Editing System Buffering Video Data for Immediate Playback
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Solution Overview
Problem
The inefficiency in editing work due to the long time required to read and transfer high-resolution video/audio data from an AV server to an editing device, leading to delayed display and output of edited video and audio in on-air systems.
Innovation Solution
Implementing a high-capacity buffer, such as semiconductor memory, between the editing device and the AV server to store and process video/audio data, allowing for immediate playback and output based on an edit list, and using a second storage with faster accessibility to support editing operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If high-resolution video/audio data is read from AV server to editing device, then editing quality is improved, but data transfer time increases
Solution Approach 1:
The system automatically reads and stores required video/audio data from the AV server into the buffer during the edit list creation process, before the actual editing and playback operations. This preliminary data preparation eliminates the need to wait for data transfer during playback, resolving the contradiction between maintaining high editing quality and reducing data transfer time.
Solution Approach 2:
A buffer with large capacity is introduced as an intermediary storage device between the AV server and the editing device. The buffer temporarily holds high-resolution video/audio data, allowing the editing device to access data quickly without continuous reliance on the slower AV server, thus improving both editing quality and reducing access time.
2Speed
If buffer stores video/audio data during edit list creation, then playback speed is improved, but buffer capacity requirements increase
Solution Approach 1:
The system stores only the required video/audio data segments in the buffer that are needed for the current edit list and playback operations, rather than buffering entire video/audio files. This partial buffering approach enables fast playback speed while keeping the required buffer capacity within practical limits.
3Productivity
If editing device continues another device's edit list creation, then work efficiency is improved, but data availability in buffer decreases
Solution Approach 1:
The buffer is designed to automatically detect when an editing device is continuing another device's edit list creation work, and autonomously reads and stores the required video/audio data from the AV server without manual intervention. This self-service mechanism ensures data availability is maintained even during multi-device collaborative editing, resolving the contradiction between improved work efficiency and data availability reliability.
Data Source
AI summary
An editing system and a control method for improving efficiency of editing work. The editing system is provided with a server for storing the video data of edit material. A memory stores the video data read from the server, the memory having accessibility faster than the server. An editing terminal for reading, processing, and editing required video data from the memory based on an edit list stored in a selected file. When opening the selected file, the editing terminal makes the server read the video data required for creating the edited video based on the edit list being stored in the file and makes the memory store and keep the video data.