CN104159161B - The localization method and device of video image frame - Google Patents

Abstract

The embodiment of the invention discloses a video image frame positioning method and device. The method includes: acquiring a video reference time; determining a video frame location time according to the video reference time and a relative adjustment time set by a user operation; and outputting a video image frame corresponding to the video frame location time in the video. The present invention solves the technical problem that in most cases, the captured video picture is not what the user really wants to capture or the video picture with the best effect in most cases in the existing video capture technology, improves the positioning accuracy of the video capture, and optimizes the existing The advanced video interception technology meets people's increasingly personalized and convenient video interception needs.

Description

Method and device for locating video image frames

technical field

Embodiments of the present invention relate to video image processing technologies, and in particular, to a method and device for locating video image frames.

Background technique

With the continuous development of Internet technology and the continuous increase of network bandwidth today, online video has attracted a large number of users with its convenient access experience, diverse video sources and real-time update speed, making online video a part of users' online life. Indispensable and important component.

At present, more and more end users tend to use terminal devices (for example, desktop computers, smart phones, or tablet computers, etc.) to watch online videos, or download online videos locally for viewing. Generally speaking, end users can install specific local playback application software (for example, KMPlayer, Media PlayerClassic, etc.) or web video clients (for example, Thunder Kankan, Youku Video, Tudou Video) and other video playback tools After that, you can watch network or local video.

When a user watches a video through a video playback tool and sees a wonderful picture, many times he wants to capture the video picture and share it with the people around him. The existing video capture technology requires the end user to drag the video playback progress bar to the position where the screen capture is desired, and then pause the screen to complete the screen capture. And the main defect of prior art is: in most cases, the video frame intercepted by the mode that the user drags the video playback progress bar is often not the video frame that the user really wants to intercept or the video frame with the best effect.

Contents of the invention

In view of this, the embodiments of the present invention provide a method and device for locating video image frames, so as to optimize the existing video interception technology and meet people's increasing demand for personalized and convenient video interception.

In a first aspect, an embodiment of the present invention provides a method for locating video image frames, including:

Obtain the video reference time;

Determine the video frame positioning time according to the video reference time and the relative adjustment time set by the user operation;

Outputting the video image frame corresponding to the positioning time of the video frame in the video.

In a second aspect, an embodiment of the present invention provides a positioning device for a video image frame, including:

A reference time acquisition unit, configured to obtain a video reference time;

A video frame positioning time determination unit, configured to determine the video frame positioning time according to the video reference time and the relative adjustment time set by the user operation;

A video image frame output unit, configured to output the video image frame corresponding to the positioning time of the video frame in the video.

In the embodiment of the present invention, the video reference time and the relative adjustment time are determined according to user operations; the sum of the video reference time and the relative adjustment time is used as the video frame positioning time; The technical means provided by the video image frame to the user solves the technical problem that in most cases, the captured video picture is not what the user really wants to capture or the video picture with the best effect in the existing video interception technology, and improves the video capture technology. It optimizes the existing video interception technology and meets people's increasingly personalized and convenient video interception needs.

Description of drawings

Fig. 1 is a flow chart of a positioning method of a video image frame according to the first embodiment of the present invention;

Fig. 2 is a flow chart of a positioning method of a video image frame according to the second embodiment of the present invention;

Fig. 3 is a flowchart of a positioning method of a video image frame according to the third embodiment of the present invention;

FIG. 4 is a flowchart of a positioning method of a video image frame according to a fourth embodiment of the present invention;

FIG. 5 is a schematic diagram of human-computer interaction in a preferred application scenario of an embodiment of the present invention;

Fig. 6 is a structural diagram of an apparatus for locating video image frames according to a fifth embodiment of the present invention.

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, specific embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only parts related to the present invention are shown in the drawings but not all content.

First, the implementation idea of each embodiment of the present invention is briefly described as follows: In order to accurately locate the video image frame actually required by the user in the video, the various embodiments of the present invention comprehensively use the video reference time and the relative adjustment time to finally locate the video image frame . Among them, the video reference time is used for rough positioning, and the relative adjustment time is used for precise positioning based on the video reference time, that is, on the basis of the video reference time, adjust the set seconds or set Set the number of frames to achieve precise positioning of video image frames.

first embodiment

Fig. 1 is a flow chart of a positioning method of a video image frame according to the first embodiment of the present invention, the method of this embodiment can be executed by a positioning device of a video image frame, and the device can be realized by means of hardware and/or software , and be integrated into the terminal device where the video player is located and used in conjunction with the video player, or as a subroutine of the video player. The method of this embodiment specifically includes the following steps:

Step 110, acquiring a video reference time.

