CN112004136A - Method, device, equipment and storage medium for video clipping - Google Patents
Method, device, equipment and storage medium for video clipping Download PDFInfo
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- CN112004136A CN112004136A CN202010868660.7A CN202010868660A CN112004136A CN 112004136 A CN112004136 A CN 112004136A CN 202010868660 A CN202010868660 A CN 202010868660A CN 112004136 A CN112004136 A CN 112004136A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/47—End-user applications
- H04N21/472—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content
- H04N21/47202—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content for requesting content on demand, e.g. video on demand
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/431—Generation of visual interfaces for content selection or interaction; Content or additional data rendering
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/47—End-user applications
- H04N21/472—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content
- H04N21/47217—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content for controlling playback functions for recorded or on-demand content, e.g. using progress bars, mode or play-point indicators or bookmarks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/47—End-user applications
- H04N21/485—End-user interface for client configuration
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
- H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
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Abstract
The embodiment of the invention discloses a method, a device, equipment and a storage medium for video clipping. Wherein, the method comprises the following steps: generating a complete progress bar of the video set to be clipped according to the clipping thumbnail characteristics of each video in the video set to be clipped and transition controls between adjacent videos; configuring a corresponding cutting control for the sub progress bar pointed by the preview cursor under the rolling of the complete progress bar; and editing the video set to be edited based on the editing operation under the complete progress bar and the cutting control. The technical scheme provided by the embodiment of the invention is convenient for a user to execute the corresponding video clipping operation by utilizing the corresponding clipping control of each video and the transition control between the adjacent videos directly under the rolling of the complete progress bar, does not need to additionally and independently display the clipping control of each video, and does not need to specially search the transition control between the adjacent videos, thereby reducing the complexity of multi-video clipping operation under the video set to be clipped, and improving the convenience and the fluency of video clipping.
Description
Technical Field
The embodiment of the invention relates to the technical field of video processing, in particular to a method, a device, equipment and a storage medium for video editing.
Background
With the rapid development of short video applications, diversified video transmission becomes an important way for people to entertain, so how to conveniently and efficiently edit multiple videos becomes an important problem currently facing.
At present, in an existing video editing mode, complete progress bars generated when a plurality of videos are edited are directly and sequentially combined by the progress bars of each video of the current editing, as shown in fig. 1, a video preview picture at a corresponding progress is displayed by judging a sliding position of a preset cursor on the complete progress bar, at this time, when the video at the current sliding progress of the cursor is edited, a single editing slider under the video is additionally displayed to edit the video, and meanwhile, when a corresponding transition picture is edited between adjacent videos, a corresponding transition control needs to be specially searched for editing; at the moment, the separation of the progress bar and the clipping slider under the same video and the clipping of transition pictures between adjacent videos both increase the complexity of video clipping operation and greatly reduce the convenience and the fluency of video clipping.
Disclosure of Invention
The embodiment of the invention provides a video clipping method, a video clipping device, video clipping equipment and a storage medium, which can be used for reducing the complexity of video clipping operation and improving the convenience and the fluency of video clipping.
In a first aspect, an embodiment of the present invention provides a method for video clipping, where the method includes:
generating a complete progress bar of the video set to be clipped according to the clipping thumbnail characteristics of each video in the video set to be clipped and transition controls between adjacent videos, wherein the clipping thumbnail characteristics are thumbnail extraction rules referred to when each video is clipped;
configuring a corresponding cutting control for the sub progress bar pointed by the preview cursor under the rolling of the complete progress bar;
and clipping the video set to be clipped based on the complete progress bar and the clipping operation under the clipping control.
In a second aspect, an embodiment of the present invention provides an apparatus for video editing, including:
the progress bar generating module is used for generating a complete progress bar of the video set to be clipped according to the clip thumbnail characteristics of each video in the video set to be clipped and transition controls between adjacent videos, wherein the clip thumbnail characteristics are thumbnail extraction rules referred to when each video is clipped;
the cutting control configuration module is used for configuring a corresponding cutting control for the sub progress bar pointed by the preview cursor under the rolling of the complete progress bar;
and the video clipping module is used for clipping the video set to be clipped based on the complete progress bar and the clipping operation under the clipping control.
In a third aspect, an embodiment of the present invention provides an apparatus, where the apparatus includes:
one or more processors;
storage means for storing one or more programs;
when executed by the one or more processors, cause the one or more processors to implement a method of video clipping in accordance with any of the embodiments of the present invention.
In a fourth aspect, embodiments of the present invention provide a computer-readable storage medium, on which a computer program is stored, which when executed by a processor, implements a method for video editing as described in any of the embodiments of the present invention.
