CN113490003A - Multi-resolution self-adaptive streaming media code rate conversion method, electronic equipment and storage medium - Google Patents
Multi-resolution self-adaptive streaming media code rate conversion method, electronic equipment and storage medium Download PDFInfo
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- CN113490003A CN113490003A CN202110607427.8A CN202110607427A CN113490003A CN 113490003 A CN113490003 A CN 113490003A CN 202110607427 A CN202110607427 A CN 202110607427A CN 113490003 A CN113490003 A CN 113490003A
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- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 13
- 238000004590 computer program Methods 0.000 claims description 4
- 230000003247 decreasing effect Effects 0.000 claims description 2
- 230000003044 adaptive effect Effects 0.000 abstract description 10
- 239000002699 waste material Substances 0.000 abstract description 4
- 238000004364 calculation method Methods 0.000 abstract description 3
- 230000003993 interaction Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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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
- H04N21/21—Server components or server architectures
- H04N21/218—Source of audio or video content, e.g. local disk arrays
- H04N21/2187—Live feed
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/60—Network streaming of media packets
- H04L65/70—Media network packetisation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/60—Network streaming of media packets
- H04L65/75—Media network packet handling
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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
- H04N21/440272—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 for performing aspect ratio conversion
Abstract
The invention provides a multiresolution self-adaptive streaming media code rate conversion method, when a streaming media server receives a frame of data, the server perceives the height of the playing pictures of all client sides subscribed by the frame, and simultaneously starts a resolution transcoder to execute decoding, target size calculation, transcoding, encoding and distribution, converts the frame of data into a plurality of corresponding frames with different resolutions, and then accurately dispatches the frame according to the height of the playing pictures of the client sides, if the frame resolution transcoder does not need to be converted after a period of time, the resolution transcoder is closed. The invention relates to an electronic device and a storage medium for performing a multiresolution adaptive streaming media transcoding method. According to the invention, through sensing the playing mode of the client in real time, and then calculating, converting and coding a data frame into various sizes which are most suitable for the client in real time, high-efficiency and low-bandwidth interaction of data is finally realized, and unnecessary resource waste is reduced.
Description
A multi-resolution adaptive streaming media code rate conversion method, electronic equipment and a storage medium are provided.
Technical Field
The invention relates to the technical field of real-time code rate conversion, in particular to a multi-resolution self-adaptive streaming media code rate conversion method, electronic equipment and a storage medium.
Background
In the existing service, the streaming media video monitoring requires very high real-time performance, the client resource occupies little, and the multi-picture playing is performed, although some playing services provided by traditional camera manufacturers can implement playing, the bandwidth and the client resource occupy higher and depend on plug-ins, the client plays a 720p picture, and the server transmits a 1080p code stream, which results in resource waste.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a multiresolution adaptive streaming media bit rate conversion method, which automatically finds out the optimal resolution according to the resolution played by a front end, and shares 1 bit rate transcoder aiming at a plurality of clients subscribed in the same category, so that the flow can be obviously reduced, the fluency can be improved, and the user experience is not influenced.
The invention provides a multi-resolution self-adaptive streaming media code rate conversion method, which comprises the following steps:
the real-time sensing client playing mode receives the current frame data and senses the playing frame heights of all clients subscribed by the current frame;
converting frames with different resolutions, and converting the current frame data into a plurality of corresponding frames with different resolutions;
and dispatching the data, namely dispatching the converted frame data according to the playing picture height of the client.
Further, the converting the different resolution frames comprises:
calculating a target streaming media size type, wherein if the playing height of a client is greater than or equal to the original height of a frame, the target streaming media size type is an original picture, if the playing height of the client is smaller than a value corresponding to the current streaming media size type, and the original height of the frame is smaller than a first original height threshold value, the target streaming media size type is the original picture, otherwise, the target streaming media size type is the next streaming media size type;
calculating the width and the height of resolution, wherein if the size type of the target streaming media is an original picture, the target height is the original height of the frame, and the target width is the original width of the frame; and if the size type of the target streaming media is a non-original picture, the target height is a second original height threshold value, and the target width is the product of the target height and the frame original width and is divided by the frame original height.
