KR100349403B1 - Video screen editor - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video editing apparatus, and in particular, a video composed of a video input unit (1), a hardware (H / W) codec unit (2), a storage unit (3), an editing unit (4), and a video output unit (5). In the editing apparatus, the storage unit 3 comprises an input scene change search unit 31 and a data storage unit 32, and the editing unit 4 comprises a timeline editing unit 41, an effect unit 42, The trim editor 43 includes a software (S / W) codec unit 431, an extension unit 432 around an edit point, an automatic scene change unit 433, and an edit point trim. Composed of the section 434 by showing the cut point, that is, the screen before and after the cut point, the operator can grasp the flow of the content at a glance and quickly find the desired edit point, It automatically detects the transition location and sees it as an expected edit point before entering the edit, allowing you to There may be less of a hassle to find the location, it was so quick editing can be very easy to use programs such as news production required.

Description

Video editing device {Video screen editor}

The present invention relates to a video editing apparatus, and more particularly, it is possible to find the desired edit point accurately and quickly through the spreading method around the expected edit point, especially when it is necessary to finely adjust the cut point. It was invented to make editing faster because the automatic selection of scene transitions recommended candidate edit point candidates, which can greatly improve work speed and efficiency.

In general, video editing refers to a process of making a story by extracting only desired scenes from a number of scenes taken with a camera. In the past, video editing is usually performed by storing video data as a video clip from a camera or a VCR. As it adopts the method of finding the part that contains the desired contents while moving the position one by one, there is a problem that it takes a lot of work time, and there were many difficulties in precisely editing frame by frame.

Accordingly, in recent video editing apparatuses, methods for trim editing that require fine adjustment of edit points have been proposed.

However, in most of these methods, it is easy for the operator to lose the continuity of the content by showing only the left and right of the boundary, that is, the last screen of the front video clip and the first screen of the back video clip. There is an inconvenience to look for.

Accordingly, the present invention has been made to solve the above-mentioned conventional problems, and it is easy for the operator to lose the continuity of the contents by showing only the left and right screens of the trimming point, and the desired edit point is provided. On the contrary, the present invention unfolds several screens on the left and right of the boundary point to provide a video editing apparatus that allows the operator to grasp the flow of content at a glance and find the desired edit point more quickly. There is a main purpose.

According to another object of the present invention, in order to find a desired edit point in the existing video editing method, it is necessary to find the scene displayed on the screen by moving the position, and most of the edit points are often transition positions. Focuses on this, it automatically detects scene transitions and presents the edit point candidates to the operator, so that the worker does not have to navigate to the scene transition position, thereby speeding up work efficiency and speed. It is to provide a video editing device.

The object of the present invention described above is a video input unit for processing a video input from a camera or a VCR; A hard / ware (H / W) codec unit for compressing the video data into Motion-JPEG; A storage unit for storing the compressed video data as a video clip; An editing unit capable of performing desired video editing and adding effects using the stored video clips; It consists of a video output unit that outputs the edited output as a video,

The editing unit includes a timeline editing unit which processes an editing function in a timeline which becomes a main work space of editing; An effect unit which is responsible for processing a transition effect that can be placed between the video clip being edited or a two-dimensional or three-dimensional effect that can be given over an entire video clip; A video editing apparatus comprising a trim editing unit for more precisely editing a video edited on a timeline,

The trim editing unit includes an S / W codec unit for reading and restoring compressed video data from a storage unit for trim editing even during a timeline editing operation using the H / W codec unit; An unfolding part around an edit point that makes it easy for a worker to find a desired edit point by unfolding 40 frames around a position captured by an edit point in a timeline; A scene change automatic search unit for automatically searching for a scene change position and recommending an expected edit point; It is possible to achieve this by configuring an edit point trimmer which applies an edit point determined through an unfolding part around an edit point and an automatic scene change search unit to be applied to timeline editing.

Therefore, the editing speed can be greatly improved compared to the existing method.

1 is an overall block diagram of an apparatus of the present invention

2 is a detailed block diagram of a device of the present invention;

3 is an exemplary view of a screen displayed on a monitor by a trimming technique of an editing unit of the present invention device;

4 is an exemplary view of a screen displayed on a monitor by automatic scene change detection in the trimming technique of the editing unit of the present invention;

Explanation of symbols on main parts of drawing

1: Video input part 2: H / W codec part

3: storage unit 4: editing unit

5: Video output unit 41: Timeline editing unit

42: effect section 43: trim editor

431: S / W codec unit 432: Spread around the edit point

431: Automatic scene change detection unit 432: Edit point trimming unit

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail.

