Video Recording Encoding Switch for Frame Rate Loss Reduction
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Solution Overview
Problem
Intelligent terminals experience an unreasonable loss of video frame rate during recording, leading to a low frame rate and poor viewing experience due to the use of default encoding formats like H264, which results in a significant frame rate loss from 30 fps to 10 fps.
Innovation Solution
A video recording method that determines the preview frame rate and selects an appropriate encoding format, such as MPEG-4, if supported, to reduce frame rate loss, using a higher encoding frame rate when the preview frame rate is higher than a preset threshold, and converts to a more efficient format like H264 for transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the default H264 encoding format is used for video recording, then the video can be transmitted efficiently, but the frame rate is significantly reduced from 30 fps to 10 fps
Solution Approach 1:
The patent implements dynamic encoding format selection based on the preview frame rate. When the preview frame rate is high (30 fps), the system dynamically switches to MPEG-4 encoding to preserve frame rate, and when the preview frame rate is low, it uses H264 encoding for efficient transmission. This dynamic adaptation resolves the contradiction by adjusting the encoding strategy according to real-time conditions.
Solution Approach 2:
The patent changes the encoding format parameter based on the preview frame rate threshold. By monitoring the preview frame rate and switching between MPEG-4 and H264 encoding formats, the system optimizes both frame rate preservation and transmission efficiency. This parameter change approach allows the system to achieve high frame rate when needed while maintaining transmission efficiency when appropriate.
2Manufacturing precision
If a higher encoding frame rate is used to match the preview frame rate, then the video quality and viewing experience are improved, but the transmission efficiency and storage requirements increase
Solution Approach 1:
The patent changes the encoding format parameter based on the preview frame rate threshold. By monitoring the preview frame rate and switching between MPEG-4 and H264 encoding formats, the system optimizes both frame rate preservation and transmission efficiency. This parameter change approach allows the system to achieve high frame rate when needed while maintaining transmission efficiency when appropriate.
Solution Approach 2:
The patent implements dynamic encoding format selection based on the preview frame rate. When the preview frame rate is high (30 fps), the system dynamically switches to MPEG-4 encoding to preserve frame rate, and when the preview frame rate is low, it uses H264 encoding for efficient transmission. This dynamic adaptation resolves the contradiction by adjusting the encoding strategy according to real-time conditions.
3Speed
If the encoding format is selected based on preview frame rate threshold, then the frame rate loss is reduced, but the device complexity increases due to format conversion requirements
Solution Approach 1:
The patent performs preliminary detection of the preview frame rate before selecting the encoding format. By detecting the frame rate in advance and selecting the appropriate encoding format (MPEG-4 for high frame rate, H264 for low frame rate), the system avoids complex real-time format conversions during recording. This preliminary action simplifies the overall process by making the encoding format selection proactive rather than reactive.
Data Source
AI summary
The present disclosure relates to a video recording method and apparatus, a device, a storage medium, and a program product. The method comprises: in the process of video recording, acquiring a video frame to be recorded, and previewing said video frame; then determining a preview frame rate in the preview process of said video frame; if the preview frame rate is a first frame rate, encoding said video frame in a first format to obtain encoded data, and if the preview frame rate is a second frame rate, encoding said video frame in a second format to obtain encoded data, wherein the encoding frame rate corresponding to the first format is greater than the encoding frame rate corresponding to the second format; and finally, generating a recorded video on the basis of the encoded data.