Further, the streaming media size types include 0, 1, 2, and 3, where 0 corresponds to the original picture, and the streaming media sizes corresponding to 1, 2, and 3 are sequentially decreased.
Further, the 1 corresponds to 720P, the 2 corresponds to 480P, and the 3 corresponds to 360P.
Further, the first original height threshold includes 420 and 550, where 420 corresponds to 480P, and 550 corresponds to 720P.
Further, in the step of calculating the target streaming media size type, if the playing height of the client is less than 480 and the frame original height is less than 420, the target streaming media size type is an original frame, otherwise, the target streaming media size type is 360P; if the playing height of the client is smaller than 720 and the original height of the frame is smaller than 550, the size type of the target streaming media is an original picture, otherwise, the size type of the target streaming media is 480P; if the client playing height is not satisfied to be greater than or equal to the frame original height, the client playing height is less than 480, the frame original height is less than 420, the client playing height is less than 720, the frame original height is less than 550, and the frame original height is less than or equal to 720, the target streaming media size type is the original picture, otherwise, the target streaming media size type is 720P.
Further, the second original height threshold includes 600, 480, and 360, 600 corresponding to 720P, 480 corresponding to 480P, and 360 corresponding to 360P.
Further, in the step of calculating the resolution ratio, if the target streaming media size type is 720P, the target height is 600, the target width is a product of the target height and the frame original width, and then the product is divided by the frame original height, and if the target width is not a multiple of 2, the target width is added with 1; if the target streaming media size type is 480P, the target height is 480, the target width is the product of the target height and the frame original width, and then the product is divided by the frame original height, and if the target width is not a multiple of 2, the target width is added with 1; if the target streaming media size type is 360P, the target height is 360, the target width is the product of the target height and the frame original width, and then the product is divided by the frame original height, and if the target width is not a multiple of 2, then the target width is added with 1.
An electronic device, comprising: a processor;
a memory; and a program, wherein the program is stored in the memory and configured to be executed by the processor, the program comprising instructions for performing a multi-resolution adaptive streaming media transcoding method.
A computer-readable storage medium having stored thereon a computer program for execution by a processor of a method for multiresolution adaptive streaming media transcoding.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a multiresolution self-adaptive streaming media code rate conversion method, when a streaming media server receives a frame of data, the server perceives the height of the playing pictures of all client sides subscribed by the frame, and simultaneously starts a resolution transcoder to execute decoding, target size calculation, transcoding, encoding and distribution, converts the frame of data into a plurality of corresponding frames with different resolutions, and then accurately dispatches the frame according to the height of the playing pictures of the client sides, if the frame resolution transcoder does not need to be converted after a period of time, the resolution transcoder is closed. The invention relates to an electronic device and a storage medium for performing a multiresolution adaptive streaming media transcoding method. According to the invention, through sensing the playing mode of the client in real time, and then calculating, converting and coding a data frame into various sizes which are most suitable for the client in real time, high-efficiency and low-bandwidth interaction of data is finally realized, and unnecessary resource waste is reduced.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings. The detailed description of the present invention is given in detail by the following examples and the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
fig. 1 is a flowchart of a multiresolution adaptive streaming media bit rate conversion method according to the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.
A multi-resolution self-adaptive streaming media code rate conversion method is used for assisting a client to exchange data with a streaming media server at high efficiency and remarkably reducing bandwidth occupation. As shown in fig. 1, the method comprises the following steps:
the real-time sensing client playing mode receives the current frame data and senses the playing frame heights of all clients subscribed by the current frame;
and converting the frames with different resolutions, and converting the current frame data into a plurality of corresponding frames with different resolutions. Specifically, the method comprises the following steps:
calculating a target streaming media size type, wherein if the playing height of the client is greater than or equal to the original height of the frame, the target streaming media size type is an original picture, if the playing height of the client is smaller than a value corresponding to the current streaming media size type, and the original height of the frame is smaller than a first original height threshold value, the target streaming media size type is the original picture, otherwise, the target streaming media size type is a next streaming media size type;
calculating the width and the height of resolution, wherein if the size type of the target streaming media is an original picture, the target height is the original height of a frame, and the target width is the original width of the frame; if the size type of the target streaming media is a non-original picture, the target height is a second original height threshold value, and the target width is the product of the target height and the original frame width and then is divided by the original frame height.
