Subsequence Encoding with Convex Hull Variability Constraints
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Solution Overview
Problem
Existing media encoding techniques, such as monolithic and subsequence-based encoding, face inefficiencies and quality variations, leading to increased computational and storage resources usage and playback interruptions due to inconsistent bitrate and quality levels across media titles.
Innovation Solution
A computer-implemented method that generates encoded media sequences by creating a convex hull of subsequence encode points, iteratively optimizing variability constraints to reduce quality and bitrate variations, using a subsequence-based encoding application that partitions media titles into subsequences and encodes them at different resolution and rate control values.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If monolithic encoding technique is used to encode media content with uniform resolution and rate control value, then encoding process is simple, but encoding inefficiencies occur for simple portions consuming more computational and storage resources than necessary
Solution Approach 1:
The media title is partitioned into multiple subsequences based on content complexity characteristics. Each subsequence is then encoded independently with tailored resolution and rate control values appropriate to its complexity level, avoiding uniform high-bitrate encoding of simple portions while maintaining high quality for complex portions.
Solution Approach 2:
Different quality levels (resolution and bitrate) are applied to different subsequences based on their content complexity. Simple subsequences receive lower resolution and bitrate, while complex subsequences receive higher resolution and bitrate, optimizing resource usage while maintaining perceived quality.
2Loss of energy
If subsequence-based encoding varies resolution and rate control value across media title to reduce encoding inefficiencies, then computational and storage resources are optimized, but quality variations and bitrate fluctuations increase across the media title
Solution Approach 1:
The encoding parameters (resolution and rate control values) are dynamically adjusted for each subsequence based on content complexity, while the transition between subsequences is designed to be smooth and progressive, avoiding abrupt changes that would cause noticeable quality fluctuations or playback issues.
3Stability of the object's composition
If high bitrate is used to maintain consistent quality across all portions of media title, then quality consistency is improved, but bandwidth requirements and storage resources increase
Solution Approach 1:
The resolution and bitrate parameters are changed according to subsequence complexity rather than maintaining uniform high values. Simple subsequences use lower parameters reducing resource consumption, while complex subsequences use higher parameters maintaining quality where needed, achieving overall quality consistency without unnecessary resource expenditure.
Data Source
AI summary
In various embodiments, a subsequence-based encoding application generates a convex hull of subsequence encode points based on multiple encoding points and a first subsequence included in a set of subsequences that are associated with a media title. The subsequence-based encoding application then generates a first encode list that includes multiple subsequence encode points based on the first convex hull. Notably, each subsequence encode point included in the first encode list is associated with a different subsequence. The subsequence-based encoding application selects a first subsequence encode point included in the first encode list based on a first variability constraint that is associated with a media metric. The subsequence-based encoding application then replaces the first subsequence encode point included in the first encode list with a second subsequence encode point to generate a second encode list. Finally, the subsequence-based encoding application generates an encoded media sequence based on the second encode list.