1 is a block diagram showing the overall block diagram of the device of the present invention, FIG. 2 is a block diagram showing the detailed block diagram of the device of the present invention, and FIG. 3 is an example of a screen displayed on a monitor by a trimming technique of an editing unit of the device of the present invention. 4 is a diagram illustrating an example of a screen displayed on a monitor by automatic scene change detection in a trimming technique of an editing unit of the present invention.

According to this, there is provided a video input unit 1 for processing video input from a camera or a VCR; A hardware (H / W) codec unit 2 for compressing this video data into Motion-JPEG; A storage unit 3 for storing the compressed video data as a video clip; An editing unit 4 capable of performing desired video editing and adding effects using the stored video clips; The editing unit comprises a video output unit 5 for outputting the edited result as a video, wherein the editing unit 4 is a timeline editing unit 41 for processing an editing function in a timeline which becomes a main work space of editing. )Wow; An effect unit 42 that is responsible for processing transition effects that can be placed between the video clip being edited or two-dimensional or three-dimensional effects that can be given over one video clip; In the video editing apparatus composed of a trim editing unit 43 for more precisely editing the video edited on the timeline,

The trim editing unit 43 is software for reading and restoring compressed video data from the storage unit 3 for trim editing even during a timeline editing operation using the H / W codec unit 2. (S / W) codec unit 431; An unfolding unit 432 surrounding an edit point for unfolding scenes of 40 frames around a position captured by a cut point in a timeline so that an operator can easily find a desired edit point; A scene change automatic search unit 433 for automatically searching for a scene change position and recommending an expected edit point; The edit point trimmer 432 and the edit point trimming unit 434 which are applied through the edit point spreader 432 and the scene change automatic search unit 433 are applied to the timeline editing.

Referring to the operation and effect of the device of the present invention configured as described above in detail.

First, an analog video signal input from a camera or a VCR is converted into a digital signal through a video input unit 1 having an A / D converter, and then transferred to a H / W codec unit 2. The codec unit 2 compresses the digital video data received through the video input unit 1 through the Motion-JPEG method at the video compression rate selected by the operator, and sends the digital video data to the storage unit 3 for storage. Is done in real time.

The reason for compressing and storing the digital video data in the storage unit 3 is that, in the case of the NTSC screen, the size of one scene is close to 1 MByte, but if it is stored for about 1 hour without compression, 72 GByte This is because compressing and storing it is a way to reduce costs because it requires a hard disk space. Experts say that even 8x compression is about BetacamSP, so even if you compress it to some extent, it's the same as broadcast quality.

The video data thus stored is viewed in the editing unit 4 as one video file and is called a source clip.

Since the video files stored in the storage unit 3 are compressed, they are always decompressed by the Motion-JPEG method via the H / W codec unit 2 and then transferred to the editing unit 4 to work in the editing unit 4.

Next, the operator selects the desired clip from the existing saved source clips, retrieves it, extracts only the desired part, and places it on the timeline that becomes the workspace for editing using various editing functions such as inserting and overwriting. The source clip placed on this timeline is called a segment.

After the initial editing is performed by the above operation, the segments can be reconfigured to the desired result by using various editing functions such as moving, copying, cutting, and lifting while searching directly on the timeline. All operations are processed in the timeline editing section 41 in the editing section 4.

In addition, a scene transition is usually performed between segments, and the scene can be naturally changed by inserting a transition effect by the effect unit 42 in the editing unit 4, and the effect is applied to the entire length of one segment. You can also make a variety of colorful images.

In this process, in order to perform fine editing that the timeline editing function does not provide, the trim editing unit 43 provides a fine editing point adjustment function.

When the editing is completed in this way, it is sent to the video output unit 5 to output the video for transmission.

The data handled in the editing process is not processed with the actual video data, but only with the index of each scene in the stored video file, so no matter how many edits are made, this does not require much hard disk space.

The trim editing section 43 in the editing section 4 allows the operator to finely adjust the edit point.

