Non-Temporal Video Encoding for Direct Editing
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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 editing and sharing.
Innovation Solution
A video recording device that captures and stores digital video in a non-temporally compressed format, allowing for direct transfer and editing without 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 size, then file size is reduced, but transcoding time and computation intensity increase significantly
Solution Approach 1:
The patent applies preliminary action by performing all necessary compression and encoding operations during the video recording process itself. The video camera encodes video using intraframe compression and stores it in a format ready for direct editing, eliminating the need for subsequent transcoding operations when the video is transferred to a computer for editing.
2Quantity of substance
If temporal compression is used to reduce file size, then file size is reduced, but video editing complexity increases due to P and B frames
Solution Approach 1:
The patent applies homogeneity by using only intraframe encoded video pictures throughout the video sequence. Each frame is encoded independently without reference to other frames, creating a uniform structure that is much simpler to edit compared to temporally compressed video with P and B frames that require complex reference and prediction operations.
3Speed
If non-temporally compressed format is used, then transfer speed increases, but file size increases significantly
Solution Approach 1:
The patent applies parameter changes by modifying the compression approach from temporal to spatial only. It uses intraframe compression with optimized block transformation and quantization parameters to achieve efficient compression without temporal references, enabling fast transfer speeds while keeping file sizes manageable for editing purposes.
Data Source
AI summary
Some embodiments provide a video recording device for capturing a video clip. The video recording device receives a selection of a non-temporally compressed encoding scheme from several different encoding schemes for encoding the video clip. The different encoding schemes include at least one temporally compressed encoding scheme and at least the selected non-temporally compressed encoding scheme. The video recording device captures the video clip as several frames. The video recording device non-temporally encodes each of the frames as several slices. The slices of a particular frame are for decoding by several processing units of a video decoding device. The video recording device stores the video clip in a storage.