TWI672946B - Method and device for playing video - Google Patents

Abstract

The present disclosure provides a method for playing a video, comprising: receiving a video, wherein the video is composed of a plurality of frames; determining whether each frame is a variable frame; and dividing the video into a complex variable segment and a plurality according to the determination result. a non-changing section; establishing a segmentation flag for a first frame in each of the unchanging sections; and skipping the non-changing section according to the segmentation flag to play the above-mentioned changed area in the video segment.

Description

Method and device for playing video

The disclosure generally relates to the field of multimedia information processing technologies, and more particularly to a method and apparatus for playing video.

In the multimedia playing interface of the existing computer, most of the following playback functions are provided: playing full multimedia, manually inputting start and end times, to play a specific multimedia section.

However, when the user is watching the multimedia video, it is impossible to know whether the multimedia video has many unchanged sections. Therefore, it is necessary to provide a method and a device for playing a video that is convenient for a user to operate, and divide the video into a variable segment and a non-variable segment for the user to perform video skip playback and locate the video to improve the playback efficiency.

The disclosures below are merely exemplary and are not meant to be limiting in any way. Other aspects, embodiments, and features will be apparent from the description and drawings. That is, the following disclosure is provided to introduce concepts, advantages, benefits, and novel and non-obvious technical advantages described herein. Selected, not all, embodiments will be described in further detail below. Therefore, the following disclosure It is not intended to be essential to the claimed subject matter, and is not intended to be used in the scope of the claimed subject matter.

The disclosure provides a method and apparatus for playing a video.

The present disclosure provides a method for playing a video, comprising: receiving a video, wherein the video is composed of a plurality of frames; determining whether each frame is a variable frame; and dividing the video into a complex variable segment and a plurality according to the determination result. a non-changing section; establishing a segmentation flag for a first frame in each of the unchanging sections; and skipping the non-changing section according to the segmentation flag to play the above-mentioned changed area in the video segment.

In some embodiments, the step of determining whether each frame is a variable frame further comprises: converting each of the above frames into a grayscale frame; determining a first between a pixel value of the grayscale frame and a grayscale value of 0 Whether a difference between a difference or a grayscale value 255 is less than or equal to a first threshold; and when the first difference or the second difference is greater than the first threshold, determining that the frame is the above Change frame.

In some embodiments, the step of determining whether each frame is a variable frame further comprises: determining that a pixel in each frame is the largest when the first difference or the second difference is less than or equal to the first threshold Whether a third difference between the value and the minimum value of a pixel is greater than a second threshold; and when the third difference is greater than the second threshold, obtaining the pixel value and the previous gray level frame in the grayscale frame An absolute value of the difference of the pixel values; performing a binarization operation on the absolute value of the difference to generate a binarized frame, and determining whether a maximum value of one of the pixel values in the binarized frame is greater than 0; When the maximum value is greater than 0, it is determined that the frame is the fluctuation frame.

In some embodiments, the second threshold is less than the first threshold.

In some embodiments, the method further includes: providing an operation interface to play the video; wherein the operation mask has a first progress bar and a second progress bar, wherein the first progress bar is used to display the video. a first playback progress, the second progress bar is configured to display a second playback progress of the video playback to the changed segment.

The present disclosure provides an apparatus for playing video, including: one or more processors; and one or more computer storage media storing computer readable instructions, wherein the processor uses the computer storage medium to perform: receiving a video, The video is composed of a plurality of frames; determining whether each frame is a variable frame; and dividing the video into a complex variable segment and a complex unchanging segment according to the foregoing determination result; The first frame establishes a segmentation flag; and skipping the non-changing segment according to the segmentation flag to implement playing the changed segment in the video.

100‧‧‧ method

S105, S110, S115, S120

200‧‧‧ method

Steps S205, S210, S215, S220, S225, S230, S235, S240‧‧

400‧‧‧Operator interface

410‧‧‧First progress bar

420‧‧‧Second progress bar

411, 413, 415‧‧ ‧ change section

412, 414‧‧‧No change section

412a, 414a‧‧‧ segment flag

430‧‧‧Play progress

500‧‧‧ computing device

510‧‧ ‧ busbar

512‧‧‧ memory

514‧‧‧ processor

516‧‧‧Display components

518‧‧‧I/O mouth

520‧‧‧I/O components

522‧‧‧Power supply

The figures are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of the disclosure. The drawings illustrate the embodiments of the disclosure and, together with the description, illustrate the principles of the disclosure. It is understood that the drawings are not necessarily to scale,

FIG. 1 is a flow chart showing a method for playing a video according to an embodiment of the present disclosure.