According to the method, the device, the equipment and the storage medium for clipping the video, a complete progress bar of a video set to be clipped is generated according to clipping thumbnail features of each video in the video set to be clipped and transition controls between adjacent videos, a sub-progress bar generated according to the corresponding clipping thumbnail features of each video exists in the complete progress bar, the transition controls are connected between the sub-progress bars of the adjacent videos, and meanwhile, under the condition that the complete progress bar rolls, the corresponding clipping controls can be directly configured for the sub-progress bar pointed by a preview cursor, so that the complete progress bar can visually provide the clipping controls for independently clipping each sub-progress bar of each video and the transition controls for setting transition pictures between the adjacent videos for a user, and the user can directly execute the corresponding view controls by using the clipping controls corresponding to each video and the transition controls between the adjacent videos under the condition that the complete progress bar rolls The method has the advantages that the video clipping operation is performed, additional clipping controls for each video do not need to be displayed independently, transition controls between adjacent videos do not need to be searched specially, complexity of multi-video clipping operation under a video set to be clipped is reduced, and convenience and smoothness of video clipping are improved.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments made with reference to the following drawings:
FIG. 1 is a schematic diagram of a multi-video clipping process in the prior art;
FIG. 2A is a flowchart of a method for editing video according to an embodiment of the present invention;
FIG. 2B is a schematic diagram of a video clipping process according to an embodiment of the present invention;
FIG. 3A is a flowchart of a method for editing video according to a second embodiment of the present invention;
fig. 3B is a schematic diagram illustrating a principle of determining a pointing object of a preview cursor under the complete progress bar scrolling in the method according to the second embodiment of the present invention;
FIG. 4A is a flowchart of a method for editing video according to a third embodiment of the present invention;
fig. 4B is a schematic diagram illustrating a principle that a target thumbnail corresponding to a newly added thumbnail area in a screen is dynamically requested under the complete progress bar scrolling in the method according to the third embodiment of the present invention;
FIG. 5A is a flowchart of a method for editing video according to a fourth embodiment of the present invention;
fig. 5B is a schematic diagram of a video clipping process according to a fourth embodiment of the present invention;
FIG. 6 is a schematic structural diagram of an apparatus for editing video according to a fifth embodiment of the present invention;
fig. 7 is a schematic structural diagram of an apparatus according to a sixth embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures. In addition, the embodiments and features of the embodiments in the present invention may be combined with each other without conflict.
Example one
Fig. 2A is a flowchart of a method for video editing according to an embodiment of the present invention, which can be applied to a case of performing a unified editing on multiple videos. The method for video clipping provided by this embodiment may be performed by an apparatus for video clipping provided by the embodiment of the present invention, which may be implemented by software and/or hardware, and is integrated in a device for performing the method, which may be a client configured with a video clipping application.
Specifically, referring to fig. 2A, the method may include the steps of:
s210, generating a complete progress bar of the video set to be clipped according to the clipping thumbnail characteristics of each video in the video set to be clipped and transition controls between adjacent videos.
Optionally, more and more users clip a plurality of videos to produce diversified videos to improve entertainment interactivity of the users, and the existing multi-video clipping mode usually clips each video separately and then directly connects the clipped videos in sequence, at this time, the users are required to continuously and alternately search the clipping control of each video and the transition control between adjacent videos, and complexity of multi-video clipping operation is increased, so that a convenient and efficient multi-video clipping mode needs to be provided in this embodiment to reduce complexity of multi-video clipping operation.
Specifically, when multiple videos are clipped, each video participating in the current clipping is determined according to a video clip adding operation of a user, so as to form a video set to be clipped in the embodiment, at this time, in order to facilitate adding of the video to be clipped, as shown in fig. 2B, a corresponding clipping video adding button is set in a video clipping interface, and the user selects the multiple videos clipped at this time by triggering the button.
Meanwhile, in order to facilitate the user to accurately clip each video, the embodiment requires that the thumbnail at the corresponding time can be displayed on the progress bar supporting the user to clip in each video, that is, the sub-progress bar of each video is required to be composed of a large number of thumbnails arranged according to the video sequence, so that the user can clip the video by referring to the video frames of the video at different times, as shown in fig. 2B; at this time, the clip thumbnail feature of each video in this embodiment may be a thumbnail extraction rule referred to when each video is clipped, that is, a thumbnail rule displayed in the sub-progress bar for representing the video, for example, a video frame at a corresponding time point is collected every preset time interval and used as a thumbnail at the current time interval, and then the collected multiple thumbnails are combined according to the collection time to generate the sub-progress bar of the video; that is to say, after each video in the video set to be edited is determined, the editing thumbnail characteristics of each video are analyzed first to determine the acquisition mode of each thumbnail in the sub-progress bar of the video, so that the corresponding video frames are acquired from the video according to the acquisition mode and serve as thumbnails at different acquisition time intervals, the thumbnails in each video are arranged according to the corresponding acquisition time sequence and then combined, and the size of the combined result is adjusted according to the size requirement of the sub-progress bar to obtain the sub-progress bar of each video.
At this time, because the picture scenes of the adjacent videos in the video set to be edited are different, when the adjacent videos are merged and edited, a corresponding transition special effect is usually added between the adjacent videos, for example, transition playing from the previous video to the next video is completed in an overlapping, flashing or gradual changing manner, so as to improve the convenience of setting the transition special effect between the adjacent videos, in this embodiment, after the sub-progress bar of each video is generated, as shown in fig. 2B, a preset transition control between the adjacent videos is also used to connect the sub-progress bar of the previous video and the sub-progress bar of the next video in each adjacent video in the video set to be edited, so as to generate the complete progress bar of the video set to be edited, that is, the complete progress bar is obtained by setting a corresponding transition control between the sub-progress bars of each adjacent video in the video set to be edited, the transition control is mainly used for setting a corresponding transition special effect between adjacent videos according to the triggering operation acted on the transition control by a user, so that the transition special effect is prevented from being set by specially searching the transition control between the adjacent videos, and the complexity of multi-video clipping operation under a video set to be clipped is reduced.
For example, in this embodiment, new videos may be added to a video set to be edited continuously to participate in the current multi-video editing, so that the complete progress bar of the video set to be edited needs to be updated once every time a new video is added, at this time, when a new current video is added to the video set to be edited, thumbnails in the current video are extracted according to the editing thumbnail features of the current video, and the thumbnails in the current video are combined to obtain a sub-progress bar of the current video; if the current video is the first video in the video set to be clipped, taking the sub progress bar of the current video as the complete progress bar of the video set to be clipped; if the current video is the non-first video in the video set to be clipped, connecting the sub progress bar of the current video to the rear end of the sub progress bar of the last video in the video set to be clipped through a transition control between adjacent videos to form a complete progress bar after the video set to be clipped is updated.