In this embodiment, the terminal device acquires the video reference time.

Wherein, the video reference time is specifically used as a positioning starting point of a video image frame. Based on the video reference time, the terminal device accurately locates the video image frame that the user expects to obtain according to the relative adjustment time. From another perspective, the user can use the video frame corresponding to the video reference time as the positioning reference to move forward or backward in the video Adjust the set time or set the number of frames (set relative adjustment time) to obtain desired video image frames.

In this embodiment, the way the terminal device acquires the video reference time may specifically include:

Determine the drag position corresponding to the drag operation according to the user's drag operation to the video playback progress bar of the video being played in the video player; obtain the video playback time corresponding to the drag position as the video reference time ;or

According to the user's video pause operation on the video being played by the video player, obtain the video playback time corresponding to the current pause position as the video reference time; or

The playing time of the video input by the user is obtained directly, and used as a video reference time, etc., and the comparison is not limited.

Step 120: Determine the video frame positioning time according to the video reference time and the relative adjustment time set by the user operation.

In this embodiment, the terminal device determines the video frame positioning time according to the video reference time and the relative adjustment time set by the user operation.

Wherein, the relative adjustment time is specifically used for precisely positioning the video image frame that the user expects to acquire on the basis of the video reference time.

Wherein, the method for obtaining the relative adjustment time set by the user operation may specifically include:

The adjustment time input by the user (for example, 0.5s, 1s or 2s, etc.) is directly used as the relative adjustment time, wherein the accuracy of the above-mentioned adjustment seconds can be preset according to the actual situation; or

Calculate the corresponding relative adjustment time according to the number of adjustment frames input by the user (for example, 1 frame, 2 frames, or 5 frames, etc.); or

According to the user clicking or touching the setting area in the human-computer interaction interface, the corresponding relative adjustment time is obtained or calculated, and the comparison is not limited.

Wherein, according to the video reference time and the relative adjustment time set by the user operation, determining the video frame positioning time may specifically include:

If the relative adjustment time also includes adjustment direction information, typically, a relative adjustment time greater than 0 means that the video frame is adjusted in the forward direction of the video, and a relative adjustment time less than 0 means that the video frame is adjusted in the backward direction of the video. At this point, the sum of the video reference time and the relative adjustment time can be directly used as the video frame positioning time;

If the information of the adjustment direction is not included in the relative adjustment time, it only represents the adjustment distance in time. Typically, the relative adjustment time is only represented by a positive integer. At this time, if it is determined to adjust the video frame to the forward direction of the video, the sum of the video reference time and the relative adjustment time can be used as the video frame positioning time; if it is determined to adjust the video frame to the video backward direction, all The difference between the video reference time and the relative adjustment time is used as the video frame positioning time, etc., which is not limited.

Step 130: Output the video image frame corresponding to the positioning time of the video frame in the video.

In this embodiment, the terminal device outputs the video image frame corresponding to the positioning time of the video frame in the video.

Wherein, outputting the video image frame corresponding to the positioning time of the video frame in the video may specifically include:

The video frame positioning time is sent to the set video jump interface (for example, the seekTo () interface function in the player, etc.), to realize that the video jumps to the video position corresponding to the video frame positioning time. Decoding; obtaining the decoding result as a video image frame corresponding to the positioning time of the video frame in the video and outputting it; or

According to the video frame positioning time, obtain the video frame number corresponding to the timing time in the video. For example, the video frame positioning time obtained is 35min, and the frame interval ΔT=0.1s of the video can determine the video frame number corresponding to the video frame. The video frame number corresponding to the frame positioning time is: 35*60/0.1=21000; the video image frame corresponding to the video frame number in the video is acquired and output.