2 is a flow chart showing a method of determining whether each frame is a variation frame according to an embodiment of the present disclosure.

FIG. 3A is a schematic diagram showing a frame in a video according to an embodiment of the present disclosure.

FIG. 3B is a schematic diagram showing the conversion of the above frame into a grayscale frame according to an embodiment of the disclosure.

FIG. 3C is a schematic diagram showing the absolute value of the difference between the pixel value in the gray scale frame and the pixel value of the previous gray scale frame according to an embodiment of the disclosure.

FIG. 3D is a schematic diagram showing a binarized frame according to an embodiment of the present disclosure.

FIG. 3E is a schematic diagram showing erosion of a binarized frame according to an embodiment of the present disclosure.

FIG. 4 is a schematic diagram of playing a video according to an operation interface of an electronic device according to an embodiment of the disclosure.

FIG. 5 shows an exemplary operating environment for implementing embodiments of the present disclosure.

Various aspects of the disclosure will be more fully described below with reference to the drawings. However, the disclosure may be embodied in many different forms and should not be construed as being limited to any particular structure or function presented. Rather, these aspects are provided so that this disclosure will be thorough and complete, and the disclosure will fully convey the scope of the disclosure. Based on the teachings herein, those skilled in the art will appreciate that any aspect disclosed herein, alone or in combination with any other aspect of the present disclosure, is within the scope of the disclosure. It is intended to cover any aspect disclosed herein. For example, any number of devices or methods of implementation presented herein can be used. In addition, the scope of the present disclosure is intended to cover an apparatus or method that is implemented using other structures, functions, or structures and functions, in addition to the various aspects disclosed herein. It should be understood that any aspect disclosed herein may be embodied by one or more elements of the patent application.

The word "exemplary" is used herein to mean "serving as an example, instance or description." Any aspect of the disclosure or a design described herein as "exemplary" is not necessarily to be construed as preferred or preferred. In addition, the same numerals indicate the same elements in all the figures, and the articles "a" and "an"

It can be understood that when an element is referred to as being "connected" or "coupled" to another element, the element can be directly connected or coupled to the other element or the intermediate element can be present. Conversely, when the element is referred to as being "directly connected" or "directly coupled" to another element, the element is not present. Other words used to describe the relationship between the elements should be interpreted in a similar manner (for example, "between" and "directly between", "adjacent" and "directly adjacent".

The method for playing a video disclosed in the present disclosure is applicable to an electronic device, and the electronic device may be a Personal Digital Assistant (PDA), a small touch computer, a notebook computer, a desktop computer, or the like. Please refer to Figure 1 below for the method of playing video.

In addition, as will be understood by those of ordinary skill in the art, "multimedia "Body video" may include video with images and sounds (music), etc., and only "video" is exemplified below to avoid lengthy descriptions.

1 is a flow chart showing a method 100 of playing a video according to an embodiment of the present disclosure. This method can be implemented in a processor of the aforementioned electronic device.

In step S105, the electronic device can receive a video through the network routing cloud or other device, wherein the video is composed of a plurality of frames. The network provides wired and/or wireless internet. The network may also include a local area network (LAN) (eg, an intranet), a wireless local area network (WLAN) or a Wi-Fi network, a third generation (3G), or a fourth Generation (4G) mobile telecommunications network, Wide Area Network (WAN), Internet, Bluetooth, or any suitable combination thereof.

Next, in step S110, the electronic device determines whether each frame is a variation frame. In step S115, the electronic device divides the video into a complex variable segment and a complex non-variable segment according to the determination result. Then, the electronic device establishes a segmentation flag for a first frame in each of the non-variable segments. In S120, the electronic device skips the non-changing segment according to the segmentation flag to play the changed segment in the video.

In an embodiment, the electronic device records the time point of the segmentation flag and the time point at which the non-variable segment ends to the memory of the electronic device.

Moreover, it should be understood that the electronic device performing the method of FIG. 1 can be implemented via any type of computing device, such as computing device 500 described with reference to FIG. 5, as shown in FIG.

Figure 2 illustrates the electronic package in step S110 of Figure 1 in more detail. How to determine whether each frame is a variable frame. 2 is a flow chart showing a method 200 of determining whether each frame is a variation frame according to an embodiment of the present disclosure. This method can be implemented in a processor of the aforementioned electronic device. It should be noted that although in this embodiment, a frame as shown in FIG. 3A is used as an illustration, those skilled in the art may infer that the remaining frames may also be derived from the variation process according to the method.

