Dynamic Metadata for Adaptive Multimedia Playback
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Solution Overview
Problem
Static metadata in multimedia files, such as those used in video recordings, fail to adapt to changes in shooting orientation and environmental conditions, leading to suboptimal reproduction of multimedia content.
Innovation Solution
Introducing dynamic metadata that can be updated based on sensor data from devices like GPS, accelerometers, and orientation sensors, allowing the reproduction device to adjust playback accordingly, such as rotating images or adjusting brightness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If static metadata is used in multimedia files, then the file structure is simple and compatible with existing formats, but the reproduction quality deteriorates when shooting orientation or environmental conditions change
Solution Approach 1:
The patent applies the dynamics principle by transforming static metadata into dynamic metadata that can change over time. The metadata is structured with time codes and can be updated multiple times during multimedia recording to reflect changing shooting conditions such as orientation, brightness, and GPS location. This allows the reproduction device to adapt the visualization according to the actual conditions at different moments during recording.
Solution Approach 2:
The patent implements parameter changes by allowing metadata values to be modified during the recording process. Instead of fixed metadata entries, the system captures multiple sets of metadata parameters (orientation, brightness, GPS coordinates, etc.) at different time points, enabling the reproduction device to select and apply the appropriate parameters based on the playback context.
2Adaptability or versatility
If dynamic metadata is introduced to track shooting conditions, then adaptability improves, but device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the metadata structure into distinct, organized components. Each metadata entry is associated with specific time codes and contains particular parameters (orientation, brightness, GPS, etc.). This segmented structure allows the system to manage complex metadata efficiently by processing only relevant segments during playback based on the playback time and conditions.
Solution Approach 2:
The patent implements universality by creating a metadata structure that serves multiple functions simultaneously. The same metadata framework supports various types of shooting conditions (orientation, environmental brightness, GPS location, audio levels) and can be applied to different multimedia formats (video, photos, audio recordings). This multi-functional approach reduces overall system complexity by using a single unified structure rather than separate systems for each function.
3Measurement precision
If metadata is updated continuously during recording, then reproduction accuracy improves, but data processing time increases
Solution Approach 1:
The patent applies periodic action by updating metadata at specific intervals or at key moments during recording rather than continuously. The system captures metadata at defined time codes throughout the multimedia recording, allowing for accurate representation of changing conditions while avoiding the processing overhead of continuous updates. During playback, the system retrieves and applies the appropriate pre-captured metadata entries based on the playback time.
Data Source
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AI summary
Described herein are processes ( and related devices) for capturing and/or reproducing multimedia contents, comprising, in the capturing stage, the steps of: acquiring a multimedia content in the form of a generally time-variable multimedia stream through video acquisition means and possibly also audio acquisition means; acquiring data related to the capturing conditions of the multimedia content (capture parameters) through dynamic monitoring means for monitoring said conditions: storing values dependent on said generally time-variable capture parameters into predetermined areas of the multimedia file associated with the captured multimedia content in the form of dynamic metadata for acquiring the multimedia content; and/or comprising, in the reproduction stage, the steps of: reading from a memory at least said multimedia file comprising at least one multimedia content: reading data related to the capturing conditions of the multimedia content (capture parameters) in the form of at least one dynamic metadatum associated with the multimedia content of the multimedia file, and dynamically modifying the modes of reproduction of the multimedia stream corresponding to the multimedia file according to the values of at least said dynamic metadatum associated with the multimedia content.