CN104954863B - Audio and video decoding component selection method and system - Google Patents
Audio and video decoding component selection method and system Download PDFInfo
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- CN104954863B CN104954863B CN201510306456.5A CN201510306456A CN104954863B CN 104954863 B CN104954863 B CN 104954863B CN 201510306456 A CN201510306456 A CN 201510306456A CN 104954863 B CN104954863 B CN 104954863B
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- 238000010187 selection method Methods 0.000 title description 10
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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 or rendering scenes according to encoded video stream scene graphs
- H04N21/4405—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving video stream decryption
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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
- H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
- H04N21/4345—Extraction or processing of SI, e.g. extracting service information from an MPEG stream
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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
- H04N21/435—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
- H04N21/4355—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream involving reformatting operations of additional data, e.g. HTML pages on a television screen
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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
- H04N21/439—Processing of audio elementary streams
- H04N21/4398—Processing of audio elementary streams involving reformatting operations of audio signals
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Abstract
The invention relates to a method and a system for selecting audio and video decoding components, which match the audio and video decoding components according to the terminal performance and the media types of the audio and video, evaluate each matched decoding component according to influence factors, select a group of decoding components which have the highest evaluation value and can decode the audio and video to decode the audio and video, select the decoding components according to the performance of terminal equipment and the decoding components instead of selecting the decoding components according to initial setting, thereby avoiding the problem that the terminal equipment cannot select the corresponding decoding components to play the audio and video, so that the audio and video cannot be played, and bringing great convenience to users.
Description
Technical Field
The invention relates to the field of communication, in particular to an audio and video decoding component selection method and system.
Background
With the development of an intelligent system (e.g., an android system), more and more terminal devices (e.g., set-top boxes) are now developing players based on the intelligent system to provide functions such as online playing and on-demand playing. Since the hardware configuration or network performance of the terminal device is different, even if the same program is played, the fluency of playing the audio and video will be different due to the definition of the network performance, the hardware configuration and the user selection.
When the terminal equipment based on the intelligent system decodes the audio and video, the decoding component is matched according to the media type of the audio and video, and the hard decoding component or the soft decoding component can be selected according to the matching, or the hard decoding component or the soft decoding component can be selected. The soft decoding mode of the soft decoding component is stable, does not need the support of a platform, and has higher requirement on a CPU. The hard solution mode of the hard solution component requires platform support, decoding cannot be carried out if the platform support is not carried out, but consumption of a CPU is low. At present, when a terminal device decodes audio and video, a decoding component is selected according to preset matching of the audio and video instead of the performance of the terminal device, and if the CPU configuration of the terminal device is low or the CPU configuration is occupied too much or the terminal device platform does not support a hard solution mode, the terminal device cannot select the corresponding decoding component to play the audio and video, so that the audio and video cannot be played, and great inconvenience is brought to a user.
Disclosure of Invention
In view of this, it is necessary to provide an audio/video decoding component selection method and system for solving the problem that the audio/video cannot be normally played because the decoding component selection is not matched according to the performance of the terminal device.
The invention provides an audio and video decoding component selection method, which comprises the following steps:
s10: analyzing and acquiring the media type of the audio and video, and matching with all components on the terminal equipment according to the media type to acquire all decoding components which can be matched with the audio and video media type;
s20: evaluating each matched decoding assembly by adopting preset factors influencing audio and video decoding playing to obtain an evaluation value of each decoding assembly;
s30: and selecting a group of decoding components which have the highest evaluation value and can decode the audio and video to decode the audio and video.
Further, the step S10 is specifically: the terminal equipment receives and acquires the media type of the audio and video; when decoding playing is needed, the terminal equipment loads and analyzes the XML file with the media type and the corresponding decoding component information, matches the media type of the audio and video with the media type analyzed by the XML file, and if the media type of the audio and video is successfully matched with the media type in the XML file, acquires all decoding components corresponding to the media type in the XML file.
Further, the step S10 is specifically: and matching the media type of the audio and video with the media type analyzed by the XML file in a character string comparison mode.
Further, the step S20 is specifically: and distributing weights and scores to a plurality of factors influencing the decoding components and forming an evaluation function, and evaluating each matched decoding component by adopting the evaluation function to obtain an evaluation value.
Further, the step S30 is specifically: if a hard solution component and a soft solution component with the same evaluation value exist, the hard solution component is preferentially selected.
The invention also provides an audio and video decoding component selection system, which comprises:
the decoding component matching unit analyzes and acquires the media type of the audio and video, matches all the components on the terminal equipment according to the media type and acquires all the decoding components which can be matched with the audio and video media type;
the decoding component evaluation unit is used for evaluating each matched decoding component by adopting a preset factor influencing audio and video decoding playing to acquire an evaluation value of each decoding component;
and the decoding component selection unit selects a group of decoding components which have the highest evaluation value and can decode the audio and the video to decode the audio and the video.
