CN115396731A - Panoramic video playing method and device, electronic equipment and readable storage medium - Google Patents
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Abstract
The disclosure provides a method and a device for playing a panoramic video, an electronic device and a readable storage medium, wherein the method comprises the following steps: acquiring at least two code rates corresponding to high-definition video fragments of the panoramic video as high-definition window code rates; the high-definition video fragments are parts of high-definition video content with first resolution of the panoramic video to be played in a playing window; selecting one of the high-definition window code rates as a current window code rate; downloading the high-definition video fragments corresponding to the current window code rate, and reselecting the current window code rate according to the downloading speed of the high-definition video fragments according to the set frequency in the downloading process; and playing the downloaded high-definition video fragments in the playing window.
Description
Technical Field
The present disclosure relates to the field of video processing technologies, and in particular, to a method and an apparatus for playing a panoramic video, an electronic device, and a readable storage medium.
Background
A panoramic video is a video obtained by shooting a scene in 360 degrees in all directions (only a 180-degree range or a 270-degree range may be recorded in some cases) by using a 3D camera, and each video frame in the video is a 360-degree (180-degree or 270-degree) panoramic image.
In the prior art, a panoramic video is usually encoded according to a plurality of code rates in advance, and when a user plays the panoramic video through a virtual reality device, the panoramic video with the appropriate code rate is manually selected to be downloaded and played according to the actual bandwidth of the user or the current playing pause condition.
However, the playing mode of the panoramic video with the code rate manually selected is complex to operate and long in time consumption, and the code rate most matched with the current bandwidth cannot be quickly and accurately selected, so that the user experience is poor.
Disclosure of Invention
It is an object of embodiments of the present disclosure to provide a new solution to at least one of the above problems.
According to a first aspect of the present disclosure, a method for playing a panoramic video is provided, including:
acquiring at least two code rates corresponding to high-definition video fragments of the panoramic video as high-definition window code rates; the high-definition video fragments are parts of high-definition video content with first resolution of the panoramic video to be played in a playing window;
selecting one of the high-definition window code rates as a current window code rate;
downloading the high-definition video fragments corresponding to the current window code rate, and reselecting the current window code rate according to the downloading speed of the high-definition video fragments according to the set frequency in the downloading process;
and playing the downloaded high-definition video fragments in the playing window.
Optionally, the method further includes:
and downloading standard definition video content of the second resolution of the panoramic video, and reselecting the current window code rate according to the standard definition code rate of the standard definition video content.
Optionally, the high definition window code rate includes a first window code rate and a second window code rate, where the first window code rate is greater than the second window code rate;
the reselecting the current window code rate according to the standard definition code rate of the standard definition video content comprises the following steps:
determining the sum of the first window code rate and the standard definition code rate as a first sum; determining the sum of the second window code rate and the standard definition code rate as a second sum;
comparing said download speed to a set multiple of said first sum and said download speed to a set multiple of said second sum;
and reselecting the code rate of the current window according to the comparison result.
Optionally, the selecting the current window code rate according to the comparison result includes:
under the condition that the downloading speed is greater than or equal to the first sum set multiple, selecting the first window code rate as the current window code rate;
and selecting the second window code rate as the current window code rate under the condition that the downloading speed is less than the set multiple of the first sum and is more than or equal to the set multiple of the second sum.
Optionally, the second window code rate is a minimum high definition window code rate, and the method further includes:
and under the condition that the downloading speed is less than the second set multiple, stopping downloading the high-definition video fragments and the standard-definition video content, and reminding a user that the bandwidth is too small.
Optionally, the obtaining at least two code rates corresponding to the high definition video segments as the high definition window code rate includes:
acquiring at least two high-definition code rates of the high-definition video content;
acquiring a first preset area of the playing window and a second preset area of the panoramic video;
and obtaining at least two high-definition window code rates according to the first area, the second area and the at least two high-definition code rates.
Optionally, the method includes:
and playing the standard definition video content on the lower layer of the high definition video fragment.
According to a second aspect of the present disclosure, there is provided a playing apparatus of a panoramic video, including:
the acquisition module is used for acquiring at least two code rates corresponding to high-definition video fragments of the panoramic video as high-definition window code rates; the high-definition video fragments are parts of high-definition video content with first resolution of the panoramic video to be played in a playing window;
the selecting module is used for selecting one of the high-definition window code rates as a current window code rate;
the downloading module is used for downloading the high-definition video fragments corresponding to the current window code rate and reselecting the current window code rate according to the downloading speed of the high-definition video fragments according to the set frequency in the downloading process;
and the playing module is used for playing the downloaded high-definition video fragments in the playing window.
