package and significantly reducing operator effort.
3Measurement precision
If the video package is fully decoded for PSNR measurement, then all frames can be analyzed, but the process becomes extremely time-consuming for long video files
Solution Approach 1:
The patent divides the video analysis task into segments by frame, allowing selective processing of individual frames or frame ranges. This segmentation enables the system to maintain comprehensive analysis capability while improving productivity by processing only the necessary frames rather than forcing analysis of all frames in long video files.
Solution Approach 2:
The patent implements partial action by analyzing only the specific frames needed for quality assessment rather than processing the entire video package. The frame index allows the system to perform partial decoding and analysis, achieving sufficient quality measurement without the excessive time cost of processing all frames in long video files.
Data Source
AI summary
Systems and methods are disclosed herein to a package essence analysis method comprising receiving, by a computer, first and second video files; indexing, by a computer, the first and second video files; decoding, by a computer, a selected frame of the first video file by referencing a first frame image using the index of the first video file; decoding, by a computer, a selected frame of the second video file by referencing a second frame image using the index of the second video file; and performing, by a computer, video quality analysis by comparing the decoded selected frame of the first video file to the decoded selected frame of the second video file.