Native Resolution Determination via Codec and Data Rate Mapping
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Solution Overview
Problem
Modern video reproduction systems often parameterize video processing elements based on inaccurate resolution information, as the reported resolution in video files or streams may differ from the native resolution due to scaling, leading to inefficient optimization of video processing applications.
Innovation Solution
A method is developed to determine the native resolution of video content by mapping the data rate and codec used for encoding, utilizing a look-up table that correlates codec and data rate with native resolution, and considering additional factors like frames-per-second and motion to enhance accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If video content is up-scaled or down-scaled prior to embedding in a file or stream, then the reported resolution can be adjusted to match the scaled resolution, but the native resolution information becomes inaccurate or lost
Solution Approach 1:
The patent creates a look-up table in advance that stores the relationship between data rates, codecs, and native resolutions. This preliminary action enables later accurate determination of native resolution without needing to preserve the original resolution metadata through scaling operations.
Solution Approach 2:
The patent introduces data rate as an intermediary parameter that indirectly reveals native resolution information. By analyzing the data rate in conjunction with codec information, the system can infer the native resolution even when direct resolution metadata is unreliable due to scaling operations.
2Ease of operation
If video processing elements are parameterized based on reported resolution, then the parameterization process is simplified, but the optimization of video processing applications becomes inefficient
Solution Approach 1:
The patent replaces the direct use of reported resolution metadata with an automated determination system that uses data rate and codec analysis. This substitution maintains ease of operation by providing a clear determination method while improving productivity through accurate native resolution identification for optimized processing.
3Productivity
If the reported resolution is used directly for video processing parameterization, then the processing workflow is streamlined, but the resolution information may be wrong or inaccurate
Solution Approach 1:
The patent enables the video content itself to reveal its native resolution through its data rate characteristics. By analyzing the data rate and codec combination, the system allows the content to self-identify its native resolution without requiring external metadata, thus maintaining workflow speed while improving reliability.
Data Source
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AI summary
The present invention provides a method for determining a native resolution (105) of a video content (150), the method comprising determining (S1, S11) a type of codec used for the video content (150), determining (S2, S12) a data rate of the video content (150), and determining (S3, S13) the native resolution (105) of the video content (150) based on the determined type of codec of the video content (150) and the data rate of the video content (150). Further, the present invention provides a method for creating a look-up table (LT), a device (100) for determining the native resolution (105) of a video content (150), and a non-volatile data carrier (103).