In step S205, the electronic device converts each frame into a grayscale frame. As shown in FIG. 3B, FIG. 3B is a diagram for converting the frame of FIG. 3A into a gray-scale frame. In step S210, the electronic device determines whether a first difference between the pixel value of the grayscale frame and the grayscale value 0 or a second difference between the grayscale value 255 is less than or equal to a first threshold (threshold ). In an embodiment, the first threshold is 30. When the first difference or the second difference is greater than the first threshold (NO in step S210), in step S235, the electronic device determines that the frame is a frame of variation. In other words, when a grayscale frame converted by one frame is not near full black or all white, the electronic device determines that the frame is a variable frame. The video segment composed of consecutive complex variation frames is a variable segment.

When the first difference or the second difference is less than or equal to the first threshold (YES in step S210), in step S215, the electronic device determines a maximum value of one pixel and one pixel in each frame. Whether a third difference between the minimum values is greater than a second threshold. In an embodiment, the second threshold is less than the first threshold. When the third difference is greater than the second threshold (YES in step S215), in step S220, the electronic device obtains a difference between the pixel value in the grayscale frame and the pixel value of the previous grayscale frame. The absolute value of the value, as shown in Figure 3C. In step S225, the electronic device performs one or two absolute values of the difference values. Binary-conversion (binary-conversion) to produce a binary frame, as shown in Figure 3D. More specifically, the electronic device may compare the absolute value of each difference between the grayscale frame and the previous grayscale frame pixel value with a third threshold to generate a binarized frame, wherein the third threshold may be used. A preset value is set.

In step S230, the electronic device determines whether the maximum value of one of the pixel values in the binarized frame is greater than zero. When the maximum value of the pixel values in the binarized frame is greater than 0 (YES in step S230), in step S235, the electronic device determines that the frame is a changed frame. Otherwise (NO in step S230), in step S240, the electronic device determines that the frame is a non-variable frame.

Returning to step S215, when the third difference is not greater than the second threshold (NO in step S215), in step S240, the electronic device determines that the frame is a non-variable frame. The video segment consisting of consecutive complex unchanging frames is a non-changing segment.

In addition, in an embodiment, after step S225, the electronic device may further erode the binarized frame to remove the problem of the noise doped by the binarized frame, as shown in FIG. 3E.

FIG. 4 is a schematic diagram of playing a video by an operation interface 400 of an electronic device according to an embodiment of the disclosure. As shown in FIG. 4, the operation interface 400 has a first progress bar 410 and a second progress bar 420, wherein the first progress bar 410 is configured to display a first playback progress of the overall video or control the playback progress, and second The progress bar 420 is used to display a second playback progress of the current video played to the changed segment.

In this embodiment, this video is divided into a first progress bar 410. It is divided into a variable section 411, a non-changing section 412, a variable section 413, an unchanged section 414, and a variable section 415, wherein the first frame in the unchanged section 412 and the unchanged section 414 has been established. Segment flags 412a and 414a. The total length of this video is 30.093 seconds, while the video playback progress 430 is playing until the time is 23.191 seconds. In the second progress bar 420, the progress of the video in the changing section 413 is displayed, wherein the total length of the changing section 413 is 16.615 seconds, and the playback progress 430 of the video is playing in the changing section 413 until the time is 15.251 seconds.

When a user wants to skip the no-change section, the user can input a signal to instruct the electronic device to perform a jump play video. For example, when the electronic device plays the time point to the segment flag 412a (for example, the time point at which the change segment 411 ends), it jumps to the time point at which the non-variable segment 412 ends (for example, the change segment 413). At the beginning of the time point, the jump between the changed segments can be realized.

In an embodiment, the width of the video frame is the playback length of the overall video (ie, the first progress bar 410). Similarly, the width of this video frame is also the playback length of the segment (i.e., the second progress bar 420) for this purpose. In addition, when the electronic device performs the jump play operation, if the user wants to control the currently playing change section, the user can use the "right click" of the computer mouse to click any position on the video screen to locate the position. A video frame with a percentage of length played relative to this changed segment. If the user wants to control the entire video file, the user can use the "left button" of the computer mouse to click anywhere on the screen to locate the position of the video relative to the length of the video.