According to a third aspect of the present disclosure, there is provided an electronic device comprising:
a memory for storing executable computer instructions;
a processor for executing the method for playing panoramic video according to the first aspect of the present disclosure, according to the control of the executable computer instructions.
According to a fourth aspect of the present disclosure, there is provided a computer readable storage medium having stored thereon computer instructions which, when executed by a processor, perform the method for playing a panoramic video according to the first aspect of the present disclosure.
The method has the beneficial effects that when the panoramic video is played through the method disclosed by the embodiment of the disclosure, in the downloading process of the high-definition video fragments of the panoramic video, the code rate of the high-definition video fragments is adaptively selected according to the set frequency and the downloading speed, so that the high-definition video fragments with the code rate most suitable for the current bandwidth are downloaded, and the watching experience of a user on the panoramic video can be improved. In addition, the setting multiple larger than 1 is set to select the code rate of the current window, so that a certain redundant bandwidth can be increased, and the panoramic video can be smoothly played under the condition of ensuring code rate jitter. In addition, the downloaded high-definition video fragments are played in the playing window, and under the condition that standard-definition video content is played on the lower layer of the high-definition video fragments, on the basis that normal transmission of the panoramic video is guaranteed, the user can not feel dizzy, and watching experience of the user on the panoramic video is improved.
Other features of the present disclosure and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the disclosure and together with the description, serve to explain the principles of the disclosure.
Fig. 1 is a block diagram of a hardware configuration of an electronic device that can be used to implement a playback method of a panoramic video of an embodiment;
FIG. 2 is a flow diagram illustrating a method for playing panoramic video, according to one embodiment;
fig. 3 is a flowchart illustrating a method of playing a panoramic video according to an example;
FIG. 4 is a functional block diagram of a playback device for panoramic video according to one embodiment;
FIG. 5 is a functional block diagram of an electronic device according to one embodiment.
Detailed Description
Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present disclosure unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the disclosure, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
< hardware configuration >
Fig. 1 is a block diagram showing a hardware configuration of an electronic apparatus 1000 that can implement an embodiment of the present disclosure.
As shown in fig. 1, the electronic device 1000 may include a processor 1100, a memory 1200, an interface device 1300, a communication device 1400, a display device 1500, an input device 1600, a microphone 1700, and a speaker 1800. The processor 1100 may include, but is not limited to, a central processing unit CPU, a microprocessor MCU, or the like. The memory 1200 includes, for example, a ROM (read only memory), a RAM (random access memory), a nonvolatile memory such as a hard disk, and the like. The interface device 1300 includes, for example, various bus interfaces such as a serial bus interface (including a USB interface), a parallel bus interface, and the like. Communication device 1400 is capable of wired or wireless communication, for example. The display device 1500 is, for example, a liquid crystal display, an LED display, a touch display, or the like. The input device 1600 includes, for example, a touch screen, a keyboard, a handle, and the like. The microphone 1700 may be used for inputting voice information. The speaker 1800 may be used to output voice information.
The electronic device 1000 may be, for example, a mobile phone, a laptop, a tablet computer, a palmtop computer, and the like, the electronic device 1000 may also be, for example, a VR (Virtual Reality) device, an AR (Augmented Reality) device, an MR (Mixed Reality) device, and the like, the electronic device 1000 may also be, for example, a server, and the embodiment of the present disclosure does not limit this.
In this embodiment, the memory 1200 of the electronic device 1000 is configured to store instructions for controlling the processor 1100 to operate so as to implement or support implementation of the playback method of panoramic video according to any of the embodiments. The skilled person can design the instructions according to the solution disclosed in the present specification. How the instructions control the operation of the processor is well known in the art and will not be described in detail herein.
It should be understood by those skilled in the art that although a plurality of devices of the electronic apparatus 1000 are illustrated in fig. 1, the electronic apparatus 1000 of the embodiment of the present specification may refer to only some of the devices, and may also include other devices, which are not limited herein.
The electronic device 1000 shown in fig. 1 is merely illustrative and is in no way intended to limit the description, its applications, or uses.
Various embodiments and examples according to the present disclosure are described below with reference to the drawings.