In the embodiment of the present invention, the video reference time and the relative adjustment time are determined according to user operations; the sum of the video reference time and the relative adjustment time is used as the video frame positioning time; The technical means provided by the video image frame to the user solves the technical problem that in most cases, the captured video picture is not what the user really wants to capture or the video picture with the best effect in the existing video interception technology, and improves the video capture technology. It optimizes the existing video interception technology and meets people's increasingly personalized and convenient video interception needs.

second embodiment

Fig. 2 is a flow chart of a video image frame positioning method according to the second embodiment of the present invention. This embodiment is optimized on the basis of the above embodiments. In this embodiment, the step of obtaining the video reference time is preferably optimized as follows: according to the user's drag operation on the video playback progress bar, determine the time corresponding to the drag operation drag position; obtain the video playback time corresponding to the drag position, as the video reference time;

Preferably, the step is determined according to the video reference time and the relative adjustment time set by the user operation, and the video frame positioning time is optimized as follows: according to the frame adjustment number input by the user, or according to the frame adjustment number and the frame adjustment direction input by the user, determine Relative adjustment time; according to the video reference time and the relative adjustment time, determine the video frame positioning time;

Preferably, the step of obtaining the video image frame corresponding to the video frame positioning time in the video is optimized as: sending the video frame positioning time to the set video jump interface, so as to realize the video jump to the corresponding video frame Decoding the video position corresponding to the positioning time of the video frame; obtaining the decoding result as a video image frame corresponding to the positioning time of the video frame in the video and outputting it.

Correspondingly, the method of this embodiment includes the following steps:

Step 210, according to the user's dragging operation on the video playback progress bar, determine the dragging position corresponding to the dragging operation.

In this embodiment, the terminal device determines a drag position corresponding to the drag operation according to the user's drag operation on the video playback progress bar.

In this embodiment, the terminal device monitors mousedown (mouse press), mousemove (mouse movement) and mouseup (mouse lift) events on the video playback progress bar control during the playback of the video player. Detect the user's drag operation on the progress bar of the video player, and determine the drag position corresponding to the drag operation.

Step 220, acquire the video playing time corresponding to the dragging position as the video reference time.

In this embodiment, the terminal device acquires the video playing time corresponding to the dragging position as the video reference time.

Wherein, the terminal device may first calculate the ratio of the drag position to the entire video playback progress bar, and then determine the video playback time corresponding to the drag position according to the playback time of the entire video.

For example, the terminal device calculates that the dragging position is located at 2/3 of the entire video playback progress bar, and the total playing time of the video is 1:30:00, and finally the video playback corresponding to the dragging position can be determined The time is 60 minutes.

Step 230: Determine the relative adjustment time according to the frame adjustment number input by the user, or according to the frame adjustment number and frame adjustment direction input by the user.

In this embodiment, the terminal device can determine the relative adjustment time according to the number of frame adjustments input by the user;

For example, if the number of frame adjustments input by the user is 3, and the frame interval of the video is ΔT=0.1s, the relative adjustment time can be determined as 3*ΔT=0.3s.

The terminal device may also determine the relative adjustment time according to the frame adjustment number and frame adjustment direction input by the user.

For example, the number of frame adjustments input by the user is 3, the frame adjustment direction is the video backward direction, and the video frame interval ΔT=0.1s, the relative adjustment time can be determined as -3*ΔT=-0.3s.

Step 240: Determine the video frame positioning time according to the video reference time and the relative adjustment time.

In this embodiment, the terminal device determines the video frame positioning time according to the video reference time and the relative adjustment time.

Step 250: Send the video frame positioning time to the set video jump interface, so as to jump the video to the video position corresponding to the video frame positioning time for decoding.

Step 260, obtain the decoding result as a video image frame in the video corresponding to the positioning time of the video frame, and output it.

In the embodiment of the present invention, the video reference time and the relative adjustment time are determined according to user operations; the sum of the video reference time and the relative adjustment time is used as the video frame positioning time; The technical means provided by the video image frame to the user solves the technical problem that in most cases, the captured video picture is not what the user really wants to capture or the video picture with the best effect in the existing video interception technology, and improves the video capture technology. It optimizes the existing video interception technology and meets people's increasingly personalized and convenient video interception needs.

third embodiment

Fig. 3 is a flow chart of a method for locating video image frames according to the third embodiment of the present invention. This embodiment is optimized on the basis of the above-mentioned embodiments. In this embodiment, it is preferable to optimize the relative adjustment time according to the frame adjustment number and frame adjustment direction input by the user as follows: when the frame adjustment direction input by the user is forward direction, according to the frame adjustment number M input by the user and the frame interval ΔT of the video, determine the relative adjustment time as M*ΔT; when the frame adjustment direction input by the user is the backward direction, adjust the number N and the video frame according to the user input Frame interval ΔT, determine the relative adjustment time as -N*ΔT; where, M and N are integers greater than or equal to 1;

Preferably, the step of determining the video frame positioning time according to the video reference time and the relative adjustment time is optimized as: taking the sum of the video reference time and the relative adjustment time as the video frame positioning time.

