CN110035298B - Media quick playing method - Google Patents
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- CN110035298B CN110035298B CN201910303329.8A CN201910303329A CN110035298B CN 110035298 B CN110035298 B CN 110035298B CN 201910303329 A CN201910303329 A CN 201910303329A CN 110035298 B CN110035298 B CN 110035298B
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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
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/232—Content retrieval operation locally within server, e.g. reading video streams from disk arrays
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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
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
- H04N21/2387—Stream processing in response to a playback request from an end-user, e.g. for trick-play
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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
- H04N21/47—End-user applications
- H04N21/472—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content
- H04N21/47202—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content for requesting content on demand, e.g. video on demand
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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
- H04N21/47—End-user applications
- H04N21/472—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content
- H04N21/47217—End-user interface for requesting content, additional data or services; End-user interface for interacting with content, e.g. for content reservation or setting reminders, for requesting event notification, for manipulating displayed content for controlling playback functions for recorded or on-demand content, e.g. using progress bars, mode or play-point indicators or bookmarks
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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]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
- H04N21/835—Generation of protective data, e.g. certificates
- H04N21/8352—Generation of protective data, e.g. certificates involving content or source identification data, e.g. Unique Material Identifier [UMID]
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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]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
- H04N21/845—Structuring of content, e.g. decomposing content into time segments
- H04N21/8456—Structuring of content, e.g. decomposing content into time segments by decomposing the content in the time domain, e.g. in time segments
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Databases & Information Systems (AREA)
- Human Computer Interaction (AREA)
- Computer Security & Cryptography (AREA)
- Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The invention relates to a media quick playing method, which comprises the following steps: and clustering and segmenting the video, retrieving in a content tag field with a time pointer by inputting a query condition, and preferentially buffering and playing the video segment corresponding to the content tag of the retrieval hit result. The method and the device realize personalized query, reduce the occupation of resources such as bandwidth and memory and improve the experience of users.
Description
Technical Field
The invention relates to the field of media playing, in particular to a media quick playing method.
Background
In recent years, with the popularization of instant messaging software of mobile phones, functional applets embedded in the instant messaging software are attracting attention. The small program can be used in the environment of the instant messaging software of the mobile phone without downloading and installing. With the development of such applets, the functions of teaching video playing in applets are gradually popular with users due to the convenience of use.
The current video playing program for the small program education and teaching generally enters a video playing page by scanning a two-dimensional code and the like, and the video is played by clicking a corresponding video playing function. The existing video playing program has the following problems: 1) a great deal of searching time is needed when searching for some specific knowledge points in the teaching video, in the prior art, CN 105959809B discloses that preview of knowledge point information of each chapter can be increased, but the method cannot perform personalized searching; 2) the buffering step before playing the video often occupies a large amount of bandwidth and memory, which causes system burden and reduces playing efficiency.
In summary, it is desirable to provide a media fast playing method capable of performing personalized query, reducing resource occupation such as bandwidth and memory, and providing a good user experience.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the media fast playing method can perform personalized query, reduce resource occupation of bandwidth, memory and the like, and is good in user experience.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a media fast playing method includes clustering and segmenting videos to form a plurality of video segments, searching in a content tag field with a time pointer by inputting query conditions, and performing preferential buffering and playing on the video segments corresponding to the content tags of search hit results.
Preferably, the content tag field is a tag field of a local timeline file or a cloud index file.
Preferably, for the plurality of video segments, a first frame picture of each video segment is extracted as an index frame, the index frame is extracted while time information of the picture is extracted, and the index frames of the plurality of video segments and the time information thereof are mapped to a time axis of a pre-stored video, thereby forming a time axis file.
Preferably, the cloud index file can store the tag information at a corresponding position of a time axis in the cloud index file by receiving the tag information fed back by the client user.
Preferably, the local timeline file includes a timeline, an index frame having time pointers, and a tab field having time pointers.
Preferably, the user can select whether to play the video in an intelligent fast playing manner through an option on the client playing interface.
Preferably, if the user does not select smart fast play, the plurality of video segments are sequentially buffered and played; and if the user selects intelligent fast playing, preferentially buffering and playing the video segment corresponding to the content tag of the retrieval hit result.
Preferably, the local time axis file is retrieved first, the local time axis file has no hit result, and then the cloud index file is retrieved.
Preferably, the retrieval can be an exact match or a fuzzy match.
