CN108271071B - Method and device for improving video definition - Google Patents
Method and device for improving video definition Download PDFInfo
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- CN108271071B CN108271071B CN201611259856.6A CN201611259856A CN108271071B CN 108271071 B CN108271071 B CN 108271071B CN 201611259856 A CN201611259856 A CN 201611259856A CN 108271071 B CN108271071 B CN 108271071B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs
- H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
- H04N21/440263—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display by altering the spatial resolution, e.g. for displaying on a connected PDA
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/266—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel
- H04N21/2662—Controlling the complexity of the video stream, e.g. by scaling the resolution or bitrate of the video stream based on the client capabilities
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs
- H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
- H04N21/440281—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display by altering the temporal resolution, e.g. by frame skipping
Abstract
The embodiment of the invention discloses a method and a device for improving video definition. According to the embodiment of the invention, when the uploading video code rate is lower due to the jitter of the anchor network or the poor network, the intelligent repacking can be carried out on the anchor, the playing code rate of the anchor is improved, the low frame rate compensation can be carried out on the anchor under the condition that the network condition of the anchor is good but the playing video frame rate is too low, and the playing code rate of the anchor is intelligently adjusted to the set code rate, so that the video fuzzy problem caused by the fact that the request code rate cannot be reached is solved. The embodiment of the invention also discloses a system for improving the video definition.
Description
Technical Field
The invention relates to the field of anchor live video definition, in particular to a method and a device for improving video definition.
Background
In recent years, the internet mobile live broadcast is more and more exploded, and the scheme provides a scheme for automatically improving the definition of the anchor video with the low frame rate. The conditions that can be lifted are as follows:
1. the network condition of the anchor is good, but the frame rate of the video played is too low, so that the video blurring caused by the unavailable code rate of the request is caused
2. When the main broadcasting network is jittered or the network is poor, and the uploading video code rate is low, the intelligent packet supplementing can be realized, and the main broadcasting playing code rate is improved
The general practice in the industry is as follows:
taking the fish fighting as an example, if the user selects the fixed code rate playing, the function of intelligently and dynamically adjusting the code rate is absent.
When the user selects the dynamic code rate for live broadcasting, the code rate cannot be set, and the broadcast is carried out according to the code rate of the user uplink bandwidth threshold, so that the bandwidth of a company is wasted.
Therefore, it is a technical problem to be solved by those skilled in the art to provide a method and an apparatus for intelligently improving the definition of live video when a main broadcast encounters a broadcast situation or a poor network.
Disclosure of Invention
The embodiment of the invention provides a method and a device for improving video definition, which can ensure relatively clear live video when a main broadcast meets a broadcasting condition or a network is poor, and improve the visual experience of a user.
The embodiment of the invention provides a method for improving video definition, which comprises the following steps:
s1: after the uploading parameters of the live video network of the anchor terminal are judged to meet the parameter requirements, whether the live video network of the anchor terminal generates network jitter is judged, if yes, S2 is executed;
s2: and performing image frame supplementing operation on the video of the anchor terminal to enable the actual live broadcast code rate of the anchor terminal to be equal to the preset live broadcast code rate.
Preferably, the method for improving video definition provided by the embodiment of the present invention further includes:
and after judging that the live video network of the anchor end does not generate network jitter and judging that the live frame rate of the anchor end is lower than the preset frame rate requirement, performing low frame rate compensation operation on the video of the anchor end, and increasing the actual live broadcast code rate of the anchor end to the preset live broadcast code rate.
Preferably, the method for improving video definition provided by the embodiment of the present invention further includes: and after judging that the uploading parameters of the video live broadcast network of the anchor terminal do not meet the parameter requirements, sending prompt information that the network does not meet the standards to the anchor terminal.
Preferably, the method for improving video definition provided by the embodiment of the present invention further includes: after the uploading parameters of the video live broadcast network of the anchor terminal are judged not to meet the parameter requirements, the video live broadcast code rate of the anchor terminal is reduced to the uploading network upper limit value of the anchor terminal through the anchor terminal.
Preferably, the anchor terminal is a mobile phone terminal, a PC client terminal or a WEB terminal.
Preferably, the uploading parameters include: the method comprises the steps of live broadcast resolution, preset live broadcast code rate, actual live broadcast code rate, live broadcast frame rate, coding mode and picture quality grade.
