KR19990055423A - Nonlinear Digital Video Editing Method Using Project Table - Google Patents

Abstract

The present invention relates to a nonlinear digital video editing method using a project table.

According to the present invention, the nonlinear digital video editing system does not use special hardware for image processing, and uses digital software data as a software-only method, and after editing and performing special effects on the video data without being decompressed. Again, the results will be generated according to the format.

Accordingly, the present invention proposes a method of managing video and transition effects and visual special filter data using a project table, and a method of generating a new digital video without decompressing video data using the project table.

Description

Nonlinear Digital Video Editing Method Using Project Table

The present invention relates to a nonlinear digital video editing method using a project table.

In general, the production method of video has been made by linear editing based on analog equipment. In this method, video films are sequentially searched to find the scenes to be edited, and the effects are synthesized in one scene. If you want to experiment with different alternatives for a scene, copy as many copies of the film as you need to create a composite of the effects, or prepare several sound tapes to play different effects while playing back a scene. Using methods to synchronize with the scenes of the scenes, the editing process required a lot of time and effort.

In recent years, this hassle has been greatly reduced as digital nonlinear editing systems have been used in video production. Nonlinear editing systems can access arbitrary portions of digital video data stored on computers and hard disks, create new video images through editing the data, synthesizing and switching between multiple video images, and visual special effects on the video images. Comprehensive management of a series of digital data storage processes. Each video image data, transition effect data, and visual effect data used in the editing process is called a clip. Is done.

Therefore, the present invention is to provide an effective data (clip) management function for each editing function provided by the nonlinear editing system, by importing the necessary video from the file and calculating transition effects and visual special effects only by referring to the project table when producing a video. The goal is to provide a nonlinear digital video editing method using project tables to facilitate the video production process.

In order to achieve the above object, the present invention provides a conversion table between digital video and editing functions such as cutting, pasting, copying, erasing, moving, separating, and resizing digital video data using a project table composed of a plurality of clips. It is characterized by performing a visual special effect.

1 shows a video project edited in a nonlinear digital video editing system.

FIG. 2 illustrates a video project modified in FIG. 1. FIG.

3 shows a video project modified in FIG.

4A to 4C show data information of a project table according to the present invention.

5 is a diagram illustrating a project table update process according to the type of an editing command.

6 is a diagram illustrating a Cut and Delete command process and a process of updating a project table.

7 is a diagram illustrating a paste command process and a project table update process;

8 is a diagram illustrating a move command process and a project table update process.

9 is a diagram showing a split command process and a project table update process;

10 is a diagram showing a resize command process and a project table update process.

11 is a diagram illustrating a process of producing a new digital video with information of a project table.

12 is a diagram showing clip area divisions in a project table.

Elements in the project table include Clip ID, Storage, Track Start, Track End, Source Start, Source End, Type, There are a Track Number and an Apply Clip, each of which plays a role as follows, and transition effects clips and filter clips are always null with source start and source end values. The Apply Clip is always null.

-Clip ID: Unique number of the clips in the table

Storage: A pointer to the file of the video clip.

Track Start: Shows where in the edit track the clip begins.

Track End: Shows where in the edit track the clip ends.

Source Start: In the case of a video clip, this indicates where in the actual file the part used for editing begins.

Source End: In the case of a video clip, it indicates in which part of the actual file the part used for editing ends.

-Type: Displays the classification of video clip, transition clip, and visual special clip.

Track Number: Indicates the number of the edit track where the clip is placed.

-Apply Clip: For transition effect clips and visual special effect clips, it stores the number of the video clip to which the effect is applied.

1 is a screen showing one video project being edited in a nonlinear digital video editing system. Two video clips are placed on the V1 and V2 tracks. The first clip of the V1 track is a pure digital video clip, and the third clip of the V2 track has a filter (here Blur). In addition, a transition effect clip (Dissolve here) is placed on the T.E track to perform the transition between clips 1 and 2.

Figure 2 is the result of removing the back of the third video clip in the video project of Figure 1 16 to 50 size video clip has been modified to 16 to 35 size.

3 is a result of deleting the first video clip in the video project of FIG.