A media fast playing system is used for operating the media fast playing method and comprises a server end component and a client end component; the server side component includes:
the video clustering module is used for clustering all continuous frame pictures in the video through the similarity of color ratio of the video prestored in the server, and dividing the original video into a plurality of video segments;
the index generation module is used for extracting index frames, a time shaft, a previous-stage input label and generating a time shaft file and a cloud index file;
the client component includes:
the file receiving module is used for receiving the video segmentation, the time axis file and the cloud retrieval file sent by the server to the client;
the mode selection module is used for the user to confirm whether the intelligent fast playing mode is adopted for playing or not;
the query retrieval module is used for inputting retrieval keywords by a user and retrieving the local time axis file and the cloud index file;
and the label adding module is used for adding a label field at any position of the time axis by a user.
The media quick playing method provided by the invention can perform personalized query, reduce the resource occupation of bandwidth, memory and the like, and has good user experience.
Drawings
Fig. 1 is a flowchart of a media fast playing method provided by the present invention.
Detailed Description
A medium of the present invention will be described in further detail below.
The present invention will now be described in more detail with reference to the accompanying drawings, in which preferred embodiments of the invention are shown, it being understood that one skilled in the art may modify the invention herein described while still achieving the beneficial results of the present invention. Accordingly, the following description should be construed as broadly as possible to those skilled in the art and not as limiting the invention.
In the interest of clarity, not all features of an actual implementation are described. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. It will of course be appreciated that in the development of any such actual embodiment, numerous implementation-specific details must be set forth in order to achieve the developer's specific goals.
In order to make the objects and features of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. It is to be noted that the drawings are in a very simplified form and are intended to use non-precision ratios for the purpose of facilitating and clearly facilitating the description of the embodiments of the invention.
Fig. 1 is a flowchart illustrating a media fast playing method according to an embodiment of the present invention. The media fast playing method shown in fig. 1 includes the following steps:
clustering and segmenting prestored videos:
for videos prestored in a server, clustering all continuous frame pictures in the videos according to the similarity of color ratios, and firstly clustering the videos into n classes, wherein video frames in the n classes are similar, and video frames between the classes are dissimilar. And dividing the original video into n video segments according to the clustering result.
The clustering method can be selected from the commonly used clustering methods in the prior art, and preferably, the clustering can be realized by calculating the similarity of two adjacent frame images, namely accumulating the corresponding minimum values at the same index of the histograms of the two images.
Selecting an index frame, and establishing a time axis file:
and extracting the time axis information of the pre-stored video and the index frame of each video segment, and establishing a time axis file. And for the n video segments, extracting a first frame picture of each video segment as an index frame, extracting time pointer information of the first frame picture and the picture at the same time, and corresponding the index frames of the n video segments and the time pointer information thereof to a time axis of a pre-stored video so as to form a time axis file. Thus, the timeline file includes a full timeline of the video and index frames pointing to corresponding points in time on the timeline.
Meanwhile, the timeline file also includes a tab field with a time pointer. The tag field may be a blank field or a portion of pre-stored information. The tag field may be a literal code. The time pointer of the tag field may be any time point, including a time point corresponding to the index frame. Preferably, a portion of the tag field may be entered by a data handler of the content provider, for example, tag information may be added as a key knowledge point name in the instructional video. The content of the tag field is also null, and then the tag field can be recorded by a viewer after being downloaded to a video playing applet client, and a cloud index file of the server is fed back.
Step three, establishing a cloud index file:
the method comprises the steps that time axis information of a pre-stored video and a tag field with a time pointer are extracted to form a cloud index file, the tag field of the cloud index file can receive tag information fed back by a client user or information pre-input by data processing personnel of a content provider, and the tag information is stored in a corresponding position of a time axis in the cloud index file. The client user can retrieve the cloud index file through the login server so as to obtain more comprehensive keyword description of the video information, and therefore the retrieved information amount is enlarged. Especially, when a client watches the video for the first time, the client can directly search and play the corresponding video segment based on a large amount of description information collected in the cloud index file.
Step four, receiving a client playing request, and downloading the time axis file to the client:
when the server receives a playing request of the client, the video stream is not directly buffered to the client device, but only the time axis file is downloaded to the local device of the client. The local timeline file includes a timeline, an index frame having time pointers, and a tab field having time pointers. By doing so, the amount of buffered data can be appropriately reduced, and the occupation of resources is reduced.
