TWI762257B - Method for recommending viewing directions in virtyal reality video and computer readable medium thereof - Google Patents

Abstract

The present invention is a method for recommending the viewing directions in a virtual reality video. During the process of playing a video information on a virtual reality playback device and displaying the virtual reality video by a head-mounted display. A recommended angle from the video information and a viewing angle from the head-mounted display are obtained by the virtual reality playback device. A recommended direction is calculated after comparing the recommended angle and the viewing angle, and the recommended direction is displayed in the virtual reality video. Therefore, the present invention can prompt the direction of the recommended screen when the user watches the virtual reality video, thereby quickly and precisely providing the user with a better viewing effect. A computer-readable medium for implementing a method for recommending viewing directions in a virtual reality movie is further provided in the present invention.

Description

Method and computer readable medium for recommending viewing direction in virtual reality video

The present invention relates to a technology for recommending viewing angles of videos, especially a method for recommending viewing directions in virtual reality videos.

In the past, videos could only be played on the LCD screen of a TV, computer or mobile phone, and only two-dimensional (Two-Dimensional, 2D) videos could be viewed. However, with the advancement of technology, virtual reality (Virtual Reality, VR) The development of equipment is quite mature, users only need to wear VR glasses or related equipment to play VR videos and enjoy the immersive viewing experience brought by VR.

VR video is a VR video in the isometric histogram format played through VR equipment. The video users watch through VR glasses is a video surrounded by a 360° panorama to simulate an immersive experience. According to this, the director of the VR movie also needs to shoot the VR movie according to the isometric histogram format, and in the VR movie, at different time points of the movie, there is usually a specific area that the director wants to recommend for the user to watch, but the user can only watch it. After wearing VR glasses, people are often immersed in the virtual environment of the VR video, or lose their direction and cannot find the specific area immediately, thus missing the wonderful picture presented by the specific area, so that the user cannot feel the importance of the virtual video. place.

Therefore, if a technology for recommending viewing angles of videos can be found, it can provide recommended viewing angles for videos when users watch videos through VR devices, so that users can get prompts immediately during the viewing process, so as to rotate or move to the video viewing angle. The recommended images corresponding to the recommended angles are used to prevent users from missing wonderful images when viewing, which will be the goal of those skilled in the art to strive for solutions.

In view of the above-mentioned problems, the present invention provides a method for recommending a viewing direction in a virtual reality video, which includes: enabling a virtual reality playback device to receive video information, so that the headset is connected to the virtual reality playback device. Play the corresponding virtual reality video; make the virtual reality playback device obtain the recommended angle from the video information and obtain the viewing angle from the head-mounted device when playing the virtual reality video; make the virtual reality play The device compares the recommended angle and the viewing angle to generate recommended direction information according to the comparison result; and causes the virtual reality playback device to display the recommended direction information in the virtual reality video.

In one embodiment, the video information includes an audio and video clip and a recommended angle subtitle file, wherein the video clip is used by the virtual reality playback device to play the virtual reality video in the head-mounted device, and the recommended angle subtitles The file is for the virtual reality playback device to obtain the recommended angle.

In another embodiment, when the virtual reality video is played, acquiring the recommended angle and the viewing angle at each cycle time.

In another embodiment, the cycle time is the inverse of the frame rate of the virtual reality video.

In another embodiment, comparing the recommended angle and the viewing angle includes calculating an angle difference between the recommended angle and the viewing angle, so as to display the recommended direction information when the angle difference exceeds a predetermined angle threshold.

In another embodiment, the step of comparing the recommended angle and the viewing angle includes: calculating the angle difference between the recommended angle and the viewing angle; calculating the same boundary angle of the angle difference; and judging the same angle. Whether the boundary angle exceeds 180 degrees, according to which the recommended direction information is displayed.

In another embodiment, the video information is streaming video or video files stored in the virtual reality playback device.

In another embodiment, the head mounted device is a head mounted display for virtual reality.

In yet another embodiment, the head-mounted device includes a mobile device unit and a head-mounted unit for the mobile device unit to set and provide for wearing, and the mobile device unit is connected with the virtual reality playback device signal to play the Virtual reality video.

The present invention further proposes a computer-readable medium used in a computing device or a computer and storing instructions for executing the method for recommending a viewing direction in a virtual reality video as described above.