In an embodiment, the streaming media size type includes 0, 1, 2, and 3, where 0 corresponds to the original picture, and the streaming media sizes corresponding to 1, 2, and 3 decrease sequentially. In this embodiment, 1 corresponds to 720P, 2 corresponds to 480P, 3 corresponds to 360P, the first original height threshold includes values 420 and 550, where 420 corresponds to 480P, and 550 corresponds to 720P.
In the step of calculating the size type of the target streaming media, if the playing height of the client is greater than or equal to the original height of the frame, the size type of the target streaming media is an original picture; if the playing height of the client is less than 480 and the original height of the frame is less than 420, the size type of the target streaming media is an original picture, otherwise, the size type of the target streaming media is 360P; if the playing height of the client is smaller than 720 and the original height of the frame is smaller than 550, the size type of the target streaming media is an original picture, otherwise, the size type of the target streaming media is 480P; if the above are not true and the frame original height is less than or equal to 720, the target streaming media size type is the original frame, otherwise the target streaming media size type is 720P.
In one embodiment, the second original height threshold includes 600, 480, and 360, 600 corresponding to 720P, 480 corresponding to 480P, and 360 corresponding to 360P.
In the step of calculating the resolution width and the resolution height, if the size type of the target streaming media is an original picture, the target height is the original height of a frame, and the target width is the original width of the frame; if the size type of the target streaming media is 720P, the target height is 600, the target width is the product of the target height and the original frame width, and then the product is divided by the original frame height, and if the target width is not a multiple of 2, the target width is added with 1; if the size type of the target streaming media is 480P, the target height is 480, the target width is the product of the target height and the original frame width and then divided by the original frame height, and if the target width is not a multiple of 2, the target width is added with 1; if the target streaming media size type is 360P, the target height is 360, the target width is the product of the target height and the original frame width, and then the target width is divided by the original frame height, and if the target width is not a multiple of 2, the target width is added with 1.
And dispatching the data, namely dispatching the converted frame data according to the playing picture height of the client. After the target size is calculated and transcoding is carried out, the finally encoded data frame is obviously smaller than the original frame, the bandwidth pressure is reduced, the rendering pressure of the client is reduced, and the client smoothly plays a plurality of pictures as required.
An electronic device, comprising: a processor;
a memory; and a program, wherein the program is stored in the memory and configured to be executed by the processor, the program comprising instructions for performing a multi-resolution adaptive streaming media transcoding method.
A computer-readable storage medium having stored thereon a computer program for execution by a processor of a method for multiresolution adaptive streaming media transcoding.
The invention provides a multiresolution self-adaptive streaming media code rate conversion method, when a streaming media server receives a frame of data, the server perceives the height of the playing pictures of all client sides subscribed by the frame, and simultaneously starts a resolution transcoder to execute decoding, target size calculation, transcoding, encoding and distribution, converts the frame of data into a plurality of corresponding frames with different resolutions, and then accurately dispatches the frame according to the height of the playing pictures of the client sides, if the frame resolution transcoder does not need to be converted after a period of time, the resolution transcoder is closed. The invention relates to an electronic device and a storage medium for performing a multiresolution adaptive streaming media transcoding method. According to the invention, through sensing the playing mode of the client in real time, and then calculating, converting and coding a data frame into various sizes which are most suitable for the client in real time, high-efficiency and low-bandwidth interaction of data is finally realized, and unnecessary resource waste is reduced.