< method examples >
Please refer to fig. 2, which is a flowchart illustrating a method for playing a panoramic video according to an embodiment of the present disclosure. The method for playing the panoramic video is implemented by the electronic device 1000 shown in fig. 1, and as shown in fig. 2, the method for playing the panoramic video may include the following steps S2100 to S2400.
Step S2100, acquiring at least two code rates corresponding to high-definition video fragments of the panoramic video as high-definition window code rates.
The high-definition video fragment is a part of the panoramic video, which is to be played in a playing window, of the high-definition video content with the first resolution.
In this embodiment, the panoramic video may be a 360-degree video captured by a panoramic camera, or may be a 180-degree video captured by a panoramic camera. Alternatively, the resolution of the panoramic video may be 8K resolution, i.e., 7680 pixels in length and 3840 pixels in width. The panoramic video may be, for example, a landscape type video.
The panoramic video can be played through an electronic device specially used for playing the panoramic video. Such as a mobile phone, a laptop, a tablet, a palmtop, a VR device, an AR device, and an MR device. The panoramic video may be played using a Field of View (FOV) approach. More specifically, the panoramic video is divided into a plurality of viewing angles, and a user can select a certain viewing angle to view, and the user can view video content of the viewing angle. Illustratively, when a panoramic video is played in a FOV manner, a user can only see the video content within a playing window (i.e., a View Port), i.e., view a portion of the panoramic video.
The position of the playing window may be initialized before the panoramic video begins to play. For example, the play window is controlled to move to the central area of the panoramic video. And then, adjusting the position of the playing window according to the operation of the user, so that the user can watch the panoramic video at different viewing angles.
In one embodiment of the present disclosure, the panoramic video may include at least high definition video content of a first resolution, and the high definition video content is encoded in advance according to at least two high definition code rates, respectively.
Further, the panoramic video may include two parts, namely high definition video content with a first resolution and standard definition video content with a second resolution, the standard definition video content is encoded in advance according to standard definition code rates, and the high definition video content is encoded according to at least two high definition code rates. Wherein the first resolution is greater than the second resolution. For example, the first resolution may be 8K, the second resolution may be 720P; alternatively, the first resolution may be 8K and the second resolution may be 4K; alternatively, the first resolution may be 4K and the second resolution may be 1080P.
For example, the standard definition video content may be encoded according to a standard definition code rate SD _ bw, and the high definition video content may be encoded according to high definition code rates HD _50m, HD _30m, and HD _10m, respectively.
In an embodiment of the present disclosure, obtaining at least two code rates corresponding to the high definition video slices as the high definition window code rate may include the following steps S2110 to S2130:
step S2110, acquiring at least two high definition bit rates of the high definition video content.
The high definition code rate in this embodiment is a code rate for encoding high definition video content in advance.
Step S2120, a first area of a preset playing window and a second area of the panoramic video are obtained.
In this embodiment, the first area may be set in advance according to the angle of view of the play window, and the second area may be set in advance according to the shooting angle of the panoramic video.
Step S2130, obtaining at least two high definition window code rates according to the first area, the second area, and the at least two high definition code rates.
In this embodiment, the ratio of the first area to the second area may be calculated first, and then the product of the ratio and the high definition code rate is determined to obtain the high definition window code rate. And obtaining a corresponding high-definition window code rate according to each high-definition code rate.
For example, the first area is S1, the second area is S2, when the high definition code rate is HD _50m, the high definition window code rate HDV _50m = S1/S2 × HD _50m can be obtained, when the high definition code rate is HD _30m, the high definition window code rate HDV _30m = S1/S2 × HD _30m can be obtained, and when the high definition code rate is HD _10m, the high definition window code rate HDV _10m = S1/S2 × HD _10m can be obtained.
Step S2200 is selecting one of the high definition window code rates as the current window code rate.
In one embodiment of the present disclosure, one of the at least two high definition window rates may be randomly selected as the current window rate.
In another embodiment of the present disclosure, at least two high definition window code rates may be sorted in an ascending order or a descending order to obtain a sorting value (1-N) of each high definition window code rate, and then one high definition window code rate with the sorting value being a designated value is selected as the current window code rate, where the designated value may be any one of 1-N.
Step S2300, downloading the high definition video fragment corresponding to the current window code rate, and reselecting the current window code rate according to the downloading speed of the high definition video fragment according to the set frequency in the downloading process.