Specifically, when a new current video is added into a video set to be edited each time, the editing thumbnail features of the current video are directly analyzed, the thumbnail extraction mode of the current video is determined, then all thumbnails in the current video are extracted according to the thumbnail extraction mode, all thumbnails are combined according to the extraction time sequence to obtain a sub-progress bar of the current video, whether the current video is the first video in the video set to be edited is analyzed, if yes, the video set to be edited only comprises one current video currently is indicated, and therefore the sub-progress bar of the current video can be directly used as a complete progress bar of the video set to be edited; if not, the fact that other videos exist in the video set to be edited before the current video exists, and the sub-progress bars of the other videos are updated into the complete progress bar of the video set to be edited when the sub-progress bars of the other videos are added, therefore, a transition control between adjacent videos needs to be adopted, the sub-progress bar of the current video is directly connected to the sub-progress bar of the last video in the video set to be edited, and therefore when a new current video is continuously added in the video set to be edited, the newly added sub-progress bar of the current video is continuously connected behind the existing complete progress bar through the transition control between the adjacent videos, so that the complete progress bar of the video set to be edited is updated, and the accuracy of the complete progress bar of the video set to be edited is guaranteed.
And S220, configuring a corresponding cutting control for the sub progress bar pointed by the preview cursor under the rolling of the complete progress bar.
In this embodiment, in order to improve the editing effect of the multiple video clips, a video display window is usually set in the multiple video clip interface, and is used to display the video frames of the videos in the video set to be edited at the corresponding time, at this time, in order to accurately display the video frames at the corresponding time, a preview cursor is set in the center of the screen in advance, then, by scrolling the complete progress bar of the video set to be edited in the screen, the preview cursor can be pointed to different scrolling positions under the complete progress bar, and at this time, the video frames at the corresponding time at the scrolling position pointed by the preview cursor can be displayed in the video display window.
Specifically, in order to accurately clip a video corresponding to each sub-progress bar in a complete progress bar of a video set to be clipped, in the process of scrolling the complete progress bar, the preview cursor may continuously point to different sub-progress bars in the complete progress bar, and at this time, corresponding clipping controls may be configured for each sub-progress bar pointed by the preview cursor when the complete progress bar is scrolled, so as to instruct a user to currently execute a corresponding clipping operation on a video matched with the sub-progress bar pointed by the preview cursor through the clipping controls, for example, clipping a video matched with the sub-progress bar currently pointed by the preview cursor in a playing period, or setting a corresponding playing speed, and the like, so that the complete progress bar of the video set to be clipped may directly support a clipping operation and a transition special effect setting of each video, so that the user may directly use the clipping control corresponding to each video and a transition control between adjacent videos under the scrolling of the complete progress bar The corresponding video clipping operation is executed, the clipping control of each video does not need to be additionally and independently displayed, and the transition control between adjacent videos does not need to be specially searched, so that the complexity of the multi-video clipping operation under the video set to be clipped is reduced.
And S230, clipping the video set to be clipped based on the clipping operation under the complete progress bar and the clipping control.
Optionally, under the rolling of the complete progress bar of the video set to be clipped, a clipping control of each video and a transition control between every two adjacent videos can be continuously provided for a user, then each video in the video set to be clipped is clipped by detecting the clipping operation of the user acting on each transition control and the clipping control in real time, and meanwhile, a corresponding transition special effect is set between every two adjacent videos, so that the video set to be clipped is accurately clipped, and the convenience and the fluency of video clipping are improved.
According to the technical scheme provided by the embodiment, a complete progress bar of a video set to be clipped is generated according to the clipping and thumbnail characteristics of each video in the video set to be clipped and transition controls between adjacent videos, at the moment, a sub-progress bar generated by each video according to the corresponding clipping and thumbnail characteristics exists in the complete progress bar, and a transition control is connected between the sub-progress bars of the adjacent videos, and meanwhile, under the rolling of the complete progress bar, a corresponding clipping control can be directly configured for the sub-progress bar pointed by a preview cursor, so that the complete progress bar can visually provide a clipping control for independently clipping the sub-progress bar of each video and a transition control for setting a transition picture between the adjacent videos for a user, so that the user can directly execute corresponding video clipping operation by using the clipping control corresponding to each video and the transition control between the adjacent videos under the rolling of the complete progress bar, the method has the advantages that the cutting control of each video does not need to be additionally and independently displayed, and the transition control between adjacent videos does not need to be specially searched, so that the complexity of multi-video cutting operation under the video set to be cut is reduced, and the convenience and the fluency of video cutting are improved.
Example two
Fig. 3A is a flowchart of a method for video editing according to a second embodiment of the present invention, and fig. 3B is a schematic diagram illustrating a principle of determining a pointing object of a preview cursor when a full progress bar is scrolled in the method according to the second embodiment of the present invention. The embodiment is optimized on the basis of the embodiment. Specifically, as shown in fig. 3A, the present embodiment explains in detail a specific mapping process between a scroll distance of a preview cursor and a preview time stamp pointed in the full progress bar when the full progress bar is scrolled.
Optionally, as shown in fig. 3A, the present embodiment may include the following steps:
s310, generating a complete progress bar of the video set to be clipped according to the clipping thumbnail characteristics of each video in the video set to be clipped and transition controls between adjacent videos.
And S320, if the complete progress bar is manually rolled, calculating the rolling distance of the complete progress bar relative to the preview cursor, and determining the pointing object of the preview cursor under the rolling of the complete progress bar based on the rolling distance and the length of each sub progress bar and the transition control in the complete progress bar.