Preferably, an embodiment of the present invention further provides an apparatus for improving video definition, including:
the judging unit is used for judging whether the video live broadcast network of the anchor end generates network jitter or not after judging that the uploading parameter of the video live broadcast network of the anchor end meets the parameter requirement, and if so, triggering the frame supplementing unit;
and the frame supplementing unit is used for carrying out image frame supplementing operation on the video of the anchor terminal so that the actual live broadcast code rate of the anchor terminal is equal to the preset live broadcast code rate.
Preferably, an apparatus for improving video definition according to an embodiment of the present invention further includes: and the compensation unit is used for performing low frame rate compensation operation on the video of the anchor end and increasing the actual live broadcast code rate of the anchor end to the preset live broadcast code rate after judging that the live broadcast network of the anchor end does not generate network jitter and judging that the live broadcast frame rate of the anchor end is lower than the preset frame rate requirement.
Preferably, an apparatus for improving video definition according to an embodiment of the present invention further includes: and the sending unit is used for sending prompt information that the network does not reach the standard to the anchor terminal after judging that the uploading parameter of the video live broadcast network of the anchor terminal does not meet the parameter requirement.
Preferably, an apparatus for improving video definition according to an embodiment of the present invention further includes: and the reducing unit is used for reducing the video live broadcast code rate of the anchor end to the upper limit value of the uploading network of the anchor end through the anchor end after judging that the uploading parameter of the video live broadcast network of the anchor end does not meet the parameter requirement.
Preferably, an embodiment of the present invention further provides a system for improving video definition, including: the apparatus for improving video definition and the anchor as described above;
the device for improving video definition is in communication connection with the anchor terminal.
According to the technical scheme, the embodiment of the invention has the following advantages:
the embodiment of the invention provides a method and a device for improving video definition, wherein the method for improving the video definition comprises the following steps: s1: after the uploading parameters of the live video network of the anchor terminal are judged to meet the parameter requirements, whether the live video network of the anchor terminal generates network jitter is judged, if yes, S2 is executed; s2: and performing image frame supplementing operation on the video of the anchor terminal to enable the actual live broadcast code rate of the anchor terminal to be equal to the preset live broadcast code rate. According to the embodiment of the invention, when the uploading video code rate is lower due to the jitter of the anchor network or the poor network, the intelligent repacking can be carried out on the anchor, the playing code rate of the anchor is improved, the low frame rate compensation can be carried out on the anchor under the condition that the network condition of the anchor is good but the playing video frame rate is too low, and the playing code rate of the anchor is intelligently adjusted to the set code rate, so that the video fuzzy problem caused by the fact that the request code rate cannot be reached is solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a flowchart illustrating a method for improving video sharpness according to an embodiment of the present invention;
fig. 2 is another flowchart illustrating a method for improving video sharpness according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an apparatus for improving video sharpness according to an embodiment of the present invention;
fig. 4 is a schematic diagram of an application of a method for improving video sharpness according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a system for improving video sharpness according to an embodiment of the present invention.
Detailed Description
The embodiment of the invention provides a method and a device for improving video definition, which can ensure relatively clear live video when a main broadcast meets a broadcasting condition or a network is poor, and improve the visual experience of a user.
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, an embodiment of a method for improving video sharpness according to the present invention includes:
101. after the uploading parameters of the video live broadcast network of the anchor terminal are judged to meet the parameter requirements, judging whether the video live broadcast network of the anchor terminal has network jitter, if so, executing 102;
and after judging that the uploading parameters of the live video network of the anchor terminal meet the parameter requirements, the broadcast server judges whether the live video network of the anchor terminal has network jitter, if so, executing the step 102.
102. And performing image frame supplementing operation on the video of the anchor terminal to enable the actual live broadcast code rate of the anchor terminal to be equal to the preset live broadcast code rate.
And after judging that the network jitter occurs in the video live broadcast network of the anchor terminal, the broadcast server performs image frame supplementing operation on the video of the anchor terminal, so that the actual live broadcast code rate of the anchor terminal is equal to the preset live broadcast code rate.
Referring to fig. 2, another embodiment of a method for improving video sharpness according to the present invention includes:
201. judging whether the uploading parameters of the video live broadcast network of the main broadcast end meet the parameter requirements, if so, executing 202, and if not, executing 203 and simultaneously executing 204;
the broadcast server judges whether the uploading parameters of the video live network of the main broadcast end meet the parameter requirements, if so, 202 is executed, and if not, 203 and 204 are executed simultaneously.