Correspondingly, the method of this embodiment includes the following steps:

Step 310, acquiring a video reference time.

Step 320 , judging whether the frame adjustment direction input by the user is the forward direction: if yes, execute step 330 ; otherwise, execute step 340 .

Step 330 : Determine the relative adjustment time as M*ΔT according to the frame adjustment number M input by the user and the frame interval ΔT of the video, and execute step 350 .

In this embodiment, M is an integer greater than or equal to 1, and the frame interval ΔT of the video can be calculated by obtaining the frame rate f of the video, where: ΔT=1/f

Step 340 : Determine the relative adjustment time as -N*ΔT according to the frame adjustment number N input by the user and the frame interval ΔT of the video, and execute step 350 .

In this embodiment, N is an integer greater than or equal to 1.

Step 350, taking the sum of the video reference time and the relative adjustment time as the video frame positioning time.

Step 360: Output the video image frame corresponding to the positioning time of the video frame in the video.

In the embodiment of the present invention, the video reference time and the relative adjustment time are determined according to user operations; the sum of the video reference time and the relative adjustment time is used as the video frame positioning time; The technical means provided by the video image frame to the user solves the technical problem that in most cases, the captured video picture is not what the user really wants to capture or the video picture with the best effect in the existing video interception technology, and improves the video capture technology. It optimizes the existing video interception technology and meets people's increasingly personalized and convenient video interception needs.

Fourth embodiment

Fig. 4 is a flow chart of a video image frame positioning method according to the fourth embodiment of the present invention. This embodiment is optimized on the basis of the above-mentioned embodiments. In this embodiment, it is preferable to optimize the relative adjustment time in the step of determining the relative adjustment time according to the frame adjustment number input by the user as follows: adjust the number P of frames according to the user input and the frame interval ΔT of the video , determine the relative adjustment time as P*ΔT; where, P is an integer greater than or equal to 1;

Preferably, the step of determining the video frame positioning time according to the video reference time and the relative adjustment time is optimized as: when the frame adjustment direction input by the user is the forward direction, the video reference time and the relative adjustment time The sum is used as the video frame positioning time; when the frame adjustment direction input by the user is the backward direction, the difference between the video reference time and the relative adjustment time is used as the video frame positioning time.

Correspondingly, the method of this embodiment includes the following steps:

Step 410, acquire the video reference time.

Step 420: Determine the relative adjustment time as P*ΔT according to the frame adjustment number P input by the user and the frame interval ΔT of the video.

In this embodiment, P is an integer greater than or equal to 1

Step 430 , judging whether the frame adjustment direction input by the user is the forward direction: if yes, execute step 440 ; otherwise, execute step 450 .

Step 440, the sum of the video reference time and the relative adjustment time is used as the video frame positioning time, and step 460 is executed.

Step 450, the difference between the video reference time and the relative adjustment time is used as the video frame positioning time, and step 460 is executed.

Step 460: Output the video image frame corresponding to the positioning time of the video frame in the video.

In the embodiment of the present invention, the video reference time and the relative adjustment time are determined according to user operations; the sum of the video reference time and the relative adjustment time is used as the video frame positioning time; The technical means provided by the video image frame to the user solves the technical problem that in most cases, the captured video picture is not what the user really wants to capture or the video picture with the best effect in the existing video interception technology, and improves the video capture technology. It optimizes the existing video interception technology and meets people's increasingly personalized and convenient video interception needs.

FIG. 5 shows a schematic diagram of human-computer interaction of a preferred application scenario of the embodiment of the present invention. In this preferred application scenario, the video player can add an operation button of "screen capture mode" in the human-computer interaction interface of the video player. When the user expects to capture video image frames during video playback, he can roughly drag the video playback progress bar to the position where he wants to capture the image, and then click the "screen capture mode" button to enter the screen capture mode; after entering the screen capture mode, the video playback is paused, At the bottom of the video player there will be a row of frame adjustment buttons labeled with left and right arrows. As shown in Figure 5, the left arrow represents the frame adjustment direction that the user can click to input the backward direction, the right arrow represents the frame adjustment direction that the user can click to enter the forward direction, and the number of arrows represents the user can click this to input the corresponding Number of frame adjustments. After the user finds the desired video image frame by clicking the frame adjustment button, the desired video image frame can be intercepted by clicking the save button.