Further, the decoding component matching unit receives and acquires the media type of the audio and video; when decoding playing is needed, loading and analyzing an XML file with a media type and corresponding decoding component information, matching the media type of the audio and the video with the media type analyzed by the XML file, and if the media type of the audio and the video is successfully matched with the media type in the XML file, acquiring all decoding components corresponding to the media type in the XML file.
Furthermore, the decoding component matching unit matches the media type of the audio and video with the media type analyzed by the XML file in a character string comparison mode.
Further, the decoding component evaluation unit assigns weights and scores to a plurality of factors affecting the decoding components and forms an evaluation function, and evaluates each matched decoding component using the evaluation function to obtain an evaluation value.
Further, the decoding block selecting unit preferentially selects a hard solution block if there are a hard solution block and a soft solution block having the same evaluation value.
The audio and video decoding component selection method and system of the invention match the audio and video decoding components according to the terminal performance and the media types of the audio and video, simultaneously evaluate each matched decoding component according to the influence factors, select a group of decoding components which have the highest evaluation value and can decode the audio and video to decode the audio and video, thus selecting the decoding components according to the performance of the terminal equipment and the decoding components instead of selecting the decoding components according to the initial setting, thereby avoiding the problem that the terminal equipment can not select the corresponding decoding components to play the audio and video, so that the audio and video can not be played, and bringing great convenience to users.
Drawings
Fig. 1 is a flow diagram of an audio-video decoding component selection method in one embodiment;
fig. 2 is a block diagram of an audio-video decoding component selection system in one embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Fig. 1 is a flowchart of an audio-video decoding component selection method in an embodiment, as shown in fig. 1, the method includes the following steps:
s10: analyzing and acquiring the media type of the audio and video, and matching with all components on the terminal equipment according to the media type to acquire all decoding components which can be matched with the audio and video media type.
Audio and video have different media types that require different decoding components to decode. Since the terminal device may have multiple decoding components (soft or hard), the terminal device may have a single decoding component or multiple sets of decoding components for each media type. When the terminal device decodes and plays the audio and video, in order to select the decoding component capable of decoding, the media type of the audio and video needs to be firstly acquired, the media type of the audio and video is acquired and then matched with the decoding component on the terminal device according to the media type, and all the decoding components capable of being matched with the media type on the terminal device are matched.
In this embodiment, the steps specifically include: the terminal equipment receives and acquires the media type of the audio and video; when decoding playing is needed, the terminal equipment loads and analyzes the XML file with the media type and the corresponding decoding component information, matches the media type of the audio and video with the media type analyzed by the XML file, and if the media type of the audio and video is successfully matched with the media type in the XML file, acquires all decoding components corresponding to the media type in the XML file. In this way, the terminal device establishes a corresponding relationship with the decoding component capable of matching with each media type and stores the decoding component in the XML file. After the media type of the audio and video is analyzed, the media type of the audio and video is compared with the XML file, and all the components matched with the media type of the audio and video can be quickly acquired according to the corresponding relation between the media type and the decoding components in the XML file.
Furthermore, the media type of the audio and video is matched with the media type analyzed by the XML file in a character string comparison mode.
S20: and evaluating each matched decoding assembly by adopting preset factors influencing audio and video decoding playing to obtain the evaluation value of each decoding assembly.
Since the decoding of audio and video by the decoding component can be affected by a plurality of factors, for example: the decoding quality of the decoding components is affected by a plurality of factors, such as network performance, audio and video playing quality (high definition, standard definition and the like) selected by a user, configuration (CPU, display and the like) of terminal equipment, playing mode and the like, so that when the decoding components are selected, each matched decoding component needs to be evaluated, and the optimal decoding component is selected for decoding.
In this embodiment, the steps specifically include: and distributing weights and scores to a plurality of factors influencing the decoding components and forming an evaluation function, and evaluating each matched decoding component by adopting the evaluation function to obtain an evaluation value. In this way, the evaluation function that is normally set initially can evaluate each matched decoding block, and the optimum decoding block can be selected based on the evaluation value.
S30: and selecting a group of decoding components which have the highest evaluation value and can decode the audio and video to decode the audio and video.
After each matched decoding assembly is evaluated to obtain an evaluation value, a group of decoding assemblies with the highest evaluation value is selected according to the evaluation value so as to select the optimal decoding assembly to decode the audio and video, so that the decoding assemblies are selected according to the performances of the terminal equipment and the decoding assemblies, rather than selecting the decoding assemblies according to initial setting, and therefore the problem that the terminal equipment cannot select the corresponding decoding assemblies to play the audio and video and cannot play the audio and video can be solved, and great convenience is brought to users.