The complete progress bar of the video set to be edited comprises the sub-progress bar of each video and the transition control between every two adjacent videos, so that the pointing object of the preview cursor under the rolling of the complete progress bar can be the sub-progress bar or the transition control pointed by the preview cursor under the rolling of the complete progress bar.
Optionally, in this embodiment, the scrolling of the complete progress bar may be divided into two types, that is, the user manually scrolls the complete progress bar in the screen to trigger the corresponding sub-progress bar in the complete progress bar to select the currently-edited video, and the user plays each video in the video set to be edited by calling back, so that the complete progress bar is played and scrolled when the video is played. At this time, if the complete progress bar is manually scrolled, the scrolled preview picture needs to be determined according to the scroll position, and if the callback video in the video set to be edited is played and scrolled, the corresponding scroll position needs to be determined according to the play time point, that is, a certain mapping relationship exists between the scroll position of the complete progress bar and the video timestamp pointed by the preview cursor.
At this time, if the complete progress bar is manually rolled, because a video picture of a preview cursor at the pointing position of the complete progress bar is displayed in a video display window, the pointing position of the preview cursor at the complete progress bar can represent the rolling position of the complete progress bar, at this time, the rolling distance of the complete progress bar relative to the preview cursor is firstly calculated directly according to the relative position between the preview cursor and the head end position of the complete progress bar, at this time, the position of the rolling distance corresponding to the position in the complete progress bar is judged by analyzing the length of each sub-progress bar and the transition control in the complete progress bar, and thus, the pointing object of the preview cursor under the rolling of the complete progress bar can be determined; for example, as shown in fig. 3B, assuming that the scrolling distance of the complete progress bar relative to the preview cursor is X, the length of each sub-progress bar in the complete progress bar is W (i), and the length of each transition control is W (i), when 0 < X-W (1) -W (2) - … -W (i) < W (i), the pointing object of the preview cursor under the complete progress bar scrolling is a transition control between ith adjacent videos, and if 0 < X-W (1) -W (2) - … -W i) < W (i +1), the pointing object of the preview cursor under the complete progress bar scrolling is a sub-progress bar of the ith +1 video.
S330, if the pointing object is any sub-progress bar in the complete progress bar, determining a preview time stamp pointed by a preview cursor in the sub-progress bar based on the scrolling distance, the length of each sub-progress bar and the transition control which are positioned in front of the sub-progress bar in the complete progress bar and the playing duration of the target video matched with the sub-progress bar; and displaying the video frames in the target video under the preview time stamp under the rolling of the complete progress bar.
Optionally, if the pointing object is any sub-progress bar in the complete progress bar, it is necessary to determine a video frame corresponding to the preview cursor at a specific pointing position of the sub-progress bar, and display the video frame in a video display window for a user to preview, at this time, based on the scroll distance and the length of each sub-progress bar and transition control in the complete progress bar before the sub-progress bar, a ratio of the preview cursor at the pointing position of the sub-progress bar can be analyzed, a target video matched with the sub-progress bar is searched from a video set to be edited, the playing duration of the target video is determined, and then a preview timestamp pointed by the preview cursor in the sub-progress bar is calculated according to the ratio and the playing duration of the target video, the preview timestamp is an original timestamp of a pointed video frame in the target video, and then a corresponding video frame is searched from the target video according to the preview timestamp, and in the process of rolling the complete progress bar, determining the video frame in the target video under the preview time stamp in real time, and displaying in a video display window.
Illustratively, if 0 < X-W (1) -W (2) - … -W (i) < W (i +1), and the playing time length of the i +1 th video is t (i +1), the length occupied by the preview cursor at the pointing position of the sub-progress bar is r ═ X-W (1) -W (2) - … -W (i) — W (i) (i), and the preview timestamp pointed by the preview cursor in the sub-progress bar at this time is t (i +1) × r/W (i + 1).
S340, if the pointing object is any transition control in the complete progress bar and no transition special effect exists in the transition control, controlling the complete progress bar to perform rolling adjustment so that the pointing object is converted into one of the adjacent sub progress bars associated with the transition control.
Optionally, since the transition control may not add the corresponding transition special effect at the current time, that is, when the adjacent video associated with the transition control jumps and plays, the transition control directly jumps from the previous video to the next video, the transition control does not have a transition picture, so if the pointing object is any transition control within the full progress bar, and when the transition control has no transition special effect, the preview cursor will not stay under the transition control, and the complete progress bar will be directly controlled to continue the rolling adjustment, for example, by analyzing which of the adjacent sub progress bars associated with the transition control the pointing position of the preview cursor under the transition control is closer to, directly controlling the complete progress bar to perform scrolling adjustment, the pointing object of the preview cursor in the full progress bar is converted to the closer one of the adjacent sub-progress bars associated with the transition control.
And S350, if the complete progress bar is the playing and rolling of the callback video in the video set to be edited, taking the sub-progress bar of the callback video in the complete progress bar as the sub-progress bar pointed by the preview cursor under the rolling of the complete progress bar.
Optionally, if the complete progress bar is the playing and scrolling of the callback video in the video set to be edited, the identifier and the playing timestamp of the callback video may be directly determined, so that the sub-progress bar of the callback video in the complete progress bar may be determined according to the identifier of the callback video, and then the sub-progress bar of the callback video in the complete progress bar is used as the sub-progress bar pointed by the preview cursor under the scrolling of the complete progress bar.
And S360, calculating the rolling distance of the complete progress bar relative to the preview cursor according to the playing time stamp, the playing duration and the length of the sub progress bar of the callback video and the lengths of each sub progress bar and the transition control which are positioned in front of the sub progress bar of the callback video, and controlling the complete progress bar to play and roll according to the rolling distance.
