Non-linear editing system used in the analysis of TV teaching materials

Understanding and grasping the characteristics of the non-linear editing system is the basis for the compilation of TV teaching materials using the non-linear editing system. In actual application, we feel that this system mainly has the following prominent features:

1. The storage is convenient, and the editing efficiency is greatly improved. Since the system runs on a computer platform, the audio and video storage medium is changed from traditional tape storage to hard disk storage. This allows us to use a non-linear device for editing, from traditional tape recorder search to computer mouse drag search; the speed is fast and avoids the wear of the recorder head. In addition, images and sounds are stored in the hard disk in a file format on the computer, so the storage structure is also changed from sequential storage in the tape to linked list storage. Using the characteristics of computer random access, you only need to find the file corresponding to which piece of video material to call.

2. The production function is greatly enhanced. At present, the functions of a set of non-linear editing systems often integrate multiple functions such as recording, editing, special effects, and subtitles. Before the introduction of the non-linear editing system, the production of programs that required multiple versions of recordings could not be operated in an arbitrary timing mode on the premise of not using copying as much as possible. imagination.

3. The image quality is high. This is because the computer is digitally processed, and the video content can be copied as many times as you want without noise, and the distortion will not increase.

4. Facilitate the exchange of program content. If any computer can save *, TGA, * .BMP, * .FLC, * .JPG, * .WAV and other file formats, they can be recalled and used in the non-linear editing system.

5. Under normal circumstances, the life of the image disk is also significantly longer than the magnetic head.

6. The editing speed is fast, and the precision is high, and it can achieve ± 0 frames.

7. The non-linear editing system provides composite, S-VHS, YUV components, digital input and output interfaces, remote control of various recording and playback equipment through the control line, at the same time disposes of various video recorders, accepts control of the console, and is compatible with various video and audio Equipment etc.

Due to the above characteristics of the non-linear editing system, it can play a great role in the production of TV teaching materials, and can provide good conditions for the realization of the design ideas of our audio-visual workers.

Second, the application of non-linear editing system makes the TV picture lively

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