As described above, the method and apparatus for playing a video of the present disclosure can automatically cut into a variable section and a non-changing section for the video file itself, and can repeat or skip playback in multiple sections, and provide the user with any In the segment A quick positioning of a progress bar.

For the embodiments that have been described in this disclosure, the following describes an exemplary operating environment in which embodiments of the present disclosure may be implemented. With specific reference to FIG. 5, FIG. 5 shows an exemplary operating environment for implementing embodiments of the present disclosure, generally considered as computing device 500. The computing device 500 is only one example of a suitable computing environment and is not intended to suggest any limitation as to the scope of use or functionality of the disclosure. Nor should computing device 500 be interpreted as having any dependency or requirement relating to any or combination of the elements shown.

The disclosure may be embodied in a computer code or machine usable instructions, which may be computer executable instructions of a program module, the program modules being executed by a computer or other device, such as a personal digital assistant or other portable device. . Generally, a program module includes routines, programs, objects, components, data structures, etc., and a program module refers to a code that performs a specific task or implements a specific abstract data type. The disclosure can be implemented in a variety of system configurations, including portable devices, consumer electronics, general purpose computers, more specialized computing devices, and the like. The disclosure can also be implemented in a distributed computing environment to process devices connected by a communication network.

Refer to Figure 5. The computing device 500 includes a bus 510, memory 512, one or more processors 514, one or more display elements 516, input/output (I/O) ports 518, inputs/directly/directly coupled to the following devices. An output (I/O) component 520 and an illustrative power supply 522. Bus 510 represents an element (eg, an address bus, a data bus, or a combination thereof) that can be one or more bus bars. Although the respective blocks of FIG. 5 are shown by lines for the sake of brevity, in practice, the boundaries of the respective elements are not specific, for example, the presentation elements of the display device can be regarded as I/O component; the processor can have a memory.

Computing device 500 generally includes a variety of computer readable media. The computer readable medium can be any available media that can be accessed by computing device 500, including both volatile and non-volatile media, removable and non-removable media. By way of example and not limitation, computer readable media may include computer storage media and communication media. Computer readable media also includes volatile and non-volatile media implemented in any method or technique for storing information such as computer readable instructions, data structures, programming modules or other data. Removable and non-removable media. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disc (DVD) or other optical disc storage device, magnetic disk, disk, disk storage A device or other magnetic storage device, or any other medium that can be used to store the required information and that can be accessed by computing device 500. The computer storage media itself does not include signals.

Communication media typically includes computer readable instructions, data structures, program modules or other data in the form of modular data signals such as carrier waves or other transmission mechanisms, and includes any information delivery media. The term "modular data signal" refers to a signal that has one or more feature sets or is modified in such a way as to encode information in the signal. By way of example and not limitation, communication media includes both wired and direct-wired wired and wireless media, such as audio, radio, infrared, and other wireless media. The combination of the above media is included in the scope of computer readable media.

Memory 512 includes computer storage media in the form of volatile and non-volatile memory. Memory can be removable, not moving or can be used for this A combination of the two. Exemplary hardware devices include solid state memory, hard disk drives, optical disk drives, and the like. Computing device 500 includes one or more processors that read data from entities such as memory 512 or I/O component 520. Display element 516 displays a data indication to a user or other device. Exemplary display elements include display devices, speakers, printing elements, vibrating elements, and the like.

I/O port 518 allows computing device 500 to be logically coupled to other devices including I/O component 520, some of which are built-in devices. Exemplary components include microphones, joysticks, gaming stations, satellite signal receivers, scanners, printers, wireless devices, and the like. I/O component 520 can provide a natural user interface for handling gestures, sounds, or other physiological inputs generated by the user. In some examples, these inputs can be passed to a suitable network element for further processing. The NUI can implement speech recognition, touch and stylus recognition, facial recognition, biometric recognition, gesture recognition on the screen and adjacent screens, aerial gestures, head and eye tracking, and touch recognition associated with display by computing device 500. random combination. Computing device 500 can be equipped with a depth camera such as a stereo camera system, an infrared camera system, an RGB camera system, and combinations of these systems to detect and recognize gestures. Additionally, computing device 500 can be equipped with an accelerometer or gyroscope that detects motion. The output of the accelerometer or gyroscope can be provided to the computing device 500 for display to present an immersive augmented reality or virtual reality.

In addition, the processor 514 in the computing device 500 can also execute the programs and instructions in the memory 512 to present the actions and steps described in the above embodiments, or other descriptions in the description.

