Time-Warped Playback for Recorded Computer Sessions
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Solution Overview
Problem
Conventional methods for playing back recorded computer sessions, such as those using remote presentation protocols, require sequential playback from the beginning and lack the ability to dynamically adjust playback speed based on content complexity, leading to inefficient review times and potential missed details.
Innovation Solution
A system that uses a background protocol engine to analyze the complexity of recorded sessions and generate a playback data structure, allowing for context-sensitive, automatically varied playback rates that match the user's comprehension rate, thereby enhancing the efficiency of reviewing recorded sessions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sequential playback from the beginning is used, then all content is reviewed, but review time is excessive
Solution Approach 1:
The system identifies and skips low-complexity time intervals in the recorded session by accelerating playback speed during these periods. The background protocol engine analyzes packets to determine complexity levels, and when low complexity is detected, the playback is accelerated to traverse these sections quickly while still maintaining visibility of the content, thus reducing overall review time without completely omitting any content.
2Loss of time
If playback speed is increased, then review time is reduced, but important details are missed
Solution Approach 1:
The playback speed is made dynamic rather than static. The system continuously analyzes the complexity of incoming packets and adjusts the playback speed accordingly in real-time. When complex content is detected, playback slows down to allow detailed review; when simple content is detected, playback accelerates to reduce overall review time. This dynamic adjustment ensures that important details are not missed while still achieving time reduction.
Solution Approach 2:
The system changes the playback speed parameter based on the complexity parameter of the recorded content. By monitoring packet complexity metrics and adjusting the playback speed parameter dynamically, the system optimizes the balance between review time and detail visibility, ensuring that high-complexity sections receive adequate attention while low-complexity sections are traversed efficiently.
3Ease of operation
If user-selected speed multiples are provided, then playback flexibility is improved, but user awareness of upcoming content is lost
Solution Approach 1:
The system performs automatic complexity analysis and speed adjustment without requiring user intervention. The background protocol engine autonomously analyzes packet complexity, determines appropriate playback speeds, and implements time-warping automatically. This self-service approach eliminates the need for users to manually adjust speed multiples while maintaining context awareness, as the system makes intelligent decisions based on content analysis.
4Loss of time
If snapshot frequency is reduced to increase traversal speed, then review time is reduced, but state information is lost
Solution Approach 1:
The background protocol engine performs preliminary analysis of packet complexity before playback occurs. By pre-processing the recorded session data and identifying complex versus simple time intervals in advance, the system can plan appropriate playback speeds for each section. This preliminary action ensures that state information is preserved in the analysis phase, and playback speed is optimized based on this pre-acquired knowledge rather than reducing snapshot frequency.
Data Source
AI summary
Methods and systems for generating playback instructions for time-warped playback of presentation layer protocol data. The method includes a protocol engine executing on a computing device recording a protocol data stream comprising a plurality of packets representing a user session. The protocol engine determines a complexity factor for a first portion of the protocol data stream and for a second portion of the protocol data stream based on content of the packets of the protocol data stream. The protocol engine determines a first playback rate for the first portion of the protocol data stream and a second playback rate for the second portion of the protocol data stream using the complexity factor of each portion of the protocol data stream, wherein the first playback rate differs from the second playback rate. The protocol engine renders the protocol data stream according to the determined playback rates.