Optionally, after the sub-progress bar of the callback video in the complete progress bar is taken as the sub-progress bar pointing to the preview cursor under the complete progress bar rolling, the pointing position of the preview cursor under the complete progress bar rolling needs to be controlled, so that the length occupied by the preview cursor under the sub-progress bar of the callback video can be calculated according to the playing time stamp, the playing time and the length of the sub-progress bar of the callback video, then, based on the length of each sub-progress bar and the transition control in the complete progress bar before the sub-progress bar of the callback video, the rolling distance of the complete progress bar relative to the preview cursor is calculated, and then, the complete progress bar is controlled in real time according to the rolling distance to perform playing and rolling.
Illustratively, a callback is performed in the form of (callback identifier, play timestamp) when a video is played, assuming that the callback video is determined to be the nth video in the video set to be edited according to the callback identifier, the length of the sub-progress bar of the callback video is W (n), the play timestamp in the callback video is ts, and the play duration of the callback video is t (n), at this time, the length occupied by the preview cursor under the sub-progress bar of the callback video can be calculated to be r ═ W (1) + W (2) + … + W (n-1) + W (n), and the rolling distance of the complete progress bar relative to the preview cursor is X ═ r + ts × (n)/t (n).
And S370, configuring a corresponding clipping control for the sub progress bar pointed by the preview cursor under the rolling of the complete progress bar.
And S380, based on the clipping operation under the complete progress bar and the clipping control, clipping the video set to be clipped.
According to the technical scheme provided by the embodiment, a complete progress bar of a video set to be clipped is generated according to the clipping and thumbnail characteristics of each video in the video set to be clipped and transition controls between adjacent videos, at the moment, a sub-progress bar generated by each video according to the corresponding clipping and thumbnail characteristics exists in the complete progress bar, and a transition control is connected between the sub-progress bars of the adjacent videos, and meanwhile, under the rolling of the complete progress bar, a corresponding clipping control can be directly configured for the sub-progress bar pointed by a preview cursor, so that the complete progress bar can visually provide a clipping control for independently clipping the sub-progress bar of each video and a transition control for setting a transition picture between the adjacent videos for a user, so that the user can directly execute corresponding video clipping operation by using the clipping control corresponding to each video and the transition control between the adjacent videos under the rolling of the complete progress bar, the method has the advantages that the cutting control of each video does not need to be additionally and independently displayed, and the transition control between adjacent videos does not need to be specially searched, so that the complexity of multi-video cutting operation under the video set to be cut is reduced, and the convenience and the fluency of video cutting are improved; meanwhile, an accurate mapping relation is set between the rolling position and the time stamp when the complete progress bar rolls, so that the rolling accuracy of the complete progress bar is guaranteed, and the accuracy of multi-video editing is improved.
EXAMPLE III
Fig. 4A is a flowchart of a method for video editing according to a third embodiment of the present invention, and fig. 4B is a schematic diagram of a principle that a target thumbnail corresponding to a newly added thumbnail area in a screen is dynamically requested under a complete progress bar scrolling in the method according to the third embodiment of the present invention. The embodiment is optimized on the basis of the embodiment. Specifically, as shown in fig. 4A, the present embodiment mainly explains in detail a specific process of dynamically requesting a target thumbnail corresponding to a newly added thumbnail area in a screen according to screen visibility of each thumbnail area in a complete progress bar when the complete progress bar is scrolled.
Optionally, as shown in fig. 4A, the present embodiment may include the following steps:
s410, generating a complete progress bar of the video set to be clipped according to the clipping thumbnail characteristics of each video in the video set to be clipped and transition controls between adjacent videos.
And S420, configuring a corresponding cutting control for the sub progress bar pointed by the preview cursor under the rolling of the complete progress bar.
And S430, dynamically requesting a target thumbnail corresponding to a newly-added thumbnail area in the screen according to the screen visibility of each thumbnail area in the complete progress bar when the complete progress bar is rolled.
Optionally, in the existing video clip scheme, when a thumbnail of each video in a sub-progress bar is requested, all thumbnails are usually statically requested (loaded at one time), and at this time, a large amount of memory occupation and calculation resources are consumed, so that the video clip is not responded; in order to avoid the above-mentioned problems, since the complete progress bar is scrolled within the screen, the sub-progress bar not within the screen may not display the corresponding thumbnail, therefore, the embodiment can dynamically request the target thumbnail corresponding to the thumbnail area visible in the screen by analyzing whether the thumbnail area where each thumbnail is located is visible in the screen during the scrolling process of the complete progress bar, that is, each time the complete progress bar is scrolled, first, it is determined that the thumbnail area added to the screen from the outside of the screen is currently scrolled in the complete progress bar, as shown in fig. 4B, then dynamically requesting a target thumbnail corresponding to the thumbnail area in the screen every time, but not requesting a target thumbnail corresponding to the thumbnail area outside the screen, and then dynamically requesting the thumbnail according to the mode of the required thumbnail, the thumbnail request quantity can be greatly reduced, and resource waste caused by static thumbnail request is avoided.
And S440, locally drawing a corresponding target thumbnail in each thumbnail area visible to the screen in the complete progress bar.
Optionally, after a dynamic request is made to a target thumbnail corresponding to a newly added thumbnail area in the screen, a corresponding target thumbnail needs to be locally drawn in each thumbnail area visible to the screen in the complete progress bar, so that a user can visually check a corresponding thumbnail picture in the complete progress bar, and the accuracy of video editing is ensured; and for the thumbnail area invisible to the screen, the drawing is directly abandoned, so that the granularity of the drawing is more finely controlled, and the local refreshing effect of the complete progress bar is realized.