Step five, the client user selects a playing mode:
after downloading the time axis file to the client device, the user can select whether to play the video in an intelligent fast playing mode through options on a playing interface of the client.
Preferably, the selecting action can be implemented by clicking/releasing an intelligent fast playing virtual button on the playing interface or by popping up an inquiry dialog box to select whether the video playing is performed by the intelligent fast playing mode.
Step six, if the user does not carry out intelligent fast playing, sequentially buffering and playing a plurality of video segments:
and if the client user selects not to carry out intelligent quick playing, sequentially and sectionally buffering the videos and sequentially and completely playing the videos. In the process of playing the whole video sequentially and completely, a client user can enter label field information for the video content at a specific time point, so that a mark is added to the video information at the time point, and the entered label field content is stored in a local time axis file.
Specifically, the client user can activate the add-tag dialog box to perform tag field entry at a corresponding time point by clicking, double clicking, long pressing or the like on the time axis on the video player interface. After the entry, the tag fields with the time pointers are stored in a local time axis file and are uploaded to a cloud index file. Preferably, the time axis position of the tag field may be any time point, and may also be a time point corresponding to the index frame.
Step seven, if the client user selects to carry out intelligent fast playing, at least one video segment meeting the query condition of the user is preferentially buffered and played:
when the client user selects to carry out intelligent quick playing, a query dialog box pops up on a playing interface, and the user inputs keywords of the related content which is expected to be played in the query dialog box, so that the label field of the local time axis file is retrieved.
If the keyword search on the tag field of the local timeline file has a hit result, the time pointer of the tag field of the hit result is extracted. The hit is at least one. And determining the video segment where the tag field of the at least one hit result is located through the time pointer, and preferentially requesting the server to buffer the video segment corresponding to the tag field of the at least one hit result by the client and preferentially playing the video segment. Therefore, the user can preferentially obtain the video segments to be watched, the video playing efficiency and speed are improved, and delay caused by unnecessary buffering and inquiry is avoided.
The local time axis files are preferentially searched, so that the search can be concentrated on the keywords defined by the user, the resources occupied by the search can be reduced by searching the local time axis files firstly, and the hit probability can be greatly improved by searching the self-defined keywords firstly because the user description has certain habitual property and regularity.
And if the keyword search of the tag field of the local time axis file has no hit result, the client feeds back the information of the no hit result of the local time axis file search to the server, logs in the server, and carries out the keyword search on the tag field of the cloud index file. By means of supplementary retrieval of the cloud index file, more comprehensive keyword description of the video information is obtained, and accordingly the retrieved information amount is enlarged. Especially, when a client watches the video for the first time, the client can directly search and play the corresponding video segment based on a large amount of description information collected in the cloud index file.
And if the keyword retrieval of the tag field of the cloud index file does not have a hit result, prompting the client user of no hit result through a popup window, sequentially buffering a plurality of video segments, and displaying the index frame and corresponding labels thereof on a time axis for the client user to manually select and jump. Therefore, certain basic information is provided for the user when no retrieval result is obtained, and the user can operate conveniently according to the requirement.
And if the keyword retrieval of the tag field of the cloud index file has a hit result, extracting a time pointer of the tag field of the hit result. The hit is at least one. And determining the video segment where the tag field of the at least one hit result is located through the time pointer, and preferentially requesting the server to buffer the video segment corresponding to the tag field of the at least one hit result by the client and preferentially playing the video segment. Therefore, the user can preferentially obtain the video segments to be watched, the video playing efficiency and speed are improved, and delay caused by unnecessary buffering and inquiry is avoided.
Preferably, the keyword retrieval can be in an exact matching or fuzzy matching mode.
The invention also provides a system for quickly playing media, which is provided with a server end component and a client end component. The server-side assembly comprises a video clustering module, an index generation module and a file output module.
The video clustering module is used for clustering all continuous frame pictures in the video according to the similarity of color ratio of the video prestored in the server, and the original video is divided into a plurality of video segments.
The index generation module is used for extracting index frames, a time shaft, a previous-stage input tag and generating a time shaft file and a cloud index file.
The client side component comprises a file receiving module, a mode selection module, a query retrieval module, a label adding module and a video playing module.
The file receiving module is used for receiving the video segmentation, the time axis file and the cloud retrieval file sent by the server to the client.
And the mode selection module is used for the user to confirm whether the intelligent quick playing mode is adopted for playing.