To sum up, the method for recommending a viewing direction in a virtual reality video proposed by the present invention is to obtain the recommended angle from the video information and the viewing angle from the headset through the virtual reality playback device, and compare the recommended angle and the viewing angle. The viewing angle is used to generate a comparison result. Accordingly, the virtual reality playback device can display the recommended direction in the virtual reality video according to the comparison result. Therefore, the present invention can prompt the user to recommend the recommended direction in the virtual reality video. The purpose of the screen is to allow the user to rotate the viewing angle to the current focus direction in the video through the recommended direction, so as to avoid missing the important point of the video presentation, so that the user can have a better operating experience when watching the virtual reality video.

10: Virtual reality playback device

20: Headset

30: Video Information

601-608: Process

S101-S104: Steps

S1031-S1035: Steps

S501-S505: Steps

FIG. 1 is a step diagram of a method for recommending a viewing direction in a virtual reality video according to the present invention.

FIG. 2 is an architecture diagram when the method of the present invention is executed.

FIG. 3 is an operational architecture diagram of the method of the present invention.

FIG. 4 is a step diagram of the present invention for performing comparison of angles.

FIG. 5 is a step diagram of another embodiment of the method of the present invention.

Figure 6 is a flow chart for carrying out the method of the present invention.

FIG. 7 is a schematic diagram of the file content of the recommended angle subtitle file of the present invention.

FIG. 8 is a schematic diagram of the relative positional relationship between the viewing angle and the recommended angle of the present invention.

The following describes the technical content of the present invention through specific embodiments, and those skilled in the art can easily understand the advantages and effects of the present invention from the content disclosed in this specification. However, the present invention can also be implemented or applied by other different specific embodiments.

FIG. 1 is a step diagram of a method for recommending a viewing direction in a virtual reality video according to the present invention, and FIG. 2 is an architecture diagram of the method of the present invention during execution. As shown in FIG. 1 and FIG. 2 , the present invention utilizes a virtual reality playback device 10 and a head-mounted device 20 that is signal-connected to the virtual reality playback device 10 and used to display a virtual reality video, so as to execute the virtual reality video Recommended viewing direction method. Specifically, the present invention takes the operation structure of HTTP Live Stream (HLS) video and audio service as an example. The virtual reality playback device 10 of the present invention can process video information 30 in M3U8 format, such as HLS video list The recommended angle is obtained from the video information 30 and the viewing angle is obtained from the head-mounted device 20 , and then the recommended direction and/or its recommended direction information is displayed on the display interface of the head-mounted device 20 worn by the user.

As shown in FIG. 1 and FIG. 2 , in the streaming URL of HLS, the video information 30 includes the main video list M3U8 file, a plurality of TS video clips, and a recommended angle subtitle such as WEBVTT The recommended angle subtitle file stores a plurality of corresponding angles within a certain period of time, that is, the recommended angle. The virtual reality playback device 10 can read the angle information corresponding to the head-mounted device 20 when it faces an orientation, that is, the viewing angle. Accordingly, after comparing the two angles through the virtual reality playback device 10, a recommended direction can be obtained, and then it is determined whether the recommended direction is located at the left or right of the current direction or angle viewed by the headset 20, and finally by Symbols with index properties, such as arrows, are displayed on the display interface of the headset 20 to guide the user to rotate the headset 20 to the recommended angle range, so as to quickly and accurately improve the user's experience in virtual reality. The viewing experience of the environment. The steps described in the present invention are detailed as follows.

As shown in FIG. 1 and FIG. 2 , in step S101 , the virtual reality playback device is made to receive video information, so as to play the corresponding virtual reality video in the headset connected to the signal of the virtual reality playback device. In this step, the video information 30 is received through the virtual reality playback device 10 , and the virtual reality video is played on the head-mounted device 20 connected with the signal of the virtual reality playback device 10 , wherein the video information 30 may be streaming video or audio. The video file stored by the virtual reality playback device 10, that is, the way of playing the video by the virtual reality playback device 10, can be a local video, such as but not limited to MP4, AVI and other file formats. Or play a streaming video format, which is often represented by a URL, such as the aforementioned HLS. In other words, the virtual reality playback device 10 can play the audio and video data stored in the internal memory or an external database, or connect to an audio and video platform, such as Youtube, through a network, and receive the audio and video stream provided by the audio and video platform for playback.