In the above preferred implementation manner, it is preferred to integrate the frame adjustment direction and the frame adjustment number into the corresponding buttons to instruct the user to perform corresponding input. Of course, those skilled in the art can understand that the above frame adjustment direction and frame adjustment number are also It may be displayed to the user in the form of an input box to instruct the user to make a corresponding input, which is not limited.

fifth embodiment

FIG. 6 shows a structural diagram of an apparatus for locating video image frames according to a fifth embodiment of the present invention. As shown in Figure 6, the device includes:

A reference time obtaining unit 61, configured to obtain a video reference time.

The video frame positioning time determination unit 62 is configured to determine the video frame positioning time according to the video reference time and the relative adjustment time set by the user operation.

The video image frame output unit 63 is configured to output the video image frame corresponding to the positioning time of the video frame in the video.

In the embodiment of the present invention, the video reference time and the relative adjustment time are determined according to user operations; the sum of the video reference time and the relative adjustment time is used as the video frame positioning time; The technical means provided by the video image frame to the user solves the technical problem that in most cases, the captured video picture is not what the user really wants to capture or the video picture with the best effect in the existing video interception technology, and improves the video capture technology. It optimizes the existing video interception technology and meets people's increasingly personalized and convenient video interception needs.

On the basis of the above-mentioned embodiments, the reference time acquisition unit can be used for:

According to the user's drag operation on the video playback progress bar, determine the drag position corresponding to the drag operation;

Acquiring the playing time of the video corresponding to the dragging position as the reference time of the video.

On the basis of the above-mentioned embodiments, the video frame positioning time determination unit may include:

The relative adjustment time determination subunit is used to determine the relative adjustment time according to the number of frame adjustments input by the user, or according to the number of frame adjustments and the direction of frame adjustments input by the user;

The positioning time determination subunit is configured to determine a video frame positioning time according to the video reference time and the relative adjustment time.

On the basis of the above-mentioned embodiments, the relative adjustment time determination subunit can be specifically used for:

When the frame adjustment direction input by the user is the forward direction, according to the frame adjustment number M input by the user and the frame interval ΔT of the video, determine the relative adjustment time as M*ΔT;

When the frame adjustment direction input by the user is the backward direction, according to the frame adjustment number N and the frame interval ΔT of the video input by the user, the relative adjustment time is determined to be -N*ΔT; wherein, M and N are integers greater than or equal to 1;

The positioning time determination subunit can specifically be used for:

The sum of the video reference time and the relative adjustment time is used as the video frame positioning time.

On the basis of the above-mentioned embodiments, the relative adjustment time determination subunit can be specifically used for:

According to the frame adjustment number P input by the user and the frame interval ΔT of the video, determine the relative adjustment time as P*ΔT; wherein, P is an integer greater than or equal to 1;

The positioning time determination subunit can specifically be used for:

When the frame adjustment direction input by the user is the forward direction, the sum of the video reference time and the relative adjustment time is used as the video frame positioning time;

When the frame adjustment direction input by the user is the backward direction, the difference between the video reference time and the relative adjustment time is used as the video frame positioning time.

On the basis of the above-mentioned embodiments, the video image frame output unit can be used for:

Sending the video frame positioning time to the set video jump interface, so as to jump the video to the video position corresponding to the video frame positioning time for decoding;

The obtained decoding result is output as a video image frame corresponding to the positioning time of the video frame in the video.

The video image frame locating device provided in the embodiments of the present invention can be used to execute the video image frame locating method provided in any embodiment of the present invention, and has corresponding functional modules to achieve the same beneficial effects.