S450, caching the target thumbnail into a preset thumbnail cache region, and controlling the upper limit of the cache of the thumbnail cache region by adopting a cache elimination algorithm.
Optionally, after dynamically requesting a target thumbnail corresponding to a newly added thumbnail region, in a later complete progress bar scrolling process, the target thumbnail may need to be requested again for local drawing, so that in this embodiment, a thumbnail cache region is preset, and after dynamically requesting a target thumbnail corresponding to a newly added thumbnail region in a screen each time, the target thumbnail can be directly cached in the thumbnail cache region, so as to facilitate subsequent reuse; meanwhile, in order to avoid the excessive memory occupation of the thumbnail cache region, in this embodiment, a cache elimination (LRU) algorithm is also Used to control the upper cache limit of the thumbnail cache region, that is, when the memory occupation amount of the thumbnail cache region exceeds the upper cache limit, the thumbnail with the earliest use time in all the cached thumbnails can be eliminated until the memory occupation amount of the thumbnail cache region is lower than the upper cache limit, so that the excessive memory occupation amount of the thumbnail cache region is avoided.
And S460, clipping the video set to be clipped based on the clipping operation under the complete progress bar and the clipping control.
According to the technical scheme provided by the embodiment, in the process of scrolling the complete progress bar of the video set to be edited, the target thumbnail corresponding to the thumbnail area is dynamically requested to be newly added in the screen according to the screen visibility of each thumbnail area in the complete progress bar, and all thumbnails do not need to be requested at one time, so that the resource waste caused by statically requesting the thumbnails is avoided, and the real-time performance and the accuracy of dynamically requesting the thumbnails are ensured.
Example four
Fig. 5A is a flowchart of a video clipping method according to a fourth embodiment of the present invention, and fig. 5B is a schematic diagram of a video clipping process according to the fourth embodiment of the present invention. The embodiment is optimized on the basis of the embodiment. Specifically, as shown in fig. 5A, the present embodiment mainly explains the clipping control configured by each sub-progressive bar and the specific clipping process under the clipping operation under the complete progressive bar and the clipping control in detail.
Optionally, as shown in fig. 5A, the present embodiment may include the following steps:
s510, generating a complete progress bar of the video set to be clipped according to the clipping thumbnail characteristics of each video in the video set to be clipped and transition controls between adjacent videos.
And S520, under the rolling of the complete progress bar, respectively configuring corresponding cutting sliders at two ends of the sub-progress bar pointed by the preview cursor, and cutting the video matched with the sub-progress bar in the video set to be cut according to the sliding operation of the cutting sliders at the two ends of each sub-progress bar.
Optionally, in order to accurately clip the sub-progress bar pointed by the preview cursor, as shown in fig. 5B, in this embodiment, corresponding clipping sliders are respectively configured at two ends of the sub-progress bar pointed by the preview cursor under the rolling of the complete progress bar, so that a user can respectively slide the clipping sliders to the middle through the two ends of each sub-progress bar, thereby executing a sliding operation of the corresponding clipping sliders, and clipping a video matching with the sub-progress bar in a video set to be clipped according to the sliding operation.
S530, if the sliding of the cutting slide block to the screen edge rolling hot area is detected, controlling the associated cutting slide block of the cutting slide block to continuously execute the sliding operation in the same cutting mode as the cutting slide block.
Optionally, in the existing video clipping scheme, a user can drag the clipping sliders at the two ends of the sub-progress bar to clip the sub-progress bar, but since the length of the sub-progress bar may exceed the screen, when the clipping slider is dragged to slide to the edge of the screen, the clipping slider cannot continue to clip, only the finger can be released, when the edge of the sub-progress bar rolls to the middle of the screen, the clipping slider is dragged to clip, and at the moment, when the sub-progress bar with the length far beyond the width of the screen is greatly clipped, the user usually needs to release the finger for clipping adjustment for multiple times, so that the complexity of clipping operation of the user is increased; therefore, the present embodiment may preset a screen edge scrolling hot zone, and if it is detected that any one of the cropping sliders slides to the screen edge scrolling hot zone, then the cutting mode of the cutting slide block under the sliding operation is analyzed, namely the part which needs to be cut when the cutting slide block slides subsequently is judged, then directly controlling the associated cutting slide block of the cutting slide block to continuously execute the sliding operation under the same cutting mode as the cutting slide block, the associated cutting slide block is the cutting slide block arranged at the other end of the sub-progress bar where the cutting slide block is positioned, at the moment, the cutting slide block touched by fingers stops rolling, the associated clipping slide block can drive the sub-progress bar where the clipping slide block is located to continuously approach the screen according to a specific step length, namely, when the cutting slide block slides to the edge of the screen to roll the hot area, the user can continue to cut without loosing his hand until the user actively releases his fingers to finish cutting; and when the cutting slide block is not rolled to the edge rolling hot area of the screen, the cutting slide block touched by the finger can gradually draw close to the edge along with the touch point all the time to realize cutting.
And S540, under the rolling of the complete progress bar, detecting transition special effect setting operation under each transition control in the complete progress bar and cutting operation under cutting controls of each sub-progress bar in the complete progress bar, and cutting the video set to be cut.
Optionally, in the rolling process of the complete progress bar, whether a user executes a corresponding transition special effect setting operation under each transition control between each two adjacent videos and whether a corresponding clipping operation is executed under a clipping control of a sub-progress bar of each video may be detected in real time in the complete progress bar, and then a video set to be clipped is clipped according to the transition special effect setting operation and the clipping operation.