In addition, the head-mounted device 20 can be a head-mounted display of the VR device, which can be connected to the virtual reality playback device 10 with a signal, and the VR video can be displayed and played in the head-mounted device 20 . In addition, the head-mounted device 20 can also be a mobile device unit including, for example, a smart phone, and a head-mounted unit used for setting the mobile device unit and provided for the user to wear. The head-mounted device 20 can communicate with the virtual reality device through the mobile device unit territory The playing device 10 is connected with a signal, so that when the virtual reality playing device 10 plays the virtual reality video, the display screen of the mobile device unit displays the screen of the played virtual reality video.

In step S102 , when the virtual reality video is played, the virtual reality playback device obtains the recommended angle from the video information and the viewing angle from the head-mounted device. This step illustrates that the virtual reality playback device 10 obtains the recommended angle from the video information 30 and obtains the viewing angle from the head-mounted device 20 , wherein the video information 30 includes video clips and recommended angle subtitle files for playing the video when the virtual reality playback device 10 tries to read the video and audio clips and obtain the relative position of the subtitle file, so that the virtual reality playback device 10 plays the video and audio clips in the headset 20 to play the virtual reality video, corresponding to the current clip, and automatically The recommended angle is obtained from the recommended angle subtitle file.

Specifically, the virtual reality video is in the format of an isometric histogram, and is played through the virtual reality playback device 10 as a 360° panorama image corresponding to the isometric histogram. The screen in the device 20 plays part of the image within the range of the screen. When the virtual reality playback device 10 plays a virtual reality video, because the video information includes audio and video clips and corresponding subtitle files, the recommended angle can be recorded in the subtitle file, and when a certain clip is played, the corresponding subtitle file can be used. Obtain the desired recommended angle. In addition, when the user wears the head-mounted device 20 to watch a movie, the screen of the head-mounted device 20 will display a part of the current 360° panoramic image, and the part of the image can be preset to correspond to the panoramic image at a certain angle, Then, the viewing angle of the head-mounted device can be defined. In one embodiment, for an entire panoramic image, it is assumed that the first part of the image is located between 30°-60° on the right-hand side of the panoramic image, and the second part of the image is located between 60°-90° on the right-hand side of the panoramic image. During this time, when the user knows which part of the image the user is viewing and where the viewing center point is the part of the image, the current viewing angle of the head-mounted device can be inferred. In addition, the smart phone is usually equipped with a gyroscope, which can detect the movement or rotation of the smart phone in space. Therefore, in the embodiment in which the head-mounted device has a mobile device unit, it is also The degree of change of the angle can be sensed through the gyroscope of the mobile device unit, which corresponds to the angle in the panoramic image and is used as the viewing angle of the head-mounted device 20 .

In step S103, the virtual reality playback device is made to compare the recommended angle and the viewing angle, so as to generate a recommended direction and/or its recommended direction information according to the comparison result. In this step, the virtual reality playback device 10 compares the recommended angle and the viewing angle, and calculates the difference between the two angles, thereby generating the recommended direction and/or its recommended direction information, that is, the virtual reality playback device 10 passes through Calculate the angle difference between the recommended angle and the viewing angle, determine the orientation information that the user's headset 20 is currently facing, so as to form a recommended direction and/or its recommended direction that the user should turn left or right News.

In step S104, the virtual reality playback device is made to display the recommended direction and/or its recommended direction information in the virtual reality video. This step is for the virtual reality playback device 10 to display the recommended direction and/or its recommended direction information in the headset 20 , that is, the virtual reality playback device 10 displays the recommended direction and/or its recommended direction information in the headset 20 . After comparing the two angles, a comparison result of the recommended rotation to the left or to the right will be obtained, that is, a prompt of the recommended direction will be generated on the display screen of the head-mounted device 20, so that the user can rotate according to the recommended direction to the angle of the recommended content to watch. In this way, the present invention provides convenience for the user to watch movies, and when the user rotates to the angle of the recommended content, based on real-time calculation, when it is determined that the user's viewing angle has fallen within the recommended angle range, the recommended direction is stopped. to avoid disturbing the user's viewing experience.

