Video-audio frequency editing method using digitized movable recording media

Abstract

The present invention relates to an audio / video editing method and an equipment by using mobile data recording medium. In the production of audio / video programs, a kind of mobile data recording medium that can be drawn and inserted is adopted as the carrier of video program data and used for the whole flows of photographing, recording, playing and storing; the equipment is composed of a kind of mobile data recording medium and a main set system, and the equipment carries the storage in a non-contact magnetic read-write way or through the electronic read-write method of a kind of conductor storage medium. The data files are recorded in a non-linear way to receive read-write operations of the operating system; the main set system is a computer system based on a CPU and an operating system platform or an embedded micro-processor system. The mobile data recording medium connects with the main set system through computer ports and a physical plug mechanism as well as electric signals; and carries pulling and insertion of the mobile data recording medium. The mobile recording medium keeps the independency and the integrality of data in the whole flow of the program production.

Description

technical field [0001] The present invention relates to a video and audio data editing method and equipment for program production, in particular to a video and audio non-linear editing method and equipment using a data-based mobile recording medium as a data carrier. The data-based mobile recording medium used is a pluggable It is a data-based mobile recording medium that can be pulled out and moved. In the entire process of program production, the video and audio data remain intact during the movement, and can give full play to the advantages of nonlinear editing. Background technique [0002] The editing of video and audio programs has experienced the development process from manual editing of tapes to linear electronic editing and nonlinear editing based on tapes. Manual editing of tapes is the so-called mechanical editing. During editing, people use a magnifying glass to locate the tracks on the tape, then use a slicer to cut on the tracks that mark the boundaries of th...

AI Technical Summary

Problems solved by technology

[0011] The linear editing system uses magnetic tape as the recording carrier, and the program signals are linearly arranged according to the physical position of the magnetic tape according to the time sequence. When searching for material, the video recorder needs to search the reel, and can only follow the sequence of shots on the one-dimensional time axis. The search can not be performed by jumping, so the selection of materials is time-consuming, which affects the editing efficiency

In addition, a large number of search operations will also wear a lot on the mechanical servo system and magnetic head of the video recorder.

[0012] (2) It is difficult to modify the program

[0014] (3) Signal replication is seriously degraded

If the material tape is used to re-edit, the workload is too large

[0016] (4) The video recorder is severely worn and the tape is easily damaged

[0017] To edit a TV film of tens of minutes, hundreds or even thousands of shots need to be selected, and the VCR searches back and forth for repeated editing, which causes serious mechanical wear and tear on the VCR, high operating intensity, shortened service life, and high maintenance costs.

In addition, the shortcomings of recording tapes are constantly exposed, such as stretching, distortion, brittleness, demagnetization, and scratches, which will affect the quality of the tape.

[0018] (5) The system is complex and the reliability is relatively low

[0019] The linear editing system has complex connections, including video lines, audio lines, control lines, and synchronization reference (black field) lines. The respective systems are complex in composition, relatively low in reliability, and often mismatched

In addition, there are many types of equipment. Video recorders are used as video recorders / players to work together with editing desks, special effects desks, time base correctors, subtitle machines, mixers and other equipment. Since these equipments each play a specific role, the performance of various equipment Uneven, with different indicators, when they are connected together, they will cause greater attenuation to the video signal

In addition, a large number of equipments are used at the same time, so that there are many operators and the operation process is complicated.

[0020] (6) Barriers to media format specificity

[0029] The current digital non-linear editing also has its disadvantages. It is just an isolated island of program production in the entire TV program production process. When the camera shoots, it can only be recorded on the tape. When using non-linear editing, the tape must also be The program is played through a video recorder, and the non-linear editing can only start when it is collected by the nonlinear editing system into the computer hard disk, and the edited program must also be recorded on the tape through the video recorder, because its storage medium is fixed in the computer system. The hard disk is a part of the equipment, and it cannot constitute the entire technological process of shooting, recording, editing, broadcasting, and storage of TV program production like removable tape media.

The non-linear editing system must upload and download the tape with the video tape recorder to enter the entire TV program production process of shooting, recording, editing, broadcasting, and storage, so the efficiency of the entire process has dropped instead.

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