The foregoing is merely a preferred embodiment of the invention and is not intended to limit the invention in any manner; those skilled in the art can readily practice the invention as shown and described in the drawings and detailed description herein; however, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the scope of the invention as defined by the appended claims; meanwhile, any changes, modifications, and evolutions of the equivalent changes of the above embodiments according to the actual techniques of the present invention are still within the protection scope of the technical solution of the present invention.
Claims (10)
1. A multiresolution self-adaptive streaming media code rate conversion method is characterized by comprising the following steps:
the real-time sensing client playing mode receives the current frame data and senses the playing frame heights of all clients subscribed by the current frame;
converting frames with different resolutions, and converting the current frame data into a plurality of corresponding frames with different resolutions;
and dispatching the data, namely dispatching the converted frame data according to the playing picture height of the client.
2. The method of claim 1, wherein the method comprises: the converting the different resolution frames step includes:
calculating a target streaming media size type, wherein if the playing height of a client is greater than or equal to the original height of a frame, the target streaming media size type is an original picture, if the playing height of the client is smaller than a value corresponding to the current streaming media size type, and the original height of the frame is smaller than a first original height threshold value, the target streaming media size type is the original picture, otherwise, the target streaming media size type is the next streaming media size type;
calculating the width and the height of resolution, wherein if the size type of the target streaming media is an original picture, the target height is the original height of the frame, and the target width is the original width of the frame; and if the size type of the target streaming media is a non-original picture, the target height is a second original height threshold value, and the target width is the product of the target height and the frame original width and is divided by the frame original height.
3. The method of claim 2, wherein the method comprises: the streaming media size types comprise 0, 1, 2 and 3, wherein 0 corresponds to an original picture, and the streaming media sizes corresponding to 1, 2 and 3 are sequentially decreased.
4. The method of claim 3, wherein the method comprises: the 1 corresponds to 720P, the 2 corresponds to 480P, and the 3 corresponds to 360P.
5. The method of claim 3, wherein the method comprises: the first original height threshold includes 420 and 550, where 420 corresponds to a value of 480P and 550 corresponds to a value of 720P.
6. The method of claim 5, wherein the method comprises: in the step of calculating the size type of the target streaming media, if the playing height of the client is less than 480 and the original height of the frame is less than 420, the size type of the target streaming media is an original picture, otherwise, the size type of the target streaming media is 360P; if the playing height of the client is smaller than 720 and the original height of the frame is smaller than 550, the size type of the target streaming media is an original picture, otherwise, the size type of the target streaming media is 480P; if the client playing height is not satisfied to be greater than or equal to the frame original height, the client playing height is less than 480, the frame original height is less than 420, the client playing height is less than 720, the frame original height is less than 550, and the frame original height is less than or equal to 720, the target streaming media size type is the original picture, otherwise, the target streaming media size type is 720P.
7. The method of claim 6, wherein the method comprises: the second original height thresholds include 600, 480, and 360, 600 for 720P, 480 for 480P, and 360 for 360P.
8. The method of claim 7, wherein the method comprises: in the step of calculating the resolution width and height, if the size type of the target streaming media is 720P, the target height is 600, the target width is the product of the target height and the frame original width, and then divided by the frame original height, and if the target width is not a multiple of 2, the target width is added with 1; if the target streaming media size type is 480P, the target height is 480, the target width is the product of the target height and the frame original width, and then the product is divided by the frame original height, and if the target width is not a multiple of 2, the target width is added with 1; if the target streaming media size type is 360P, the target height is 360, the target width is the product of the target height and the frame original width, and then the product is divided by the frame original height, and if the target width is not a multiple of 2, then the target width is added with 1.
9. An electronic device, characterized by comprising: a processor;
a memory; and a program, wherein the program is stored in the memory and configured to be executed by the processor, the program comprising instructions for carrying out the method according to any one of claims 1-8.
10. A computer-readable storage medium having stored thereon a computer program, characterized in that: the computer program is executed by a processor for performing the method according to any of claims 1-8.
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Application publication date: 20211008 |