The set frequency may be set in advance according to an application scenario or a specific requirement. For example, the set frequency may be 0.2Hz, i.e., step S2300 is performed every 5 seconds.
In this embodiment, the high definition video segment may be determined according to the position of the playing window. The video corresponding to the arbitrary playing window may be a high definition video clip with at least two high definition window bit rates.
In this embodiment, when the high definition video segment is not downloaded, the downloading speed of the high definition video segment cannot be determined, so that the corresponding high definition video segment may be downloaded according to the current window code rate selected in step S2200, and then the downloading speed of the high definition video segment within the past set time is determined after the set time elapses, and one of at least two high definition window code rates is selected as the current window code rate again according to the downloading speed. Wherein the set time may be determined according to the set frequency, and in case that the set frequency is 0.2Hz, the set time may be 5 seconds.
In one example, the download speed may be an average speed in a past setting time, a minimum speed in the past setting time, or a maximum speed in the past setting time.
For example, the detection frequency of the download speed may be the same as the set frequency, and then, in a case where the download speed is obtained each time, one of the at least two high definition window code rates may be selected again as the current window code rate according to the download speed.
In the first embodiment of the present disclosure, the at least two high definition window code rates may include a first window code rate and a second window code rate, and the first window code rate is greater than the second window code rate, so that the current window code rate is reselected according to the set frequency and the download speed of the high definition video segment in the download process, which may include the following steps S2311 to S2313:
step S2311, the download speed is compared with the first window code rate and the second window code rate, respectively.
Step S2312, when the download speed is greater than or equal to the set multiple of the first window code rate, selecting the first window code rate as the current window code rate.
Step S2313, selecting the second window code rate as the current window code rate when the download speed is less than the set multiple of the first window code rate and greater than or equal to the set multiple of the second window code rate.
In the present embodiment, the setting multiple may be a positive number set in advance according to an application scenario or a specific requirement, and for example, the setting multiple may be 1.2. Under the condition that the set multiple is larger than 1, the code rate of the current window is selected based on the set multiple, certain redundant bandwidth can be increased, and the panoramic video can be smoothly played under the condition that the code rate is guaranteed to be jittered.
On the basis, if the second window code rate is the minimum high-definition window code rate, the method can further comprise the following steps:
and under the condition that the downloading speed is lower than the second window code rate, stopping downloading the high-definition video fragments and reminding a user that the bandwidth is too small.
For example, the multiple is set to be a, the high definition window bitrate can include HDV _50m, HDV _30m, and HDV _10m from large to small, and the download speed is BW _ cur, and then, under the condition that BW _ cur is greater than or equal to a × HDV _50m, HDV _50m can be used as the current window bitrate; under the condition that A is HDV _50m, BW _ cur is more than A is HDV _30m, the HDV _30m can be used as the current window code rate; under the condition that A is HDV _30m and BW _ cur are more than or equal to A is HDV _10m, the HDV _10m can be used as the current window code rate; in the case of BW _ cur < a × HDV _10m, it may be to stop downloading the high definition video slice and remind the user that the bandwidth is too small.
In a second embodiment of the present disclosure, the method may further include: and downloading standard definition video content of the panoramic video, and reselecting the current window code rate according to the standard definition code rate of the standard definition video content.
In this embodiment, standard-definition video content may be played on a lower layer of the high-definition video segment, so that the high-definition video content is played in the playing window, and the standard-definition video content is played around the playing window. Therefore, the transmission code rate of the panoramic video can be reduced, the bandwidth requirement for watching the VR video is greatly reduced, and the effective utilization rate of the bandwidth is improved.
On this basis, the at least two high definition window code rates may include a first window code rate and a second window code rate, and the first window code rate is greater than the second window code rate, so that the current window code rate is reselected according to the set frequency and the download speed of the high definition video segment in the download process, which may include steps S2321 to S2323 as follows:
step S2321, determining the sum of the first window code rate and the standard definition code rate as a first sum; and determining the sum of the second window code rate and the standard definition code rate as a second sum.
Step S2322, the download speed is compared with the set multiple of the first sum, and the download speed is compared with the set multiple of the second sum.
Step S2323, reselecting the code rate of the current window according to the comparison result.
Specifically, the first window code rate may be selected as the current window code rate when the download speed is greater than or equal to the first sum set multiple; and selecting the second window code rate as the current window code rate under the condition that the downloading speed is less than the set multiple of the first sum and is more than or equal to the set multiple of the second sum.