According to the technical scheme provided by the embodiment, a complete progress bar of a video set to be clipped is generated according to the clipping and thumbnail characteristics of each video in the video set to be clipped and transition controls between adjacent videos, at the moment, a sub-progress bar generated by each video according to the corresponding clipping and thumbnail characteristics exists in the complete progress bar, and a transition control is connected between the sub-progress bars of the adjacent videos, and meanwhile, under the rolling of the complete progress bar, a corresponding clipping control can be directly configured for the sub-progress bar pointed by a preview cursor, so that the complete progress bar can visually provide a clipping control for independently clipping the sub-progress bar of each video and a transition control for setting a transition picture between the adjacent videos for a user, so that the user can directly execute corresponding video clipping operation by using the clipping control corresponding to each video and the transition control between the adjacent videos under the rolling of the complete progress bar, the method has the advantages that the cutting control of each video does not need to be additionally and independently displayed, and the transition control between adjacent videos does not need to be specially searched, so that the complexity of multi-video cutting operation under the video set to be cut is reduced, and the convenience and the fluency of video cutting are improved.
EXAMPLE five
Fig. 6 is a schematic structural diagram of an apparatus for video editing according to a fifth embodiment of the present invention, specifically, as shown in fig. 6, the apparatus may include:
the progress bar generating module 610 is configured to generate a complete progress bar of a video set to be clipped according to a clip thumbnail feature of each video in the video set to be clipped and a transition control between adjacent videos, where the clip thumbnail feature is a thumbnail extraction rule referred to when each video is clipped;
a cropping control configuration module 620, configured to configure a corresponding cropping control for the sub-progress bar pointed by the preview cursor when the complete progress bar is scrolled;
and the video clipping module 630 is configured to clip the video set to be clipped based on the complete progress bar and the clipping operation under the clipping control.
According to the technical scheme provided by the embodiment, a complete progress bar of a video set to be clipped is generated according to the clipping and thumbnail characteristics of each video in the video set to be clipped and transition controls between adjacent videos, at the moment, a sub-progress bar generated by each video according to the corresponding clipping and thumbnail characteristics exists in the complete progress bar, and a transition control is connected between the sub-progress bars of the adjacent videos, and meanwhile, under the rolling of the complete progress bar, a corresponding clipping control can be directly configured for the sub-progress bar pointed by a preview cursor, so that the complete progress bar can visually provide a clipping control for independently clipping the sub-progress bar of each video and a transition control for setting a transition picture between the adjacent videos for a user, so that the user can directly execute corresponding video clipping operation by using the clipping control corresponding to each video and the transition control between the adjacent videos under the rolling of the complete progress bar, the method has the advantages that the cutting control of each video does not need to be additionally and independently displayed, and the transition control between adjacent videos does not need to be specially searched, so that the complexity of multi-video cutting operation under the video set to be cut is reduced, and the convenience and the fluency of video cutting are improved.
The video clipping device provided by the embodiment can be applied to the video clipping method provided by any of the above embodiments, and has corresponding functions and advantages.
EXAMPLE six
Fig. 7 is a schematic structural diagram of an apparatus according to a sixth embodiment of the present invention, as shown in fig. 7, the apparatus includes a processor 70, a storage device 71, and a communication device 72; the number of processors 70 in the device may be one or more, and one processor 70 is taken as an example in fig. 7; the processor 70, the storage means 71 and the communication means 72 in the device may be connected by a bus or other means, as exemplified by the bus connection in fig. 7.
The device provided by the embodiment can be used for executing the method for video clipping provided by any of the above embodiments, and has corresponding functions and advantages.
EXAMPLE seven
Seventh embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, can implement the method for video clipping in any of the above embodiments. The method specifically comprises the following steps:
generating a complete progress bar of the video set to be clipped according to the clipping thumbnail characteristics of each video in the video set to be clipped and transition controls between adjacent videos, wherein the clipping thumbnail characteristics are thumbnail extraction rules referred to when each video is clipped;
configuring a corresponding cutting control for the sub progress bar pointed by the preview cursor under the rolling of the complete progress bar;
and clipping the video set to be clipped based on the complete progress bar and the clipping operation under the clipping control.
Of course, the storage medium containing the computer-executable instructions provided by the embodiments of the present invention is not limited to the method operations described above, and may also perform related operations in the method of video clipping provided by any embodiments of the present invention.
From the above description of the embodiments, it is obvious for those skilled in the art that the present invention can be implemented by software and necessary general hardware, and certainly, can also be implemented by hardware, but the former is a better embodiment in many cases. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which can be stored in a computer-readable storage medium, such as a floppy disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a FLASH Memory (FLASH), a hard disk or an optical disk of a computer, and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device) to execute the methods according to the embodiments of the present invention.
It should be noted that, in the embodiment of the video editing apparatus, the units and modules included in the apparatus are merely divided according to functional logic, but are not limited to the above division as long as the corresponding functions can be implemented; in addition, specific names of the functional units are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present invention.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (16)
1. A method of video clipping, comprising:
generating a complete progress bar of the video set to be clipped according to the clipping thumbnail characteristics of each video in the video set to be clipped and transition controls between adjacent videos, wherein the clipping thumbnail characteristics are thumbnail extraction rules referred to when each video is clipped;
configuring a corresponding cutting control for the sub progress bar pointed by the preview cursor under the rolling of the complete progress bar;
and clipping the video set to be clipped based on the complete progress bar and the clipping operation under the clipping control.
2. The method of claim 1, wherein the full progress bar is obtained by setting a corresponding transition control between sub-progress bars of each adjacent video in the video set to be edited.
