Variable Playback Rate Video Segmentation
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Solution Overview
Problem
Existing video playback mechanisms lack the ability to easily control playback rates to ensure important dialog or critical parts of video content are experienced correctly, especially when playing back video content at faster than normal speeds, and they do not efficiently adapt to fit within a limited available time for viewing.
Innovation Solution
A method and system that modify video content by generating variable playback rates for different portions of the video based on user preferences, content characterization, or crowd-sourced data, allowing for the removal or speeding up of certain sections like commercials and less critical scenes to fit within a specified time frame, while maintaining the integrity of important dialog and scenes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If video content is played back at a faster than normal rate (e.g., 2×), then the playback time is reduced, but the quality of experiencing important dialog or critical parts deteriorates
Solution Approach 1:
The video content is divided into multiple segments with different playback rates. Critical portions (e.g., dialog scenes) are identified and assigned a normal playback rate (1×), while non-critical portions (e.g., action sequences, commercials) are assigned faster playback rates (e.g., 2×). This segmentation allows the system to reduce overall playback time while preserving the quality of important content.
Solution Approach 2:
Different portions of the video content are assigned different playback rates based on their importance. Instead of applying a uniform playback rate to the entire video, the system applies local quality variations where critical scenes maintain normal quality (1× rate) and non-critical scenes accept faster playback (2× rate or higher), optimizing the balance between speed and experience quality.
2Device complexity
If a uniform playback rate is applied to the entire video, then the playback mechanism is simple, but the ability to adapt to limited available time and preserve critical content is reduced
Solution Approach 1:
The playback rate is made dynamic rather than static. The system automatically adjusts the playback rate for different portions of the video based on pre-defined criteria or user preferences, allowing the playback mechanism to adapt to various scenarios (e.g., different available time frames, different user priorities) without requiring complex manual configuration.
Solution Approach 2:
The video content is pre-analyzed and tagged with metadata indicating critical portions (e.g., scenes with dialog, important plot points) before playback. This preliminary action enables the playback system to automatically apply appropriate rates without real-time complex decision-making, maintaining simplicity while achieving adaptability.
3Loss of time
If the entire video is played at 2× speed to reduce playback time, then the available time constraint is satisfied, but critical content may be missed or poorly experienced
Solution Approach 1:
The video is segmented into critical and non-critical portions. Critical portions (containing important dialog or plot developments) are played back at normal speed (1×) to ensure complete information retention, while non-critical portions are played back at 2× or higher speeds. This segmentation ensures that no critical information is lost while still achieving significant time reduction overall.
Solution Approach 2:
The playback rate parameter is changed dynamically based on content importance. Instead of a fixed 2× rate throughout, the system varies the playback rate parameter (1× for critical content, 2× for non-critical content), optimizing both time efficiency and information retention by adjusting the parameter according to local content characteristics.
Data Source
AI summary
A method and system includes obtaining video content at a programmed processor. The programmed processor generates a playback rate for each of multiple portions of the video content based on a predetermined playback rate obtained by the processor for each of the multiple portions. The processor further modifies the multiple portions of the video content for playback, wherein each portion is modified in accordance with the generated playback rate which is variable for each of the portions. The modified multiple portions may be provided to a monitor device for playing the video content via in accordance with the generated playback rate for each portion of the video content.