Under the condition that the second window code rate is the minimum high-definition window code rate, the method can further comprise the following steps: and under the condition that the downloading speed is less than the second sum set multiple, stopping downloading the high-definition video fragments and the standard-definition video content, and reminding the user that the bandwidth is too small.
For example, the multiple is set to be a, the high definition window code rate may include HDV _50m, HDV _30m, and HDV _10m from large to small, and the download speed is BW _ cur, then, when BW _ cur is greater than or equal to a (SD _ BW + HDV _50 m), HDV _50m may be used as the current window code rate; under the condition that A is greater than BW cur which is greater than A (SD _ BW + HDV _30 m), the HDV _30m can be used as the current window code rate; under the condition that A is (SD _ BW + HDV _30 m) > BW _ cur is more than or equal to A (SD _ BW + HDV _10 m), the HDV _10m can be used as the current window code rate; in the case of BW _ cur < a (SD _ BW + HDV _10 m), it may be to stop downloading the high definition video slice and remind the user that the bandwidth is too small.
And step S2400, playing the downloaded high-definition video fragments in a playing window.
In this embodiment, the downloaded high-definition video fragments are played in the playing window, and under the condition that the standard-definition video content is played on the lower layer of the high-definition video fragments, on the basis of ensuring the normal transmission of the panoramic video, the user can not feel dizzy, and the watching experience of the user on the panoramic video is improved.
The following describes a method for playing a panoramic video by using a specific example. Referring to fig. 3, the method for playing the panoramic video includes the following steps.
Step S3001, acquiring high definition bit rates HD _50m, HD _30m, and HD _10m of the high definition video content of the panoramic video.
Step S3002, obtain a first area of a preset playing window and a second area of the panoramic video.
Step S3003, obtaining high definition window bit rates HDV _50m, HDV _30m, and HDV _10m corresponding to the high definition video slices of the panoramic video according to the first area, the second area, and the high definition bit rates HD _50m, HD _30m, and HD _10m.
Step S3004, the high definition window code rate HDV _30m is used as the current window code rate.
And step S3005, downloading and playing the standard definition video content of the standard definition code rate SD _ bw of the panoramic video and the high definition video fragments corresponding to the current window code rate.
Step S3006, detecting whether the downloading of the panoramic video is finished, if yes, finishing; if not, step S3007 is executed.
Step S3007, determining the download speed BW _ cur of the high definition video slice in the past set time every set time.
Step S3008, comparing whether the download speed BW _ cur is greater than or equal to 1.2 × (SD _ BW + HDV _50 m), if yes, executing step S3009; if not, step S3010 is executed.
Step S3009, the high definition window code rate HDV _50m is used as the current window code rate.
Step S3010, compare whether the download speed BW _ cur is greater than or equal to 1.2 × (SD _ BW + HDV _30 m), if yes, execute step S3011; if not, step S3012 is executed.
In step S3011, the high definition window bitrate HDV _30m is used as the current window bitrate.
Step S3012, comparing whether the download speed BW _ cur is greater than or equal to 1.2 × (SD _ BW + HDV _10 m), if yes, executing step S3013; if not, step S3014 is executed.
Step S3013, the HDV _10m of the high definition window code rate is taken as the current window code rate.
And step S3014, stopping downloading the high-definition video fragments and the standard-definition video content, and reminding the user that the bandwidth is too small.
When the panoramic video is played by the method of the embodiment of the disclosure, in the downloading process of the high-definition video fragments of the panoramic video, the code rate of the high-definition video fragments is adaptively selected according to the set frequency and the downloading speed, so as to download the high-definition video fragments with the code rate most suitable for the current bandwidth, and the watching experience of a user on the panoramic video can be improved. In addition, the setting multiple larger than 1 is set to select the code rate of the current window, so that a certain redundant bandwidth can be increased, and the panoramic video can be smoothly played under the condition of ensuring code rate jitter. In addition, the downloaded high-definition video fragments are played in the playing window, and under the condition that standard-definition video content is played on the lower layer of the high-definition video fragments, on the basis that normal transmission of the panoramic video is guaranteed, the user can not feel dizzy, and watching experience of the user on the panoramic video is improved.