And the query retrieval module is used for inputting retrieval keywords by a user and retrieving the local time axis file and the cloud index file.
And the label adding module is used for adding a label field at any position of the time axis by a user.
The invention realizes the quick search and quick play of personalized video contents for videos with stronger specialty such as teaching videos. As can be known by those skilled in the art, if the probability of a hit result is improved by implementing a comprehensive search of a specific content, the search is often performed in a very large sample library, which often occupies more resources, and often causes a jam or an excessively large memory for a WeChat applet, and if a search sample is reduced to reduce the resource occupation, the hit probability is reduced, so that a user cannot search a corresponding content as desired. According to the method and the device, the cloud index file is successively and progressively retrieved by forming the local time axis file added by the user and the keywords collected by the network, so that resources occupied by retrieval are reduced, the hit probability is improved to the maximum extent, and the user experience of the small program video playing is improved. In addition, the user can preferentially obtain the video segments needing to be watched through keyword search, the video playing efficiency and speed are improved, and delay caused by unnecessary buffering and query is avoided.
The foregoing shows and describes the general principles, essential features and advantages of the invention, which is, therefore, described only as an example of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but rather that the invention includes various equivalent changes and modifications without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (2)
1. A media fast playing method is characterized in that: the method comprises the following steps:
clustering and segmenting prestored videos:
for videos prestored in a server, clustering all continuous frame pictures in the videos according to the similarity of color ratios, and firstly clustering the videos into n classes, wherein the video frames in the n classes are similar, and the video frames between the classes are dissimilar; dividing the original video into n video segments according to the clustering result;
selecting an index frame, and establishing a time axis file:
extracting the time axis information of the pre-stored video and the index frame of each video segment, and establishing a time axis file; the time axis file comprises a complete time axis of the video and index frames pointing to corresponding time points of the time axis; meanwhile, the timeline file also comprises a tag field with a time pointer; the label field can be a blank field or part of pre-stored information; the tag field can be input by a viewer after being downloaded to a video playing applet client, and a cloud index file of the conference server is fed back;
step three, establishing a cloud index file:
extracting time axis information of a pre-stored video and a tag field with a time pointer to form a cloud index file, wherein the tag field of the cloud index file can store the tag information in a corresponding position of a time axis in the cloud index file by receiving the tag information fed back by a client user;
step four, receiving a client playing request, and downloading the time axis file to the client:
after receiving a playing request of a client, a server does not directly buffer a video stream to client equipment, but only downloads a time axis file to client local equipment; the local timeline file includes a timeline, an index frame having time pointers, and a tab field having time pointers;
step five, the client user selects a playing mode:
after downloading the time axis file to the client device, a user can select whether to play the video in an intelligent fast playing mode through options on a playing interface of the client;
step seven, if the client user selects to carry out intelligent fast playing, at least one video segment meeting the query condition of the user is preferentially buffered and played: when a client user selects to carry out intelligent quick playing, a query dialog box pops up on a playing interface, and the user inputs keywords of related contents which are expected to be played in the query dialog box, so that the label field of the local time axis file is retrieved; if the keyword search of the tag field of the local time axis file has a hit result, extracting a time pointer of the tag field of the hit result; determining the video segment where the tag field of the at least one hit result is located through a time pointer, and preferentially requesting the server to buffer the video segment corresponding to the tag field of the at least one hit result by the client and preferentially playing the video segment; if the keyword search of the tag field of the local time axis file has no hit result, the client feeds back the information of the no hit result of the local time axis file search to the server, logs in the server, and carries out keyword search on the tag field of the cloud index file; if the keyword retrieval of the tag field of the cloud index file has a hit result, extracting a time pointer of the tag field of the hit result; and determining the video segment where the tag field of the at least one hit result is located through the time pointer, and preferentially requesting the server to buffer the video segment corresponding to the tag field of the at least one hit result by the client and preferentially playing the video segment.
2. The media fast-play method according to claim 1, wherein: step five to step seven further include step six: if the user does not do intelligent fast play, the multiple video segments are sequentially buffered and played.
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| CN103428349A (en) * | 2012-05-22 | 2013-12-04 | 小米科技有限责任公司 | Method and system for displaying messages |
| CN107484039A (en) * | 2017-08-22 | 2017-12-15 | 四川长虹电器股份有限公司 | A kind of method that streaming media on demand seek pictures are quickly shown |
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