In order to perform the trim editing, the uncompressed original image is required, and the H / W codec unit 2 is already used in timeline editing, so that the S / W codec unit 431 in the trim editing unit 43 The video data stored in the storage unit 3 in the compressed state is processed by S / W for decompression by the Motion-JPEG method.

The purpose of trim editing here is to provide a means of fine-tuning the edit point, so in most cases the new edit point candidate is near the edit point edited on the timeline.

In timeline editing mode, when you enter trim editing mode from the last scene of the previous clip, this location points to the specific location in the source clip to which the clip originally belonged.

It displays the 10 front screens and 10 back screens around this position, and the same processing is performed around the first screen of the back clip on the timeline.

In other words, the first screen of the back clip points to the specific location of the source clip to which it belongs.

Then, 10 front screens and 10 rear screens are unfolded based on this position. The above processing result is as shown in FIG. 3, and an unfolding part 432 around the edit point in the trim editing unit 43 is shown. ) Will provide the same functionality as above.

On the other hand, the playback order of the video screens shown on the actual timeline is shown in order from the top left, the big screen in the middle on the left, the last screen of the front clip, and the big screen in the middle on the right, back After the first screen of the clip is shown, the screens on the bottom right are shown in order.

In this way, while finding the flow of video content, finding a new edit point, and double-clicking this screen with the mouse moves the edit point of the clip placed on the timeline accordingly. The editing point trimming unit 434 in the trim editing unit 43 is responsible for the overall operation.

In addition, the scene change automatic search unit 433 in the trim editing unit 43 automatically searches for a position where the scene is changed by a predetermined criterion in the selected source clip and shows the expected edit point to the operator. It is shown.

In order to reduce the processing time, the scene change automatic search unit 433 extracts the original image from the storage unit 3 to a size of 90 X 60, and applies a scene change algorithm to these data to determine the position where the scene change occurs. Search automatically.

The processing time is 0.4 times the real time, and also can be processed as a background task, so it does not put much time on the worker. And once the result is saved, it can be used again later.

In most cases, the edit point is often a transition point, so you do not need to search for it, so you can start editing from the transition point and work more comfortably. The edited result is edited in the trim editor 43. The point trimming unit 434 is applied to timeline editing, which is a function of the timeline editing unit 41.

As described above, according to the device of the present invention, by unfolding the cut point, that is, several screens before and after the boundary point, the operator can grasp the flow of contents at a glance and quickly find the desired edit point. By automatically searching for cutaway locations and showing them as expected edit points, the operator can save time and effort to find cutaway locations, which makes them very convenient for creating programs such as news that require quick editing. There is an effect such as.

Claims (4)

A video input unit 1 for processing video input from a camera or a VCR; A hardware (H / W) codec unit 2 for compressing this video data into Motion-JPEG; A storage unit 3 for storing the compressed video data as a video clip; The timeline editor 41, which handles editing functions in the timeline, which is the main workspace for editing, and transition effects that can be placed between the video clip being edited, or two-dimensions that can be applied to an entire video clip. Effects section 42 for processing the three-dimensional effect and a trim editing section 43 for more precisely editing the edited video on the timeline, and using the stored video clips to perform the desired video editing and insert effects An editing unit 4 which can be used; In the video editing apparatus comprising a video output unit (5) for outputting the result edited by the editing unit as a video, The trim editing unit 43 includes a spreading unit 432 around the edit point for unfolding scenes around a position captured by a cut point in the timeline so that an operator can easily find a desired edit point. Video editing device. delete The video editing apparatus according to claim 1, wherein the trim editing unit (43) further comprises a scene switching automatic searching unit (433) for automatically searching for a scene change position in the selected video clip and recommending an expected edit point. 2. The trim editing unit (43) according to claim 1, wherein the trim editing unit (43) reads and restores the compressed video data from the storage unit (3) for trim editing even during a timeline editing operation using the H / W codec unit (2). A software (S / W) codec unit 431 for enabling a; A spreading unit 432 surrounding the edit point for unfolding scenes around a position captured by a cut point in a timeline so that an operator can easily find a desired edit point; A scene change automatic search unit 433 for automatically searching for a scene change position and recommending an expected edit point; And an edit point trimming unit (434) for applying the edit point determined by the spreading unit (432) and the scene change automatic search unit (433) around the edit point to timeline editing.