Event Data Recreation for Low-Latency Content Output
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Solution Overview
Problem
In systems sending data to electronic devices, maintaining low latency can result in issues such as incomplete frame reception, decoding failures, and rendering issues, particularly in applications like network games, where retransmitting encoded data is not feasible.
Innovation Solution
The system generates and stores event data representing events related to data processing and transmission, allowing for the recreation of content by processing and rendering data similarly to the electronic device, using event data to determine which frames were received, decoded, and rendered, and synchronizing processing and rendering times.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the system maintains low latency when sending encoded data to the electronic device, then the responsiveness and real-time performance of the network application is improved, but the electronic device may not receive all frames, may not decode all received frames, and may not render all decoded frames
Solution Approach 1:
The system performs preliminary actions by generating event data that records all processing events (frame reception, decoding, rendering) before they actually occur during low-latency transmission. This event data serves as a pre-prepared reference that allows the system to later recreate the exact playback experience without needing to retransmit data, thus maintaining both low latency and complete frame accounting.
Solution Approach 2:
The system creates a copy of the playback experience by using event data to recreate content output at the electronic device. Instead of relying on the actual frames being transmitted and rendered in real-time, the system generates event data that captures all processing events and uses this data to recreate the content, ensuring complete and accurate reproduction of the playback experience without compromising low-latency transmission.
2Productivity
If the system does not retransmit encoded data to maintain low latency, then real-time performance is improved, but the electronic device experiences incomplete frame reception and decoding failures
Solution Approach 1:
The system introduces event data as an intermediary that bridges the gap between transmitted encoded data and the expected playback output. The event data records all processing events (which frames were received, decoded, and rendered) and serves as a mediator that allows the system to recreate the complete playback experience without needing to retransmit the actual frame data, thus maintaining transmission efficiency while preventing information loss.
3Loss of time
If the electronic device processes and renders frames in real-time without retransmission, then latency is reduced, but debugging and reproduction of playback issues become difficult
Solution Approach 1:
The system implements feedback by generating event data that records all processing events at the electronic device (frame reception timestamps, decoding events, rendering events). This event data provides complete feedback information about what actually occurred during playback, enabling developers to detect and measure playback issues accurately while maintaining low-latency real-time processing.
Solution Approach 2:
The system performs preliminary action by capturing and storing event data during the actual low-latency playback process. This event data is prepared in advance and contains all necessary information about frame processing, allowing for later analysis and debugging without needing to slow down or retransmit data, thus maintaining low latency while improving issue detectability.
Data Source
AI summary
This disclosure describes, in part, methods and techniques for recreating the outputting of content by an electronic device. For instance, system(s) may process (e.g., encode) first source data in order to generate second source data. The system(s) may then store the second source data in one or more databases and send a copy of the second source data to the electronic device. The electronic device may process (e.g., decode) the second source data in order to output content represented by the second source data. The electronic device may also generate event data representing events that occurred while processing the second source data. The system(s) may receive the event data from the electronic device and use the event data to process the second source data similar to the electronic device. This way, the system(s) are able to output the content similarly to how the electronic device output the content.