Period-Level Asset Identification in DASH MPD
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Solution Overview
Problem
In Dynamic Adaptive Streaming over Hypertext Transfer Protocol (DASH), the inefficiency and inconsistency arise due to the repeated labeling of descriptors for multiple adaptation sets within periods, which complicates the identification of assets and inserted content.
Innovation Solution
Introducing a period-level asset identifier in the Media Presentation Description (MPD) to uniquely identify periods belonging to a main media content or inserted content, thereby avoiding repeated labeling across adaptation sets and enabling efficient content identification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If descriptors are repeated for each adaptation set within a period, then asset identification can be performed at the adaptation set level, but the MPD size increases and identification becomes inconsistent
Solution Approach 1:
The patent merges asset identification functionality from the adaptation set level to the period level by introducing a period-level asset identifier. This consolidation eliminates the need to repeat descriptors across multiple adaptation sets within the same period, reducing MPD size while maintaining identification accuracy through the unified period-level identifier.
2Measurement precision
If descriptors are repeated for each adaptation set within a period, then asset identification can be performed, but the system complexity increases due to repeated labeling
Solution Approach 1:
The patent simplifies the MPD structure by merging asset identification into the period element level. This eliminates the complexity of repeated labeling across adaptation sets while preserving accurate asset identification through the period-level identifier that applies to all adaptation sets within that period.
3Quantity of substance
If period-level asset identifiers are introduced, then MPD size and complexity are reduced, but compatibility with existing DASH standards may be affected
Solution Approach 1:
The patent implements period-level asset identifiers by nesting them within the existing period element structure of the DASH standard. This nested approach allows the new identifier to be integrated into the hierarchical MPD structure without disrupting the overall standard compatibility, while still providing the benefits of reduced MPD size.
4Measurement precision
If descriptors are repeated across adaptation sets, then each adaptation set can be independently identified, but streaming efficiency decreases due to redundant information
Solution Approach 1:
The patent merges asset identification to the period level, which applies to all adaptation sets within that period. This eliminates redundant information while maintaining the ability to identify adaptation sets through their parent period identifier, thereby improving streaming efficiency by reducing the amount of data that needs to be processed and transmitted.
Data Source
AI summary
A method of Dynamic Adaptive Streaming over Hypertext Transfer Protocol (HTTP) (DASH) comprising receiving an asset that comprises a media presentation described in a media presentation description (MPD), wherein the media presentation comprises one or more periods, and wherein each period comprises at least one adaptation set, and identifying the asset on a period level using one or more asset identifiers specified in the MPD.