FIG. 3 is an operational architecture diagram of the method of the present invention. As shown in the figure, the Http Live Stream (HLS) video list M3U8 records the video clip TS and the recommended angle WEBVTT. Further, the WEBVTT subtitle text records the corresponding angle within a period of time. This information can be obtained by virtual On the other hand, the head-mounted device used by the user, such as a virtual reality head-mounted display (VR HMD) or a mobile device, can be viewed based on the user's viewing angle. The viewing angle of the virtual reality video is obtained and sent to the virtual reality playback device. The virtual reality playback device compares the two angles, and then obtains the recommended direction, which is displayed on the display screen of the headset. The recommended direction is displayed in the virtual reality video, which immediately prompts the user to watch the best angle of the content of the video at the moment.

FIG. 4 is a step diagram of performing a comparison of angles according to the present invention. As shown in the figure, it is illustrated that the aforementioned step S103 further includes the following sub-steps.

In step S1031, it is determined whether the time of playing the virtual reality video includes the recommended angle. If yes, go to step S1032; if no, end the round, and do not need to provide a prompt angle. Specifically, during the video playback process, the virtual reality playback device will have an absolute time (PT), which represents the position where the video has been played. By looking for a recommended angle in the subtitle file at this time, the absolute time is The playback time of the virtual reality video displayed on the time axis of the playback, that is, the virtual reality playback device 10 determines the time point of the virtual reality video being played at the time, and searches for the corresponding subtitle file from the recommended angle. If there is no recommended angle, it will end without performing the angle recommendation, which means that there is no recommended angle to provide at that time, that is, no recommended angle means that there is no recommended content in the virtual reality video played at that time. Therefore, the virtual reality playback device 10 There is no need to carry out any procedure. On the contrary, if there is a recommended angle, further calculation of the angle difference is required.

In step S1032, the angle difference between the recommended angle and the viewing angle is calculated. In this step, the virtual reality playback device calculates the angle difference between the recommended angle and the viewing angle, so as to obtain the angle difference. The calculation formula is Sa=Ta-Va, where Sa is the angle difference, Ta is the recommended angle, and Va is the viewing angle. Accordingly, the calculated angle difference is the recommended angle minus the viewing angle to generate the angle difference.

In step S1033, it is determined whether the angle difference exceeds a preset angle threshold to determine whether to display the recommended direction. The main purpose of this step is to determine whether it is necessary to provide a recommendation for the direction of recommendation. In general, the judgment method is to determine whether to provide advice by calculating whether the small angle (Ma) of the two viewing angles exceeds the angle threshold (Na) that needs to provide advice. The calculation formula is as follows:

Ma=360-ABS(Sa), If ABS(Sa)>=180

Ma=ABS(Sa), If ABS(Sa)<180

Among them, ABS(Sa) is the absolute value function of the angle difference. Accordingly, after determining the small angle (Ma), the further decision on whether to provide advice is as follows:

Result=Yes, If Ma>=Na

Result=No, If Ma<Na

That is, when the included angle of the small angle is greater than or equal to the angle threshold for which a suggestion needs to be provided, the suggested direction will be prompted. On the contrary, it means that the difference between the two angles does not exceed the predetermined threshold, and the user does not need to rotate, so there is no need to display the recommended angle.

As above, after calculating the angle difference, it is possible to first determine whether it is necessary to prompt the recommended direction, that is, if the angle difference between the recommended angle and the viewing angle is very small, that is, the angle difference does not exceed the preset angle threshold (for example, 30°, 45° or 60°, etc.), it means that the viewing angle of the user is very close to the recommended angle, and the recommended content can still be seen without special rotation, so there is no need to prompt the recommended rotation direction on the display screen to avoid disturbing the user’s viewing. For the video, on the contrary, if the angle difference exceeds the preset angle threshold, the virtual reality playback device further analyzes the recommended direction of rotation that should be suggested.

In step S1034, the congruent angle of the angle difference is calculated. According to the above, if the recommendation of the recommended direction is required, it will be further calculated to rotate to the left or right of the user. Among them, the same boundary angle (Sa') of the degree difference is first calculated according to the above angle difference, and the calculation The formula is as follows:

Sa'=Sa+360, If Sa<0

Sa’=Sa, If Sa>=0

In step S1035, it is determined whether the co-boundary angle exceeds 180° to display the recommended direction. Further, according to the same boundary angle calculated in the previous step, it is judged that the formula for the recommended direction to the left or the right should be given, and the judgment formula is as follows:

Result=Left, If Sa’>180°

Result=Right, If Sa’<=180°

Accordingly, if the judgment result is that the co-boundary angle is greater than 180°, the recommended rotation direction is leftward, otherwise, the rightward rotation is recommended.