3. The method of claim 1, wherein the generating a complete progress bar of the video set to be edited according to the clip thumbnail feature of each video in the video set to be edited and a transition control between adjacent videos comprises:
when a new current video is added into the video set to be edited, extracting all thumbnails in the current video according to the editing thumbnail characteristics of the current video, and combining all thumbnails in the current video to obtain a sub-progress bar of the current video;
if the current video is the first video in the video set to be clipped, taking the sub progress bar of the current video as the complete progress bar of the video set to be clipped;
if the current video is the non-first video in the video set to be clipped, connecting the sub-progress bar of the current video to the rear end of the sub-progress bar of the last video in the video set to be clipped through a transition control between adjacent videos to form a complete progress bar after the video set to be clipped is updated.
4. The method of claim 1, wherein when the full progress bar is scrolled, further comprising:
if the complete progress bar is manually rolled, calculating the rolling distance of the complete progress bar relative to the preview cursor, and determining a pointing object of the preview cursor under the rolling of the complete progress bar based on the rolling distance and the length of each sub-progress bar and transition control in the complete progress bar, wherein the pointing object is a sub-progress bar or transition control pointed by the preview cursor under the rolling of the complete progress bar;
and if the complete progress bar is the playing and rolling of the callback video in the video set to be edited, taking the sub-progress bar of the callback video in the complete progress bar as the sub-progress bar pointed by the preview cursor under the rolling of the complete progress bar.
5. The method of claim 4, further comprising, after determining the pointing object of the preview cursor under the full progress bar scroll based on the scroll distance and the length of each sub-progress bar and transition control within the full progress bar, further comprising:
if the pointing object is any sub-progress bar in the complete progress bar, determining a preview time stamp pointed by the preview cursor in the sub-progress bar based on the scrolling distance, the length of each sub-progress bar and transition control positioned in front of the sub-progress bar in the complete progress bar and the playing duration of the target video matched with the sub-progress bar;
and displaying the video frame in the target video under the preview time stamp under the rolling of the complete progress bar.
6. The method of claim 4, wherein if the full progress bar is a manual scroll, further comprising:
and if the pointing object is any transition control in the complete progress bar and no transition special effect exists in the transition control, controlling the complete progress bar to perform rolling adjustment so that the pointing object is converted into one of the adjacent sub progress bars associated with the transition control.
7. The method of claim 4, wherein after taking the sub-progress bar of the callback video within the full progress bar as the sub-progress bar pointed to by the preview cursor when the full progress bar is scrolled, further comprising:
and calculating the rolling distance of the complete progress bar relative to the preview cursor according to the playing time stamp, the playing duration and the length of the sub progress bar of the callback video and the lengths of each sub progress bar and the transition control which are positioned in front of the sub progress bar of the callback video, and controlling the complete progress bar to play and roll according to the rolling distance.
8. The method of claim 1, wherein when the full progress bar is scrolled, further comprising:
and dynamically requesting a target thumbnail corresponding to the newly-added thumbnail area in the screen according to the screen visibility of each thumbnail area in the complete progress bar.
9. The method according to claim 8, further comprising, after dynamically requesting a new target thumbnail corresponding to the thumbnail region in the screen:
and caching the target thumbnail into a preset thumbnail cache region, and controlling the upper cache limit of the thumbnail cache region by adopting a cache elimination algorithm.
10. The method according to claim 8, further comprising, after dynamically requesting a new target thumbnail corresponding to the thumbnail region in the screen:
and locally drawing a corresponding target thumbnail in each thumbnail area visible to the screen in the complete progress bar.
11. The method according to any one of claims 1-10, wherein the clipping the set of videos to be clipped based on the clipping operation under the full progress bar and the clipping control comprises:
and under the rolling of the complete progress bar, detecting transition special effect setting operation under each transition control in the complete progress bar and cutting operation under cutting controls of each sub-progress bar in the complete progress bar, and cutting the video set to be cut.
12. The method of claim 1, wherein configuring a corresponding cropping control for the sub-progress bar pointed by the preview cursor comprises:
and respectively configuring corresponding cutting sliders at two ends of the sub-progress bar pointed by the preview cursor, so as to cut the video matched with the sub-progress bar in the video set to be cut according to the sliding operation of the cutting sliders at the two ends of each sub-progress bar.
13. The method of claim 12, further comprising:
and if the cutting slide block slides to the screen edge rolling hot area, controlling the associated cutting slide block of the cutting slide block to continuously execute the sliding operation in the same cutting mode as the cutting slide block.
14. An apparatus for video clipping, comprising:
the progress bar generating module is used for generating a complete progress bar of the video set to be clipped according to the clip thumbnail characteristics of each video in the video set to be clipped and transition controls between adjacent videos, wherein the clip thumbnail characteristics are thumbnail extraction rules referred to when each video is clipped;
the cutting control configuration module is used for configuring a corresponding cutting control for the sub progress bar pointed by the preview cursor under the rolling of the complete progress bar;
and the video clipping module is used for clipping the video set to be clipped based on the complete progress bar and the clipping operation under the clipping control.
15. An apparatus, characterized in that the apparatus comprises:
one or more processors;
storage means for storing one or more programs;
when executed by the one or more processors, cause the one or more processors to implement a method of video clipping as claimed in any one of claims 1-13.
16. A computer-readable storage medium, on which a computer program is stored, which program, when being executed by a processor, is adapted to carry out the method of video clipping of any one of the claims 1-13.
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| CN115529415A (en) * | 2021-04-30 | 2022-12-27 | 苹果公司 | User interface for altering visual media |
| CN114390356A (en) * | 2022-01-19 | 2022-04-22 | 维沃移动通信有限公司 | Video processing method, video processing device and electronic equipment |
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