Any specific sequence or layering of the procedures disclosed herein is by way of example only. Based on design preferences, you must understand the procedural The specific sequence or layering steps can be rearranged within the scope of this document. The accompanying claims are intended to be illustrative of a

The use of ordinal numbers such as "first", "second", "third", etc., used to modify elements in the scope of the patent application does not imply any priority, prioritization, prioritization between elements, or method. The order of the steps, and only used as an identifier to distinguish different elements having the same name (with different ordinal numbers).

Although the disclosure has been described above by way of example, it is not intended to limit the scope of the present invention, and the scope of protection of the present invention can be made without departing from the spirit and scope of the disclosure. This is subject to the definition of the scope of the patent application.

Claims (10)

A method for playing a video, comprising: receiving a video, wherein the video is composed of a plurality of frames; determining whether each frame is a variable frame; and dividing the video into a complex variable segment and a complex non-variable region according to the foregoing determining result. a segment; establishing a segmentation flag for a first frame in each of the unchanged segments; and skipping the non-changing segment according to the segmentation flag to implement playing the changed segment in the video. The method for playing a video according to claim 1, wherein the step of determining whether each frame is a variable frame further comprises: converting each of the frames into a gray-scale frame; and determining a pixel value of the gray-scale frame. Whether a first difference between the first difference value or the gray level value 255 and the gray level value 255 is less than or equal to a first threshold value; and when the first difference value or the second difference value is greater than the above When the first threshold is used, it is determined that the frame is the fluctuation frame. The method for playing a video according to the second aspect of the invention, wherein the step of determining whether each frame is a variable frame further comprises: when the first difference or the second difference is less than or equal to the first threshold, Determining whether a third difference between a maximum value of a pixel and a minimum value of a pixel in each frame is greater than a second threshold; and when the third difference is greater than the second threshold, obtaining the grayscale frame The absolute value of the difference between the pixel value of the previous grayscale frame and the pixel value of the previous grayscale frame; Performing a binarization operation on the absolute value of the difference to generate a binarized frame, and determining whether a maximum value of one of the pixel values in the binarized frame is greater than 0; and determining that the maximum value is greater than 0 when the maximum value is greater than 0 The frame is the above variation frame. The method for playing a video according to claim 3, wherein the second threshold is less than the first threshold. The method for playing a video according to claim 1, further comprising: providing an operation interface for playing the video; wherein the operation mask has a first progress bar and a second progress bar, the first progress bar The first progress bar is used to display a first playback progress of the video, and the second progress bar is used to display a second playback progress of the video to the changed segment. An apparatus for playing video, comprising: one or more processors; and one or more computer storage media storing computer readable instructions, wherein the processor uses the computer storage medium to perform: receiving a video, wherein the video The system is composed of a plurality of frames; determining whether each frame is a variable frame; and dividing the video into a complex variable segment and a complex non-variable segment according to the foregoing determination result; for a first frame in each of the unchanged regions Establishing a segmentation flag; and skipping the non-changing segment according to the segmentation flag to implement playing the changed segment in the video. The apparatus for playing video according to claim 6, wherein the determining, by the processor, whether each frame is a variation frame further comprises: converting each of the frames into a gray-scale frame; and determining pixels of the gray-scale frame. Whether a first difference between the value and the grayscale value 0 or a second difference between the grayscale value 255 is less than or equal to a first threshold; and when the first difference or the second difference is greater than When the first threshold is used, it is determined that the frame is the fluctuation frame. The apparatus for playing a video according to the sixth aspect of the invention, wherein the determining, by the processor, whether each frame is a variation frame further comprises: when the first difference or the second difference is less than or equal to the first threshold Determining whether a third difference between a maximum value of a pixel and a minimum value of a pixel in each frame is greater than a second threshold; and when the third difference is greater than the second threshold, obtaining the grayscale frame The absolute value of the difference between the pixel value of the previous grayscale frame and the pixel value of the previous grayscale frame; performing a binarization operation on the absolute value of the difference value to generate a binarized frame, and determining the pixel in the binarized frame Whether one of the values is greater than 0; and when the maximum value is greater than 0, it is determined that the frame is the above-mentioned variation frame. The apparatus for playing a video according to claim 8, wherein the second threshold is less than the first threshold. The device for playing a video according to the sixth aspect of the invention, wherein the processor is further configured to: provide an operation interface to play the video; The operation mask has a first progress bar and a second progress bar. The first progress bar is used to display a first playback progress of the video, and the second progress bar is used to display the video to the above change. A second playback progress of the segment.