Video Camera Non-Temporal Compression Editing Workflow
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Solution Overview
Problem
Digital video recorders compress video using temporal compression, leading to large file sizes and time-consuming transcoding processes when transferring video to computers, making it inefficient for users to edit and share videos.
Innovation Solution
A video recording device that captures and stores digital video in a non-temporally compressed format, allowing for quick transfer and editing without the need for transcoding, with options for both temporally compressed and non-temporally compressed formats using the same encoding standard.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If temporal compression is used to reduce file sizes, then storage efficiency is improved, but transcoding time and processing complexity increase significantly
Solution Approach 1:
The patent applies preliminary action by pre-processing video footage during recording to create a simplified proxy file structure. The camera records video in a format that is already optimized for editing (using I-frames only or reduced temporal compression), so that when the video is transferred to a computer, it requires minimal or no transcoding. This preliminary preparation during recording eliminates the need for time-consuming transcoding operations later.
Solution Approach 2:
The patent changes the encoding parameters by offering users a choice between different recording modes: one with temporal compression (P-frames and B-frames) for smaller file sizes, and another with reduced or no temporal compression (I-frames only) for faster editing. By changing the frame encoding parameters based on user needs, the system optimizes the balance between file size and processing speed.
2Quantity of substance
If temporal compression with P-frames and B-frames is used, then storage efficiency is improved, but editing complexity and transcoding requirements increase
Solution Approach 1:
The system performs preliminary action by recording video in a format that is pre-prepared for editing operations. By using I-frames only or reduced temporal compression during recording, the video is already in an editable state when transferred to the computer, eliminating the need for complex transcoding operations that would otherwise be required to make P-frames and B-frames editable.
3Quantity of substance
If high compression ratios are used to reduce file sizes, then storage efficiency is improved, but video quality may deteriorate
Solution Approach 1:
The patent applies parameter changes by allowing users to select between different recording modes with varying compression levels. Users can choose a mode with temporal compression for smaller file sizes or a mode with reduced compression (I-frames only) for better video quality and faster editing. This flexibility in encoding parameters enables users to optimize the balance between file size and video quality based on their specific needs.
Data Source
AI summary
Some embodiments provide a video camera. The video camera includes image sensing circuitry for capturing a sequence of video pictures, a user interface for allowing a user to select a video encoding format from a temporally compressed encoding format and non-temporally compressed encoding format, encoding circuitry for encoding the video pictures according to the format selected by the user, and random access storage for storing video clips.Some embodiments provide a video editing application for a computer. The application includes a first module for (i) receiving video clips stored on the video camera and (ii) storing a first set of video clips that are non-temporally compressed on the video camera in a storage of the computer, and a second module for (i) transcoding a second set of video clips that are temporally compressed on the video camera and (ii) storing the transcoded second set of video clips in the storage.