FIG. 4A is a project table containing data information of the video project of FIG. 1.

FIG. 4B is a project table that contains data information of the video project of FIG. 2.

FIG. 4C is a project table that contains data information of the video project of FIG. 3.

Fig. 5A shows the type of editing command and Fig. 5B is a flowchart showing how the contents of the project table change according to the type of the editing command. The Copy command in Case 6 has no effect on the project table, and in Case 1, Case 2, and Case 3, the process is simple and only the process of adding the clip to the project table is required.

FIG. 6 is a flowchart of a project table management of Cut and Delete commands, in which all processes are the same except for whether or not to copy a selection clip to a clipboard. If the selection clip is a transition clip or a pure video clip with no filters and transitions applied, only the selection clip is deleted from the project table and no filter clips and transitions are applied. The filter clip is deleted together. The video clip to which the transition is applied must be modified together with the data of the transition applied with the deletion of the selection clip.

7 is a flowchart of a project table management according to a paste command, in which a clip stored in a clipboard adds data to a project table. A video clip to which a filter is applied is applied together with a clip of a clipboard. Should be added.

8 is a flowchart of a project table management according to a split command, which can be performed only on a video clip and not on a transition effect clip and a filter clip. The video clip that received the split command must make one video clip into two video clips, so you must modify the track end and source end data of the selected video clip and create another new video clip. In this case, if the filter is applied, the filter clip also needs to create a filter clip that is applied to the existing clip data and the modification of existing clip data. If a transition has been applied to the selected video clip, you must add the newly created video clip to the application clip for that transition clip.

9 is a flowchart of a project table management according to a Move command. As a result, the track position of a clip is changed as a result of the command, so that track start and track and data of a selected clip are modified, and the filter is applied to a video clip. The track position of the filter clip must also be modified. If there is a transition clip applied to the video clip being moved, the application clip data of the transition clip should be modified.

10 is a flowchart of a project table according to a resize command. Since the command adjusts the size of a clip, the track start, track end, source start, and source end data should change according to the contents of the command. The filter clip associated with the selected video clip must change as the video clip changes size.

11 shows a process of producing a video according to the contents of the clip area of the project table after the editing work is completed. In the order of the track start time, it is produced according to the type of the clip. In the case of a video clip, the video file is accessed with the storage information of the project table, the source start and the source and item are imported, and the part is imported. Write to file as it is. A filtered video clip takes the partial video in the same way, calculates the filter, and writes it to a new video file. The transition clip takes the corresponding parts of the two linked video files, converts them, and records them.

As described above, the present invention provides a nonlinear digital editing system that is still in a very small state of research and development in Korea, effectively manages clips in a video project during the editing process, and encodes a video file that is a material when producing a new video image. By eliminating the decoding / decoding process, it reduces the time required for this and minimizes the compression loss, thereby producing a clear video.

Claims (3)

Using a project table composed of multiple clips, editing functions such as cutting, pasting, copying, erasing, moving, separating, and resizing digital video data, and switching between digital video and visual special effects are performed. Nonlinear digital video editing method using project table. The method of claim 1, The project table is a unique number of the clips contained in the table, Storage that is a repository for video clip files, A track start indicating where in the edit track the clip begins, A track end indicating where in the edit track the clip ends, For video clips, the source start, which indicates where in the actual file the part used for editing begins, For video clips, the source end that indicates where in the actual file the part used for editing ends, A type that indicates the division between a video clip, transition clip, and visual annotation clip, A track number indicating the number of the edit track where the clip is placed, In the case of a transition effect clip and a visual special effect clip, a nonlinear digital video editing method using a project table comprising an application clip storing a number of a video clip to which an effect is applied. The method of claim 1, After you finish editing the video, import it into the video area in the order of the editing tracks and record the unfiltered video clip in a new video file, and the transition clip import the corresponding portion of the linked video file, calculate the transition, and then add the new video. Writing to a file, Filtered video clips take that part of the video file, filter it out, write it to a new video file, and transition effects clips take that part of the linked video file, make phone calls, and then write it to the new video file. Non-linear digital video editing method using a project table, characterized in that the addition of the video production process.