Photographing Device Frame Rate Adaptation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing video capture devices require additional encoding to change reproduction speed, limiting their compatibility with generic-purpose devices and restricting users' ability to view videos at varying speeds without specific device support.
Innovation Solution
A photographing device that captures a reproduction speed changing video by generating frames at different frame rates during recording, allowing for seamless playback at normal, slow, or fast motion without additional encoding, using a processor to determine and encode frame rates based on user input or predetermined configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If additional encoding is performed to enable reproduction speed change in generic-purpose devices, then reproduction speed flexibility is improved, but device complexity and processing overhead increase
Solution Approach 1:
The patent applies preliminary action by capturing video frames at multiple frame rates during the recording phase rather than performing speed conversion during playback. The processor captures normal-speed frames and slow-motion frames simultaneously, storing them with metadata indicating their intended reproduction speed. This preliminary preparation enables generic-purpose devices to play back at different speeds without requiring complex real-time encoding or frame rate conversion algorithms.
2Adaptability or versatility
If video is captured at multiple frame rates, then playback versatility is improved, but data storage requirements increase
Solution Approach 1:
The patent merges multiple frame rate streams into a single video file with embedded metadata. Instead of creating separate video files for normal and slow-motion playback, the processor combines both frame rate streams and stores them together with reproduction speed information. This unified structure reduces storage overhead compared to maintaining separate complete video files, while still enabling versatile playback options.
3Adaptability or versatility
If frame rate conversion is performed during playback, then compatibility with generic devices is improved, but processing time and quality loss increase
Solution Approach 1:
The patent performs the frame rate adaptation action during capture rather than during playback. By capturing frames at multiple frame rates upfront and tagging them with reproduction speed metadata, the system eliminates the need for time-consuming frame rate conversion algorithms during playback. Generic-purpose devices can directly use the pre-prepared frames without additional processing, saving both time and computational resources.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The present disclosure relates to an electronic device for capturing a reproduction speed changing video which is reproducible in all devices without additional encoding, and a control method thereof. The method of controlling an electronic device for capturing a video includes generating, at a first frame rate, a first frame group obtained by photographing a subject, receiving an input for changing a reproduction speed, and determining a second frame rate based on the changed reproduction speed. The method further includes generating, at the second frame rate, a second frame group obtained by photographing the subject, and generating a single video file by encoding the first frame group and the second frame group based on the first frame rate.