Reverse Video Playback Frame Processing
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Solution Overview
Problem
Users face frustration when manually navigating video files to play them in reverse on data processing devices, as the process is not smooth and requires human finesse, making it inefficient for tasks like analyzing time-specific events.
Innovation Solution
A method and system for reverse video playback on data processing devices, where the processor reads and decodes frames in reverse chronological order within a desired timeframe, allowing for smooth reverse playback initiation through an interface, using a driver component and multimedia framework to render frames correctly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual slider navigation is used to play video in reverse, then the user can access specific time points, but the operation becomes complex and requires human finesse
Solution Approach 1:
The patent implements reverse video playback by inverting the normal playback direction. The system reads and decodes video frames in reverse chronological order, allowing the video to play backwards automatically without requiring manual slider manipulation. This inversion principle directly resolves the contradiction by making reverse playback as easy as forward playback.
Solution Approach 2:
The system enables self-service reverse playback by automatically handling the complex tasks of reading frames in reverse order, decoding, and rendering. Once the user initiates reverse playback through a simple interface command, the system autonomously manages all subsequent processing steps without requiring continuous user intervention or finesse.
2Productivity
If manual slider navigation is used, then the user can control playback position, but the process is not smooth and requires unnecessary human finesse
Solution Approach 1:
By inverting the playback direction at the system level rather than requiring manual frame-by-frame manipulation, the patent achieves smooth reverse playback. The automatic reverse playback mechanism eliminates the jerky, imprecise motion associated with manual slider control, directly improving both productivity and ease of operation.
Solution Approach 2:
The patent replaces the mechanical slider manipulation process with an automated software-based reverse playback system. Instead of relying on physical or graphical interface manipulation, the system uses programmatic control to read and decode frames in reverse order, providing smooth playback controlled by simple interface commands rather than manual dragging.
3Ease of operation
If frames are read in reverse chronological order, then smooth reverse playback is achieved, but processing complexity increases
Solution Approach 1:
The system implements self-service frame processing by automatically managing the complex tasks of reading frames in reverse chronological order, decoding, and rendering. The multimedia framework and driver component work autonomously to handle the reversed processing pipeline without requiring user intervention, absorbing the processing complexity while maintaining smooth playback.
Solution Approach 2:
The patent leverages the existing multimedia framework and driver component to handle reverse playback processing, making the system multi-functional. These components are designed to handle various video processing tasks, and by extending their functionality to support reverse chronological frame reading and decoding, the system manages processing complexity through existing versatile infrastructure rather than requiring entirely new specialized components.
Data Source
AI summary
A method includes initiating, through an interface of a data processing device, reverse playback of a video file stored in a memory of the data processing device. The method also includes causing, through a set of instructions associated with a processor of the data processing device communicatively coupled to the memory and/or an operating system executing on the data processing device, the processor to read frames corresponding to the video file in a reverse chronological order within a desired timeframe following the initiation of the reverse playback. Further, the method includes decoding, through the processor, each frame corresponding to the reverse chronological order for rendering thereof on the data processing device.