Session-Based DASH MPD Customization via Period-Level SBD Descriptors
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Solution Overview
Problem
Current dynamic adaptive streaming over HTTP (DASH) technologies lack a generalized solution for customizing media presentation description (MPD) files per session, requiring a new session-based description (SBD) format for each application, which is inefficient and application-specific.
Innovation Solution
The implementation of essential and supplemental property descriptors in MPD files allows for the association of multiple session-based description (SBD) files, enabling dynamic application of SBDs to periods based on ID values and URLs, ensuring session-specific customization without generating unique MPDs per session.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single SBD file is applied to the entire MPD, then the system structure is simple, but the adaptability for different sessions is insufficient
Solution Approach 1:
The patent divides the SBD application into period-specific segments by introducing supplemental property descriptors at the period level. Each period can independently specify which SBD files to apply, allowing different sessions to have customized SBD applications for different periods within the same MPD structure.
Solution Approach 2:
The patent makes the SBD application dynamic by allowing the selection of SBD files to change based on the period. Instead of a static single SBD applied to the entire MPD, the system dynamically selects and applies appropriate SBD files for each period based on session requirements, enabling flexible adaptation.
2Adaptability or versatility
If unique MPD files are generated for each session, then session-specific customization is achieved, but the system complexity and resource consumption increase
Solution Approach 1:
The patent makes the single MPD file universal by enabling it to serve multiple sessions through period-level SBD specifications. The same MPD file can be reused across different sessions with different SBD files applied to different periods, eliminating the need to generate unique MPD files for each session while maintaining session-specific customization.
3Adaptability or versatility
If multiple SBD formats are created for different applications, then each application gets optimized format, but the system loses scalability and requires maintenance of multiple formats
Solution Approach 1:
The patent creates a universal SBD format that can serve multiple applications through the period-level specification mechanism. The same SBD format and structure can be used across different applications and sessions, with the flexibility to apply different SBD files to different periods as needed, maintaining both application optimization and system scalability.
Data Source
AI summary
Aspects of the disclosure provide methods, apparatuses, and non-transitory computer-readable mediums for receiving media data of a session. One apparatus includes processing circuitry that receives a media presentation description (MPD) file and one or more session-based description (SBD) files. The MPD file includes one or more essential property descriptors for session-based dynamic adaptive streaming over hypertext transfer protocol (DASH). Each of the one or more essential property descriptors is associated with a different SBD file in the one or more SBD files. The processing circuitry determines, for a period in the MPD file, whether the period has a supplemental property descriptor for session-based DASH. The processing circuitry applies one of the one or more SBD files to the period in response to the period having the supplemental property descriptor. An identification value in the supplemental property descriptor is included in one essential property descriptor associated with the SBD file.