FIG. 5 is a step diagram of another embodiment of the method of the present invention. As shown in the figure, in this embodiment, steps S501, S503-S505 are the same as those described in steps S101-S104 in FIG. 1, which will not be repeated here. The difference between this embodiment and the previous embodiment is that steps S501 are executed after step S501. Step S502, after the virtual reality video is played, the present invention further includes a confirmation cycle, so as to obtain the recommended angle and the viewing angle according to the cycle for angle comparison. In one embodiment, the aforementioned period is the reciprocal of the frame rate of the virtual reality video. For example, the virtual reality playback device obtains the frame rate of the video when playing the virtual reality video according to the video information, It can be used as the time for the confirmation period. For example, the frame rate of the video is 30fps, and the recommended period is to perform an angle comparison every 1/30 millisecond (ms) period to determine whether the recommended direction needs to be provided.

FIG. 6 is a flow chart for carrying out the method of the present invention. As shown in the figure, in process 601, video information is obtained, and the virtual reality playback device of the present invention tries to read the relative position of the video clip and the subtitle file (ie which video clip the subtitle file corresponds to) when playing the video. In the process 602, the recommended angle subtitle file is read, wherein a special character string in the subtitle file, such as a character string starting with "TargetAngle:", indicates that the content of the recommended angle should be included in a certain time range. In process 603, video playback is started. In the process 604, the confirmation period, that is, during the virtual reality video playback process, the virtual reality playback device will have an absolute time, and the absolute time is the time when the virtual reality video has been performed. Further, The virtual reality playback device obtains the frame rate of the video being played according to the video information, and the value of the frame rate can be used as the time of the confirmation period. ms) is executed once. In the process 605, the recommended angle is obtained from the recommended angle subtitle file, that is, according to the current absolute time, the corresponding recommended angle in the recommended angle subtitle file is read. In the process 606, the viewing angle is obtained from the head-mounted device, that is, the current head-mounted device is obtained. The angle of the plane facing, as the viewing angle. In the process 607, compare the angles, wherein, the process of comparing the angles is shown in FIG. 4 in detail. According to this, the virtual reality playback device generates the recommended direction and/or its recommendation by comparing the recommended angle and the viewing angle. Orientation information. In the process 608, the recommended direction and/or its recommended direction information are updated and presented, and the virtual reality playback device displays the recommended direction and/or its recommended direction information on the display interface of the head-mounted device according to the suggestion of the comparison result, that is, on the display interface of the headset. The recommended direction is displayed on the virtual reality video, so that the user can intuitively know which direction to turn while watching. Specifically, it can be displayed in the form of arrows to prompt the recommended direction, that is, display left or right. After the process 608 is executed, the cycle is continuously checked, that is, the cycle time is confirmed to be every few milliseconds, and two angles are continuously obtained and the difference is compared, so as to confirm whether to provide the recommended direction and/or its recommended direction information again.

According to the method for recommending a viewing direction in a virtual reality video according to the present invention, the HLS streaming video and audio are taken as an example for specific description. First, the virtual reality playback device obtains video information to obtain video clips and corresponding subtitle files (WEBVTT). Next, the virtual reality playback device reads the recommended angle subtitle file, wherein the file content of the recommended angle subtitle file is as shown in FIG. 7 , wherein the recommended angle subtitle file contains the keyword string of the recommended angle, namely "TargetAngle" In other embodiments, it can be replaced with other strings according to requirements, and the number behind the string represents the recommended angle within the specified time range. As shown in the figure, taking the number 447 as an example, the range time is 00:23: 07.776 to 00:23:08.616, and the recommended angle is 69°. In addition, taking the number 449 as an example, the range time is 00:43:07.776 to 00:43:08.616, while the recommended angle is 129°, and so on for the rest. Further, the virtual reality playback device confirms the cycle according to the virtual reality video played by the video information, that is, if the frame rate of the video is 30fps, the cycle is 1/30 millisecond.