< apparatus embodiment >
Referring to fig. 4, an embodiment of the present disclosure provides a device for playing a panoramic video, as shown in fig. 4, the device 400 for playing a panoramic video may include an obtaining module 410, a selecting module 420, a downloading module 430, and a playing module 440. The obtaining module 410 is configured to obtain at least two code rates corresponding to high definition video segments of a panoramic video as high definition window code rates; the high-definition video fragment is a part of the panoramic video, which is to be played in a playing window, of high-definition video content with a first resolution; the selecting module 420 is configured to select one of the high definition window bit rates as a current window bit rate; the downloading module 430 is configured to download the high definition video segments corresponding to the current window code rate, and reselect the current window code rate according to a set frequency and a downloading speed of the high definition video segments in a downloading process; the playing module 440 is configured to play the downloaded high definition video segment in a playing window.
In an embodiment of the present disclosure, the apparatus 400 for playing panoramic video may further include:
the downloading module 430 may further re-select the current window bitrate according to the standard definition bitrate of the standard definition video content.
In one embodiment of the present disclosure, the high definition window code rate includes a first window code rate and a second window code rate, wherein the first window code rate is greater than the second window code rate;
the download module 430 is further configured to:
determining the sum of the first window code rate and the standard definition code rate as a first sum; determining the sum of the second window code rate and the standard definition code rate as a second sum;
comparing the download speed with a set multiple of the first sum and a set multiple of the download speed with the second sum;
and reselecting the code rate of the current window according to the comparison result.
In an embodiment of the present disclosure, selecting the current window bitrate according to the comparison result includes:
under the condition that the downloading speed is more than or equal to the set multiple of the first sum, selecting a first window code rate as a current window code rate;
and selecting the second window code rate as the current window code rate under the condition that the downloading speed is less than the set multiple of the first sum and is more than or equal to the set multiple of the second sum.
In an embodiment of the disclosure, the second window bitrate is a minimum high definition window bitrate, and the playing apparatus 400 of the panoramic video may further include:
and the module is used for stopping downloading the high-definition video fragments and the standard-definition video content and reminding the user of the excessively small bandwidth under the condition that the downloading speed is less than the set multiple of the second sum.
In an embodiment of the present disclosure, the obtaining module 410 may be further configured to:
acquiring at least two high-definition code rates of high-definition video content;
acquiring a first area of a preset playing window and a second area of the panoramic video;
and obtaining at least two high-definition window code rates according to the first area, the second area and the at least two high-definition code rates.
In an embodiment of the present disclosure, the apparatus 400 for playing panoramic video may further include:
and the module is used for playing the standard definition video content on the lower layer of the high definition video fragment.
It will be understood by those skilled in the art that the playing apparatus 400 of the panoramic video may be implemented in various ways. For example, the playback apparatus 400 of panoramic video may be implemented by instructing a configuration processor. For example, the instructions may be stored in ROM and read from ROM into a programmable device when the device is started to implement the playback apparatus 400 of panoramic video. For example, the playing apparatus 400 of the panoramic video may be solidified into a dedicated device (e.g., ASIC). The playing apparatus 400 of the panoramic video may be divided into units independent of each other, or they may be combined together. The playing apparatus 400 of the panoramic video may be implemented by one of the various implementations described above, or may be implemented by a combination of two or more of the various implementations described above.
In this embodiment, the playing apparatus 400 of the panoramic video may have various implementation forms, for example, the playing apparatus 400 of the panoramic video may be any functional module running in a software product or an application program that provides a playing service of the panoramic video, or a peripheral insert, a plug-in, a patch, etc. of the software product or the application program, and may also be the software product or the application program itself.
< apparatus embodiment >
Referring to fig. 5, an embodiment of the present disclosure further provides an electronic device. As shown in fig. 5, the electronic device 500 includes a memory 510 and a processor 520.
The memory 510 may be used to store executable computer instructions.
The processor 520 may be configured to execute the method for playing panoramic video according to the embodiment of the present disclosure, according to the control of the executable computer instructions.
The electronic device 500 may be the electronic device 1000 shown in fig. 1, or may be a device having another hardware structure, which is not limited herein. The electronic device 500 may be, for example, a mobile phone, a laptop, a tablet computer, a palmtop computer, and the like, the electronic device 500 may also be, for example, a VR device, an AR device, an MR device, and the like, the electronic device 500 may also be, for example, a server, and the embodiment of the present disclosure is not limited thereto.
