MPD Metadata Positional Coordinates for Partial Video Acquisition
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Solution Overview
Problem
MPEG-DASH lacks information on the positional relationship between partial videos, making it difficult for viewer devices to specify the acquisition destination of selected partial videos, especially in high-resolution video distributions like 4K × 2K and 8K × 4K.
Innovation Solution
Incorporating positional information such as left upper coordinates, width, and height into the MPD data, allowing devices to accurately identify and acquire the desired partial videos by describing the acquisition destination within the metadata.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If MPEG-DASH standard is used for video distribution, then video content can be distributed over HTTP, but positional relationship information between partial videos is not described in MPD data
Solution Approach 1:
The patent segments the video content into multiple partial videos (tiles) arranged in a matrix, and describes the positional relationship of each partial video in the MPD data using coordinates (i_x, i_y) that indicate the position in the matrix arrangement. This allows the distribution system to handle high-resolution videos by dividing them into manageable segments while preserving spatial information.
Solution Approach 2:
The patent introduces an intermediary mapping mechanism that connects the partial video identifiers in the MPD data to their actual acquisition destinations. By describing the matrix position (i_x, i_y) and dimensions (width, height) of each partial video, the system enables viewer devices to correctly identify and acquire the selected partial video content.
2Measurement precision
If high-resolution video content (4K×2K, 8K×4K) is distributed, then video quality is improved, but the complexity of specifying acquisition destination for partial videos increases
Solution Approach 1:
The patent changes the parameter representation by introducing a standardized coordinate system (i_x, i_y) and dimension parameters (width, height) in the MPD data. This parameterization approach simplifies the specification of partial video acquisition destinations by using mathematical coordinates instead of complex file paths or identifiers, making it easier to handle high-resolution video content.
Data Source
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AI summary
To realize a display processing device which is able to easily specify an acquisition destination of a partial video which the viewer desires to display in a specified display region. A video acquisition processing section (220) of a television (200) acquires MPD data (metadata) in which an identifier and an acquisition destination are indicated in association concerning each of a plurality of partial videos. The respective identifiers of the plurality of partial videos are identifiers which are able to specify the identifier of the partial video adjacent to the partial video without referencing other information.