The present invention is described below through specific embodiments. The VR playback device performs angle comparison according to the obtained recommended angle and viewing angle. When comparing the angles, first confirm whether the corresponding recommended angle is included in the subtitle file. For example, the number 447 in the recommended angle subtitle file is "00". : 23: 07.776-00: 23: 08.616”, the recommended angle is 69°, and for obtaining the viewing angle, please refer to Table 1 below. The viewing angle obtained above is assumed to be 10°. After the calculation of the angle difference, Sa=69°-10°=59°, and then the small angle Ma is calculated as the basis for whether to provide direction suggestions. Among them, ABS (Sa )<180°, so Ma=ABS(Sa)=59°, the angle Na that needs to be suggested in this example is assumed to be 30°, so the angle Ma of the small angle is greater than or equal to the angle Na that needs to be suggested, so the judgment result is Provide advice, on the contrary, if the viewing angle in Table 1 is 10° and the recommended angle is 5°, no advice is required.

Continuing from the above, further calculate the co-boundary angle of the angle difference, as shown in Table 2 below, where the co-boundary angle of the angular difference Sa'=Sa=59°, according to this, since Sa' is less than or equal to 180°, the return pass Right (to the right) prompt suggestion, on the contrary, if it is the first data, the same boundary angle Sa' of the angle difference is greater than 180°, then return Left (to the left).

FIG. 8 is a schematic diagram of the relative positional relationship between the viewing angle and the recommended angle of the present invention. In order to clearly illustrate the above-mentioned example, the drawing is used to illustrate that the user faces an angle of 10°, and the currently recommended angle is 69°. A prompt to the right should be given on the display interface of the user's headset to guide the user to view valuable content angles.

In addition, the present invention also discloses a computer-readable medium, which is applied to a computing device or computer having a processor (such as a CPU, GPU, etc.) and/or memory, stores instructions, and can utilize the computing device or computer The computer-readable medium is executed by a processor and/or a memory, so as to execute the above-mentioned methods and steps when the computer-readable medium is executed.

The units and modules disclosed in the present invention can run in computer equipment or servers including microprocessors and memories. Algorithms, data, programs, etc. are stored in memories or chips. Or the chip loads data or algorithms or programs for data analysis or calculation, which will not be repeated here.

To sum up, the present invention provides a method and a computer-readable medium for recommending a viewing direction in a virtual reality video, using a virtual reality playback device to obtain the recommended angle in the video information and the viewing angle of the head-mounted device at the time of viewing the movie , after comparing the angles, according to the comparison result, a suggestion of the recommended direction is provided on the display interface of the head-mounted device, so as to remind the user of the relative position between the recommended screen in the video information and the direction the user is facing, In this way, the user's viewing effect in the virtual reality can be improved quickly and accurately. In addition, the present invention can be applied to various video and audio service solutions, such as local-end virtual reality video playback or streaming virtual reality video and audio services. Accordingly, as long as the video information to be played has existing subtitle storage formats (such as srt, vtt, webvtt, etc.) etc.), the method of the present invention can be applied to achieve the purpose of recommending a viewing angle. Therefore, the present invention has the following features.

First, the virtual reality playback device of the present invention can read a subtitle file including a recommended angle and obtain the viewing angle when the user watches the VR video, so as to obtain the recommended direction for the user.

Second, the virtual reality playback device of the present invention will compare the angles within any time range, that is, compare the recommended angle provided by the recommended angle subtitle file with the angle that the user is currently facing, on the user interface Displays the recommended angle.

Thirdly, during the guidance process of the present invention, if the user has moved the viewing angle to within the recommended angle range, the prompt will be stopped to reduce interference to the user.

Fourth, the present invention uses the existing subtitle file as a carrier to store the recommended angle content, so the implemented video and audio platform and delivery system can still provide services without modification.

The above-mentioned implementation cases are only illustrative and specific descriptions, rather than limiting the scope of the present invention. Any equivalent modifications or changes made to them do not depart from the spirit and scope of the present invention, and should be included in the patent of this case. in the range.

S101-S104: Steps

Claims (9)