202. Judging whether a live video network of a main broadcasting end generates network jitter, if so, executing 205, otherwise, executing 206;
after judging that the uploading parameter of the live video network of the anchor terminal meets the parameter requirement, the broadcast server judges whether the live video network of the anchor terminal has network jitter, if so, the process is executed 205, and if not, the process is executed 206.
203. Sending prompt information that the network does not reach the standard to the anchor terminal;
and after judging that the uploading parameters of the video live broadcast network of the anchor terminal do not meet the parameter requirements, the broadcast server sends prompt information that the network does not reach the standard to the anchor terminal.
204. Reducing the video live broadcast code rate of the anchor end to the upper limit value of an uploading network of the anchor end through the anchor end;
and after judging that the uploading parameters of the video live broadcast network of the anchor terminal do not meet the parameter requirements, the broadcasting server reduces the video live broadcast code rate of the anchor terminal to the uploading network upper limit value of the anchor terminal through the anchor terminal.
205. Performing image frame supplementing operation on the video of the anchor end to enable the actual live broadcast code rate of the anchor end to be equal to the preset live broadcast code rate;
and after judging that the network jitter occurs in the video live broadcast network of the anchor terminal, the broadcast server performs image frame supplementing operation on the video of the anchor terminal, so that the actual live broadcast code rate of the anchor terminal is equal to the preset live broadcast code rate.
206. And after judging that the live broadcast frame rate of the anchor end is lower than the preset frame rate requirement, performing low frame rate compensation operation on the video of the anchor end, and increasing the actual live broadcast code rate of the anchor end to the preset live broadcast code rate.
And after judging that the live broadcast network of the anchor end does not generate network jitter and the live broadcast frame rate of the anchor end is lower than the preset frame rate requirement, the playing server performs low frame rate compensation operation on the video of the anchor end and raises the actual live broadcast code rate of the anchor end to the preset live broadcast code rate.
Specifically, the anchor terminal is a mobile phone terminal, a PC client terminal or a WEB terminal.
The uploading parameters comprise: the method comprises the steps of live broadcast resolution, preset live broadcast code rate, actual live broadcast code rate, live broadcast frame rate, coding mode and picture quality grade.
In order to facilitate understanding, the following description is made of an application of a method for improving video definition in a specific application scenario, and referring to fig. 4, examples of the application include:
1) after the video is started by the anchor, the network condition of the anchor is checked first, if the network condition does not reach the standard (for example, the code rate is set to be 1.2M for broadcasting, but the network uplink of the anchor is lower than 1.2M, the network condition does not reach the standard)
The broadcasting server can automatically remind the anchor that the network condition is poor, and meanwhile, because the anchor uplink network cannot meet the requirement, the client (hand Y, PC client, WEB end and the like) can reduce the set code rate of the anchor to the uplink network threshold value of the anchor, so that the anchor can be broadcasted with the best video effect, and particularly, the client is the anchor.
2) When the server detects that the anchor network is jittery, e.g., suddenly behaving at 0 on the network, a 4 second delay between the anchor's playback end and the user's viewing end is used (typically, the user sees the video normally within 5 seconds of the anchor). The server automatically supplements the packet to the anchor for broadcasting, so that the code rate of the anchor can reach the set code rate.
3) When the network conditions of the anchor are normal, but the frame rate is too low. Normally, the bit rate is also low, for example, the anchor sets the playback frame rate to 20 frames, and the playback bit rate to 2M.
Since the actual frame rate is only 10 frames, the actual bitrate of playing is in direct proportion to the frame rate, so that the actual bitrate of playing is only 1M, and thus the video may appear blurred.
When the server judges that the actual playing frame rate/the set frame rate is less than 0.8 (the value can be set), the server can intelligently adjust the anchor playing code rate to the set code rate 2M.
Referring to fig. 3, an embodiment of an apparatus for improving video sharpness according to the present invention includes:
the judging unit 301 is configured to judge whether a network jitter occurs in a live video network of a anchor terminal after judging that an uploading parameter of the live video network of the anchor terminal meets a parameter requirement, and if so, trigger a frame supplementing unit;
a frame complementing unit 302, configured to perform image frame complementing operation on the video at the anchor end, so that an actual live broadcast code rate of the anchor end is equal to a preset live broadcast code rate;
the device for improving video definition provided by the embodiment of the invention further comprises: the compensation unit 303 is configured to perform low frame rate compensation operation on the video of the anchor end after determining that the network jitter does not occur in the live video network of the anchor end and determining that the live broadcast frame rate of the anchor end is lower than a preset frame rate requirement, and increase the actual live broadcast code rate of the anchor end to a preset live broadcast code rate.