In further embodiments, the electronic device 500 may include the above playback apparatus 400 for panoramic video.
In one embodiment, the above modules of the playing apparatus 400 for panoramic video can be implemented by the processor 520 executing computer instructions stored in the memory 510.
When the panoramic video is played according to the embodiment of the disclosure, in the downloading process of the high-definition video fragments of the panoramic video, the code rate of the high-definition video fragments is adaptively selected according to the set frequency and the downloading speed, so as to download the high-definition video fragments with the code rate most suitable for the current bandwidth, thereby improving the watching experience of the user on the panoramic video. In addition, the setting multiple larger than 1 is set to select the code rate of the current window, so that a certain redundant bandwidth can be increased, and the panoramic video can be smoothly played under the condition of ensuring code rate jitter. In addition, the downloaded high-definition video fragments are played in the playing window, and under the condition that standard-definition video content is played on the lower layer of the high-definition video fragments, on the basis that normal transmission of the panoramic video is guaranteed, the user can not feel dizzy, and watching experience of the user on the panoramic video is improved.
< readable storage Medium embodiment >
In this embodiment, there is also provided a readable storage medium having stored thereon a computer program which, when executed by a processor, implements a method of playing a panoramic video as any of the embodiments of the present disclosure.
The above embodiments mainly focus on differences from other embodiments, but it should be clear to those skilled in the art that the above embodiments can be used alone or in combination with each other as needed.
The embodiments in the present disclosure are described in a progressive manner, and the same and similar parts among the embodiments can be referred to each other, and each embodiment focuses on the differences from the other embodiments, but it should be clear to those skilled in the art that the embodiments described above can be used alone or in combination with each other as needed. In addition, for the device embodiment, since it corresponds to the method embodiment, the description is relatively simple, and for relevant points, refer to the description of the corresponding parts of the method embodiment. The system embodiments described above are merely illustrative, in that modules illustrated as separate components may or may not be physically separate.
The present disclosure may be an apparatus, method, and/or computer program product. The computer program product may include a computer-readable storage medium having computer-readable program instructions embodied thereon for causing a processor to implement various aspects of the present disclosure.
The computer readable storage medium may be a tangible device that can hold and store the instructions for use by the instruction execution device. The computer readable storage medium may be, for example, but not limited to, an electronic memory device, a magnetic memory device, an optical memory device, an electromagnetic memory device, a semiconductor memory device, or any suitable combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), a Static Random Access Memory (SRAM), a portable compact disc read-only memory (CD-ROM), a Digital Versatile Disc (DVD), a memory stick, a floppy disk, a mechanical coding device, such as punch cards or in-groove projection structures having instructions stored thereon, and any suitable combination of the foregoing. Computer-readable storage media as used herein is not to be interpreted as a transitory signal per se, such as a radio wave or other freely propagating electromagnetic wave, an electromagnetic wave propagating through a waveguide or other transmission medium (e.g., optical pulses through a fiber optic cable), or an electrical signal transmitted through an electrical wire.
The computer-readable program instructions described herein may be downloaded from a computer-readable storage medium to a respective computing/processing device, or to an external computer or external storage device via a network, such as the internet, a local area network, a wide area network, and/or a wireless network. The network may include copper transmission cables, fiber optic transmission, wireless transmission, routers, firewalls, switches, gateway computers and/or border servers. The network adapter card or network interface in each computing/processing device receives computer-readable program instructions from the network and forwards the computer-readable program instructions for storage in a computer-readable storage medium in the respective computing/processing device.
Computer program instructions for carrying out operations of the present disclosure may be assembler instructions, instruction Set Architecture (ISA) instructions, machine-related instructions, microcode, firmware instructions, pose setting data, or source or object code written in any combination of one or more programming languages, including an object oriented programming language such as Smalltalk, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The computer-readable program instructions may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider). In some embodiments, by utilizing pose information of computer-readable program instructions to personalize a custom electronic circuit, such as a programmable logic circuit, a Field Programmable Gate Array (FPGA), or a Programmable Logic Array (PLA), the electronic circuit can execute the computer-readable program instructions to implement various aspects of the present disclosure.
Various aspects of the present disclosure are described herein with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the disclosure. It will be understood that each block of the flowchart illustrations and/or block diagrams, and combinations of blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer-readable program instructions.