Considering that the hard decoding component can decode the audio and video better and reduce the occupation of a CPU, in a further mode, the method specifically comprises the following steps: if a hard solution component and a soft solution component with the same evaluation value exist, the hard solution component is preferentially selected.
According to the audio and video decoding component selection method, the decoding components are matched with the audio and video according to the performance of the terminal and the media types of the audio and video, meanwhile, each matched decoding component is evaluated according to influence factors, and a group of decoding components which have the highest evaluation value and can decode the audio and video are selected to decode the audio and video.
Meanwhile, the present invention also provides an audio/video decoding component selection system, as shown in fig. 2, the system includes:
the decoding component matching unit 100 analyzes and obtains the media type of the audio and video, matches with all components on the terminal device according to the media type, and obtains all decoding components which can be matched with the audio and video media type.
Audio and video have different media types that require different decoding components to decode. Since the terminal device may have multiple decoding components (soft or hard), the terminal device may have a single decoding component or multiple sets of decoding components for each media type. When the terminal device decodes and plays the audio and video, in order to select a decoding component capable of decoding, the decoding component matching unit 100 needs to first acquire the media type of the audio and video, match the media type of the audio and video with the decoding component on the terminal device according to the media type, and match all the decoding components capable of matching with the media type on the terminal device.
In this embodiment, the steps specifically include: the decoding component matching unit 100 receives and acquires the media type of the audio and video; when decoding playing is needed, loading and analyzing an XML file with a media type and corresponding decoding component information, matching the media type of the audio and the video with the media type analyzed by the XML file, and if the media type of the audio and the video is successfully matched with the media type in the XML file, acquiring all decoding components corresponding to the media type in the XML file. In this way, the decoding component matching unit 100 establishes a correspondence relationship with the decoding component that can be matched with each media type, and stores the correspondence relationship in the XML file. After the media type of the audio and video is analyzed, the media type of the audio and video is compared with the XML file, and all the components matched with the media type of the audio and video can be quickly acquired according to the corresponding relation between the media type and the decoding components in the XML file.
Furthermore, the decoding component matching unit 100 matches the media type of the audio and video with the media type analyzed from the XML file in a character string comparison manner.
And the decoding component evaluation unit 200 is used for evaluating each matched decoding component by adopting a preset factor influencing audio and video decoding playing, and acquiring the evaluation value of each decoding component.
Since the decoding of audio and video by the decoding component can be affected by a plurality of factors, for example: a plurality of factors may affect the decoding quality of the decoding components, such as network performance, audio and video playing quality selected by a user (high definition, standard definition, etc.), configuration of a terminal device (CPU, display, etc.), playing mode, and so on, so that when selecting a decoding component, the decoding component evaluation unit 200 needs to evaluate each matched decoding component and select the best decoding component for decoding.
In this embodiment, the decoding component evaluation unit 200 assigns weights and scores to a plurality of factors that affect the decoding components and forms an evaluation function, and evaluates each matching decoding component using the evaluation function to obtain an evaluation value. In this way, the evaluation function that is normally set initially can evaluate each matched decoding block, and the optimum decoding block can be selected based on the evaluation value.
The decoding component selecting unit 300 selects a group of decoding components which have the highest evaluation value and can decode the audio and video to decode the audio and video.
After each matched decoding component is evaluated to obtain an evaluation value, the decoding component selecting unit 300 selects a group of decoding components with the highest evaluation value according to the evaluation value so as to select the optimal decoding component to decode the audio and video, so that the decoding components are selected according to the performances of the terminal equipment and the decoding components instead of selecting the decoding components according to the initial setting, thereby avoiding the problem that the terminal equipment cannot select the corresponding decoding components to play the audio and video, so that the audio and video cannot be played, and bringing great convenience to users.
In a further mode, if there are a hard solution component and a soft solution component having the same evaluation value, the decoding component selecting unit 300 preferentially selects the hard solution component.
The audio and video decoding component selection system matches the audio and video decoding components according to the terminal performance and the media types of the audio and video, evaluates each matched decoding component according to the influence factors, and selects a group of decoding components which have the highest evaluation value and can decode the audio and video to decode the audio and video, so that the decoding components are selected according to the performance of the terminal equipment and the decoding components, rather than selecting the decoding components according to the initial setting, thereby avoiding the problem that the terminal equipment cannot select the corresponding decoding components to play the audio and video, so that the audio and video cannot be played, and bringing great convenience to users.