Apparently, those skilled in the art should understand that the above-mentioned modules or steps of the present invention can be implemented by the above-mentioned server. Optionally, the embodiments of the present invention can be implemented by programs executable by a computer device, so that they can be stored in a storage device and executed by a processor, and the program can be stored in a computer-readable storage medium, The above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.; or they may be fabricated into individual integrated circuit modules, or multiple modules or steps among them may be fabricated into a single integrated circuit module for implementation. As such, the present invention is not limited to any specific combination of hardware and software.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims (4)

1. A positioning method of a video image frame, characterized in that, comprising: Add the operation button of "Screenshot Mode" to the human-computer interaction interface of the video player; According to the user's video pause operation on the video being played by the video player, obtain the video playback time corresponding to the current pause position as the video reference time; among them, the operation of video pause is to click the operation button of the screen capture mode, when the "screen capture mode" is clicked the operation button to enter the screenshot mode, and the video reference time is used as the positioning starting point of the video image frame; When the frame adjustment direction input by the user is the forward direction, according to the frame adjustment number M input by the user and the frame interval ΔT of the video, the relative adjustment time is determined to be M*ΔT; when the frame adjustment direction input by the user is the backward direction, according to the user The input frame adjustment number N and the frame interval ΔT of the video determine that the relative adjustment time is-N*ΔT; wherein, M and N are integers greater than or equal to 1; the sum of the video reference time and the relative adjustment time, positioning time as a video frame; or According to the frame adjustment number P input by the user and the frame interval ΔT of the video, determine the relative adjustment time as P*ΔT; wherein, P is an integer greater than or equal to 1; when the frame adjustment direction input by the user is the forward direction, the video The sum of the reference time and the relative adjustment time is used as the video frame positioning time; when the frame adjustment direction input by the user is the backward direction, the difference between the video reference time and the relative adjustment time is used as the video frame positioning time; Wherein, the frame adjustment direction and the number of frame adjustments are displayed to the user in the form of an input box to instruct the user to perform corresponding input; Sending the video frame positioning time to the set video jump interface, so as to jump the video to the video position corresponding to the video frame positioning time for decoding; The obtained decoding result is output as a video image frame corresponding to the positioning time of the video frame in the video. 2. The method according to claim 1, wherein obtaining the video reference time also includes: According to the user's drag operation on the video playback progress bar, determine the drag position corresponding to the drag operation; Acquiring the playing time of the video corresponding to the dragging position as the reference time of the video. 3. A positioning device for a video image frame, characterized in that, comprising: The operation button adding unit is used to add the operation button of "screen capture mode" on the human-computer interaction interface of the video player; The reference time acquisition unit is used to obtain the video playback time corresponding to the current pause position according to the video pause operation of the video player being played by the user as the video reference time; wherein, the operation of the video pause is to click the operation button of the screenshot mode , when the operation button of "screen capture mode" is clicked, the screen capture mode is entered, and the video reference time is used as the positioning starting point of the video image frame; The video frame alignment time determination unit includes: The relative adjustment time determination subunit is specifically used for: when the frame adjustment direction input by the user is the forward direction, determine the relative adjustment time as M*ΔT according to the frame adjustment number M input by the user and the frame interval ΔT of the video; When the frame adjustment direction is the backward direction, the relative adjustment time is determined to be -N*ΔT according to the number N of frame adjustments input by the user and the frame interval ΔT of the video; wherein, M and N are integers greater than or equal to 1; The positioning time determination subunit is specifically configured to: use the sum of the video reference time and the relative adjustment time as the video frame positioning time; or The relative adjustment time determination subunit is specifically used to: determine the relative adjustment time as P*ΔT according to the frame adjustment number P input by the user and the frame interval ΔT of the video; wherein, P is an integer greater than or equal to 1; The positioning time determination subunit is specifically used for: when the frame adjustment direction input by the user is the forward direction, the sum of the video reference time and the relative adjustment time is used as the video frame positioning time; When it is the backward direction, the difference between the video reference time and the relative adjustment time is used as the video frame positioning time; Wherein, the frame adjustment direction and the number of frame adjustments are displayed to the user in the form of an input box to instruct the user to perform corresponding input; The video image frame output unit is used for: Sending the video frame positioning time to the set video jump interface, so as to jump the video to the video position corresponding to the video frame positioning time for decoding; The obtained decoding result is output as a video image frame corresponding to the positioning time of the video frame in the video. 4. The device according to claim 3, wherein the reference time acquisition unit is also used for: According to the user's drag operation to the video playback progress bar, determine the drag position corresponding to the drag operation; Acquiring the playing time of the video corresponding to the dragging position as the reference time of the video.