A method for recommending a viewing direction in a virtual reality video, comprising: making a virtual reality playback device receive video information, so as to play a corresponding virtual reality video in a headset connected with a signal of the virtual reality playback device ; make the virtual reality playback device obtain the recommended angle from the video information and obtain the viewing angle from the head-mounted device when playing the virtual reality video; make the virtual reality playback device compare the recommended angle with the viewing angle viewing angle, so as to generate recommended direction information according to the comparison result; and make the virtual reality playback device display the recommended direction information in the virtual reality video, wherein the video information includes video clips and recommended angle subtitle files, Wherein, the video clip is for the virtual reality playback device to play the virtual reality video in the head-mounted device, and the recommended angle subtitle file is for the virtual reality playback device to obtain the recommended angle. A method for recommending a viewing direction in a virtual reality video, comprising: making a virtual reality playback device receive video information, so as to play a corresponding virtual reality video in a headset connected with a signal of the virtual reality playback device ; Make the virtual reality playback device obtain the recommended angle from the video information and obtain the viewing angle from the head-mounted device when playing the virtual reality video, wherein, when playing the virtual reality video, every cycle Time to obtain the recommended angle and the viewing angle; make the virtual reality playback device compare the recommended angle and the viewing angle to generate recommended direction information according to the comparison result; and make the virtual reality playback device the recommended direction information shown in the virtual reality video. The method for recommending a viewing direction in a virtual reality video according to claim 2, wherein the cycle time is the inverse of the frame rate of the virtual reality video. A method for recommending a viewing direction in a virtual reality video, comprising: making a virtual reality playback device receive video information, so as to play a corresponding virtual reality video in a headset connected with a signal of the virtual reality playback device ; make the virtual reality playback device obtain the recommended angle from the video information and obtain the viewing angle from the head-mounted device when playing the virtual reality video; make the virtual reality playback device compare the recommended angle with the viewing angle a viewing angle to generate recommended direction information according to the comparison result; and causing the virtual reality playback device to display the recommended direction information in the virtual reality video, wherein comparing the recommended angle and the viewing angle includes calculating the The angle difference between the recommended angle and the viewing angle, so that when the angle difference exceeds a preset angle threshold, the recommended direction information is displayed. A method for recommending a viewing direction in a virtual reality video, comprising: making a virtual reality playback device receive video information, so as to play a corresponding virtual reality video in a headset connected with a signal of the virtual reality playback device ; make the virtual reality playback device obtain the recommended angle from the video information and obtain the viewing angle from the head-mounted device when playing the virtual reality video; make the virtual reality playback device compare the recommended angle with the viewing angle a viewing angle, so as to generate recommended direction information according to the comparison result; and causing the virtual reality playback device to display the recommended direction information in the virtual reality video, wherein the step of comparing the recommended angle and the viewing angle, The system includes the following sub-steps: calculating the angle difference between the recommended angle and the viewing angle; Calculate the congruent angle of the angle difference; and determine whether the congruent angle exceeds 180 degrees, so as to display the recommended direction information accordingly. A method for recommending a viewing direction in a virtual reality video, comprising: making a virtual reality playback device receive video information, so as to play a corresponding virtual reality video in a headset connected with a signal of the virtual reality playback device ; make the virtual reality playback device obtain the recommended angle from the video information and obtain the viewing angle from the head-mounted device when playing the virtual reality video; make the virtual reality playback device compare the recommended angle with the viewing angle viewing angle, so as to generate recommended direction information according to the comparison result; and make the virtual reality playback device display the recommended direction information in the virtual reality video, wherein the video information is streaming video or the virtual reality Play the video file in the device's internal memory. A method for recommending a viewing direction in a virtual reality video, comprising: making a virtual reality playback device receive video information, so as to play a corresponding virtual reality video in a headset connected with a signal of the virtual reality playback device ; make the virtual reality playback device obtain the recommended angle from the video information and obtain the viewing angle from the head-mounted device when playing the virtual reality video; make the virtual reality playback device compare the recommended angle with the viewing angle viewing angle, so as to generate recommended direction information according to the comparison result; and make the virtual reality playback device display the recommended direction information in the virtual reality video, wherein the head-mounted device is a head-mounted device for virtual reality type display. A method for recommending a viewing direction in a virtual reality video, comprising: Make the virtual reality playback device receive video information, so as to play the corresponding virtual reality video in the headset connected with the signal of the virtual reality playback device; make the virtual reality playback device play the virtual reality video when , obtain the recommended angle from the video information and obtain the viewing angle from the head-mounted device; make the virtual reality playback device compare the recommended angle and the viewing angle to generate recommended direction information according to the comparison result; The virtual reality playback device displays the recommended direction information in the virtual reality video, wherein the head-mounted device includes a mobile device unit and a head-mounted unit for the mobile device unit to set and provide for wearing, and the mobile device unit It is connected with the virtual reality playback device signal to play the virtual reality video. A computer-readable medium used in a computing device or a computer and storing instructions for executing the method for recommending a viewing direction in a virtual reality video as described in any one of claims 1 to 8.

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