Video Frame Identification via Reference Markers in Transport Streams
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Solution Overview
Problem
Existing frame-based transmission protocols, such as MPEG, face challenges in accurately identifying video frames and synchronizing event timing, which is crucial for applications like dynamic advertisement insertion and interactive media processing.
Innovation Solution
A method is introduced to identify video frames within MPEG transport streams by associating them with reference markers, generating unique signatures from header data, and using these signatures to determine advertisement avails and frame locations, allowing for precise scheduling and synchronization of operations like dynamic ad insertion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional frame-based transmission protocols are used, then transport of video frames is supported, but accurate frame identification and event timing synchronization are difficult to achieve
Solution Approach 1:
The patent introduces an intermediary synchronization mechanism that uses reference markers with signatures inserted at specific frame locations in the transport stream. These reference markers act as mediators between the transport stream and the processing devices, enabling accurate frame identification and timing synchronization without requiring complex device-level synchronization logic. The reference markers carry timing information that facilitates precise event timing relative to video frames.
2Adaptability or versatility
If frame identification is tightly coupled with transport stream and operating system, then protocol-specific identification is achieved, but flexibility and portability across devices are reduced
Solution Approach 1:
The patent extracts frame identification from protocol-specific implementations and consolidates it into a universal reference marker mechanism embedded in the transport stream itself. By taking out the identification logic from device-specific implementations and placing it in the stream as reference markers with signatures, the system achieves both reliability (through consistent stream-based identification) and flexibility (through platform-independent reference markers that work across different devices and operating systems).
Data Source
AI summary
An unbound, out-of-band identification concept for identifying video frames and/or other data sets within a transport stream. The identification may include the use of reference markers to identify the video frames independently of a transmission protocol used to facilitate the transport stream. This type of ubiquitous generation of reference markings may allow the reference markers to be easily propagated and used with disparate transmission protocols and transport streams.