These computer-readable program instructions may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions/acts specified in the flowchart and/or block diagram block or blocks. These computer-readable program instructions may also be stored in a computer-readable storage medium that can direct a computer, programmable data processing apparatus, and/or other devices to function in a particular manner, such that the computer-readable medium storing the instructions comprises an article of manufacture including instructions which implement the function/act specified in the flowchart and/or block diagram block or blocks.
The computer readable program instructions may also be loaded onto a computer, other programmable data processing apparatus, or other devices to cause a series of operational steps to be performed on the computer, other programmable apparatus or other devices to produce a computer implemented process such that the instructions which execute on the computer, other programmable apparatus or other devices implement the functions/acts specified in the flowchart and/or block diagram block or blocks.
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of instructions, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions. It is well known to those skilled in the art that implementation by hardware, by software, and by a combination of software and hardware are equivalent.
Having described embodiments of the present disclosure, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terms used herein were chosen in order to best explain the principles of the embodiments, the practical application, or technical improvements to the techniques in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein. The scope of the present disclosure is defined by the appended claims.
Claims (10)
1. A method for playing a panoramic video, comprising:
acquiring at least two code rates corresponding to high-definition video fragments of the panoramic video as high-definition window code rates; the high-definition video fragment is a part of high-definition video content with a first resolution of the panoramic video to be played in a playing window;
selecting one of the high-definition window code rates as a current window code rate;
downloading the high-definition video fragments corresponding to the current window code rate, and reselecting the current window code rate according to the downloading speed of the high-definition video fragments according to the set frequency in the downloading process;
and playing the downloaded high-definition video fragments in the playing window.
2. The method of claim 1, further comprising:
and downloading standard definition video content of second resolution of the panoramic video, and reselecting the code rate of the current window according to the standard definition code rate of the standard definition video content.
3. The method of claim 2, wherein the high definition window coding rate comprises a first window coding rate and a second window coding rate, wherein the first window coding rate is greater than the second window coding rate;
the reselecting the current window code rate according to the standard definition code rate of the standard definition video content comprises the following steps:
determining the sum of the first window code rate and the standard definition code rate as a first sum; determining the sum of the second window code rate and the standard definition code rate as a second sum;
comparing said download speed to a set multiple of said first sum and said download speed to a set multiple of said second sum;
and reselecting the code rate of the current window according to the comparison result.
4. The method of claim 3, wherein selecting the current window bitrate according to the comparison comprises:
under the condition that the downloading speed is greater than or equal to the first sum set multiple, selecting the first window code rate as the current window code rate;
and selecting the second window code rate as the current window code rate under the condition that the downloading speed is less than the set multiple of the first sum and is more than or equal to the set multiple of the second sum.
5. The method of claim 3, wherein the second window code rate is a minimum high definition window code rate, the method further comprising:
and under the condition that the downloading speed is less than the second sum set multiple, stopping downloading the high-definition video fragment and the standard-definition video content, and reminding a user that the bandwidth is too small.
6. The method of claim 1, wherein the obtaining at least two code rates corresponding to the high definition video slices as high definition window code rates comprises:
acquiring at least two high-definition code rates of the high-definition video content;
acquiring a first preset area of the playing window and a second preset area of the panoramic video;
and obtaining at least two high-definition window code rates according to the first area, the second area and the at least two high-definition code rates.
7. The method of claim 2, wherein the method comprises:
and playing the standard definition video content on the lower layer of the high definition video fragment.
8. A playback apparatus for panoramic video, comprising:
the acquisition module is used for acquiring at least two code rates corresponding to high-definition video fragments of the panoramic video as high-definition window code rates; the high-definition video fragment is a part of high-definition video content with a first resolution of the panoramic video to be played in a playing window;
the selecting module is used for selecting one of the high-definition window code rates as a current window code rate;
the downloading module is used for downloading the high-definition video fragments corresponding to the current window code rate and reselecting the current window code rate according to the downloading speed of the high-definition video fragments according to the set frequency in the downloading process;
and the playing module is used for playing the downloaded high-definition video fragments in the playing window.
9. An electronic device, comprising:
a memory for storing executable computer instructions;
a processor for executing the method of playing panoramic video according to any one of claims 1 to 7 under the control of the executable computer instructions.
10. A computer-readable storage medium, wherein the computer-readable storage medium stores thereon computer instructions, and when executed by a processor, the computer instructions perform the method for playing panoramic video according to any one of claims 1 to 7.
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