The audio and video decoding component selection method and system of the invention match the audio and video decoding components according to the terminal performance and the media types of the audio and video, simultaneously evaluate each matched decoding component according to the influence factors, select a group of decoding components which have the highest evaluation value and can decode the audio and video to decode the audio and video, thus selecting the decoding components according to the performance of the terminal equipment and the decoding components instead of selecting the decoding components according to the initial setting, thereby avoiding the problem that the terminal equipment can not select the corresponding decoding components to play the audio and video, so that the audio and video can not be played, and bringing great convenience to users.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. A method for selecting an audio/video decoding component is characterized by comprising the following steps:
s10: analyzing and acquiring the media type of the audio and video, and matching with all components on the terminal equipment according to the media type to acquire all decoding components which can be matched with the audio and video media type;
s20: distributing weights and scores to a plurality of factors influencing decoding components and forming an evaluation function, and evaluating each matched decoding component by adopting the evaluation function to acquire an evaluation value, wherein the plurality of factors comprise network performance, audio and video playing quality selected by a user, configuration of terminal equipment and a playing mode;
s30: selecting a group of decoding components which have the highest evaluation value and can decode the audio and the video to decode the audio and the video, and preferentially selecting a hard decoding component if a hard decoding component and a soft decoding component which have the same evaluation value exist;
wherein, the step S10 specifically includes: the terminal equipment receives and acquires the media type of the audio and video; when decoding playing is needed, the terminal equipment loads and analyzes the XML file with the media type and the corresponding decoding component information, matches the media type of the audio and video with the media type analyzed by the XML file, and if the media type of the audio and video is successfully matched with the media type in the XML file, acquires all decoding components corresponding to the media type in the XML file.
2. The method for selecting an audio/video decoding component according to claim 1, wherein the matching of the media type of the audio/video and the media type parsed from the XML file specifically comprises: and matching the media type of the audio and video with the media type analyzed by the XML file in a character string comparison mode.
3. An audio-video decoding component selection system, comprising:
the decoding component matching unit analyzes and acquires the media type of the audio and video, matches all the components on the terminal equipment according to the media type and acquires all the decoding components which can be matched with the audio and video media type;
the decoding assembly evaluation unit is used for distributing weights and scores to a plurality of factors influencing the decoding assembly and forming an evaluation function, and evaluating each matched decoding assembly by adopting the evaluation function to acquire an evaluation value, wherein the plurality of factors comprise network performance, audio and video playing quality selected by a user, configuration of terminal equipment and a playing mode;
the decoding component selection unit selects a group of decoding components which have the highest evaluation value and can decode the audio and the video to decode the audio and the video, and if a hard decoding component and a soft decoding component which have the same evaluation value exist, the decoding component selection unit preferentially selects the hard decoding component;
wherein the decoding component matching unit is specifically configured to: receiving and acquiring the media type of the audio and video; when decoding playing is needed, loading and analyzing an XML file with a media type and corresponding decoding component information, matching the media type of the audio and the video with the media type analyzed by the XML file, and if the media type of the audio and the video is successfully matched with the media type in the XML file, acquiring all decoding components corresponding to the media type in the XML file.
4. The system for selecting audio/video decoding components of claim 3, wherein the decoding component matching unit matches the media type of the audio/video with the media type analyzed from the XML file in a character string comparison manner.
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| CN105632542B (en) * | 2015-12-23 | 2019-05-28 | 小米科技有限责任公司 | Audio frequency playing method and device |
| CN108632667B (en) * | 2017-03-21 | 2019-10-22 | 腾讯科技（深圳）有限公司 | A kind of coding/decoding method and terminal of multimedia file |
| CN112087633B (en) * | 2019-06-12 | 2022-08-09 | 腾讯科技（深圳）有限公司 | Video decoding method, device and storage medium |
| CN114979772B (en) * | 2021-02-24 | 2023-05-12 | 腾讯科技（深圳）有限公司 | Decoder configuration method, decoder configuration device, medium and electronic equipment |
| CN113542883A (en) * | 2021-07-12 | 2021-10-22 | 广州浩传网络科技有限公司 | Intelligent pushing method, device and equipment for playing content of audio-video equipment |
| CN114302202B (en) * | 2021-12-22 | 2023-03-14 | 深圳创维－Rgb电子有限公司 | Audio and video screen projection method, device, equipment, system and storage medium |
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| CN101567206A (en) * | 2009-05-26 | 2009-10-28 | 北京北纬通信科技股份有限公司 | System for supporting self-adaption of decoding audio and video and method thereof |
| CN102761736A (en) * | 2011-04-29 | 2012-10-31 | 腾讯科技（深圳）有限公司 | Video decoding method and device |
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| CN102111617B (en) * | 2010-12-15 | 2012-07-11 | 广州市动景计算机科技有限公司 | Streaming media decoding method and device |
| CN102970525B (en) * | 2011-09-01 | 2015-06-24 | 深圳市快播科技有限公司 | Optimized decoding processing method, device and system of mobile terminal player |
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| CN102761736A (en) * | 2011-04-29 | 2012-10-31 | 腾讯科技（深圳）有限公司 | Video decoding method and device |
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