The device for improving video definition provided by the embodiment of the invention further comprises: a sending unit 304, configured to send a prompt message that the network does not meet the requirement to the anchor terminal after determining that the upload parameter of the live video network of the anchor terminal does not meet the requirement.
The device for improving video definition provided by the embodiment of the invention further comprises: a reducing unit 305, configured to reduce, by the anchor terminal, the video live broadcast code rate of the anchor terminal to an upper limit value of an upload network of the anchor terminal after it is determined that the upload parameter of the video live broadcast network of the anchor terminal does not meet the parameter requirement.
Referring to fig. 5, an embodiment of a system for improving video sharpness according to the present invention includes:
the apparatus for improving video definition and the anchor as described above;
the device for improving the video definition is in communication connection with the anchor terminal.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (9)
1. A method for improving video sharpness, comprising:
s1: after the uploading parameters of the live video network of the anchor terminal are judged to meet the parameter requirements, whether the live video network of the anchor terminal generates network jitter is judged, if yes, S2 is executed, and if not, S3 is executed;
s2: performing image frame supplementing operation on the video of the anchor terminal to enable the actual live broadcast code rate of the anchor terminal to be equal to a preset live broadcast code rate, wherein the preset live broadcast code rate is a fixed live broadcast code rate set before broadcasting;
s3: and after judging that the live broadcast frame rate of the anchor end is lower than the preset frame rate requirement, performing low frame rate compensation operation on the video of the anchor end, and increasing the actual live broadcast code rate of the anchor end to the preset live broadcast code rate.
2. The method of claim 1, further comprising: and after judging that the uploading parameters of the video live broadcast network of the anchor terminal do not meet the parameter requirements, sending prompt information that the network does not meet the standards to the anchor terminal.
3. The method of claim 1, further comprising: after the uploading parameters of the video live broadcast network of the anchor terminal are judged not to meet the parameter requirements, the video live broadcast code rate of the anchor terminal is reduced to the uploading network upper limit value of the anchor terminal through the anchor terminal.
4. The method for improving video definition according to claim 1, wherein the anchor terminal is a mobile phone terminal, a PC client terminal or a WEB terminal.
5. The method of any of claims 1 to 4, wherein the uploading parameters comprise: the method comprises the steps of live broadcast resolution, preset live broadcast code rate, actual live broadcast code rate, live broadcast frame rate, coding mode and picture quality grade.
6. An apparatus for enhancing video sharpness, comprising:
the judging unit is used for judging whether the video live broadcast network of the anchor end generates network jitter or not after judging that the uploading parameter of the video live broadcast network of the anchor end meets the parameter requirement, and if so, triggering the frame supplementing unit;
the frame supplementing unit is used for performing image frame supplementing operation on the video of the anchor end to enable the actual live broadcast code rate of the anchor end to be equal to a preset live broadcast code rate, wherein the preset live broadcast code rate is a fixed live broadcast code rate set before broadcasting;
and the compensation unit is used for performing low frame rate compensation operation on the video of the anchor end and increasing the actual live broadcast code rate of the anchor end to the preset live broadcast code rate after judging that the live broadcast network of the anchor end does not generate network jitter and judging that the live broadcast frame rate of the anchor end is lower than the preset frame rate requirement.
7. The apparatus for enhancing video sharpness according to claim 6, further comprising: and the sending unit is used for sending prompt information that the network does not reach the standard to the anchor terminal after judging that the uploading parameter of the video live broadcast network of the anchor terminal does not meet the parameter requirement.
8. The apparatus for enhancing video sharpness according to claim 6, further comprising: and the reducing unit is used for reducing the video live broadcast code rate of the anchor end to the upper limit value of the uploading network of the anchor end through the anchor end after judging that the uploading parameter of the video live broadcast network of the anchor end does not meet the parameter requirement.
9. A system for enhancing video sharpness, comprising: the apparatus for improving video definition according to any one of claims 6 to 8 and the anchor end;
the device for improving video definition is in communication connection with the anchor terminal.
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