CN111757141B - Cloud streaming media picture cutting method - Google Patents
Cloud streaming media picture cutting method Download PDFInfo
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- CN111757141B CN111757141B CN202010711555.2A CN202010711555A CN111757141B CN 111757141 B CN111757141 B CN 111757141B CN 202010711555 A CN202010711555 A CN 202010711555A CN 111757141 B CN111757141 B CN 111757141B
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- 238000005520 cutting process Methods 0.000 title claims abstract description 53
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000013507 mapping Methods 0.000 claims abstract description 28
- 239000011159 matrix material Substances 0.000 claims abstract description 21
- 230000003321 amplification Effects 0.000 claims abstract description 16
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 16
- 238000006243 chemical reaction Methods 0.000 claims abstract description 7
- 238000012545 processing Methods 0.000 claims abstract description 7
- 230000001960 triggered effect Effects 0.000 claims description 6
- 230000015654 memory Effects 0.000 claims description 3
- 238000012805 post-processing Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
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Classifications
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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
-
- 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
- H04N21/21805—Source of audio or video content, e.g. local disk arrays enabling multiple viewpoints, e.g. using a plurality of cameras
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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
- H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
- H04N21/2343—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
- H04N21/234363—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements by altering the spatial resolution, e.g. for clients with a lower screen resolution
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
- H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
- H04N5/268—Signal distribution or switching
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Databases & Information Systems (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The invention relates to a cloud streaming media picture cutting method, which comprises the steps of obtaining a first video original picture without original picture processing, a second video original picture switched by a broadcasting station and a third video original picture processed by a picture cutting array and a coding matrix, establishing mapping links among the first video original picture, the second video original picture, the third video original picture and a video playing client, enabling a user to enter picture cutting operation through the video playing client, triggering actions of the picture cutting operation to comprise video resolution adjustment and local amplification operation, wherein the picture cutting base of the scheme is not completed based on basic original pictures, the scheme utilizes front-end equipment to respectively obtain the first video original picture, the second video original picture and the third video original picture as the picture cutting base, therefore, the conversion of the mapping link can be quickly completed in the subsequent picture cutting process, so that the picture cutting process is prevented from being blocked, and the viewing experience is improved.
Description
Technical Field
The invention relates to the field of streaming media playing, in particular to a cloud streaming media picture cutting method.
Background
Streaming media refers to a media format played on the Internet in a streaming mode. Streaming media is also called streaming media, which means that a merchant sends programs as data packets to a network by using a video transmission server. After the user decompresses the data through the decompression device, the program is displayed as before transmission. In the process of transmitting a video, a shot original picture is generally sent to a background server, the server encodes the original picture according to definition selected by a user side (namely a playing software video playing client), and sends an encoded file to the video playing client and then the video playing client decompresses and plays the encoded file, namely, the step of switching definition in video playing is carried out.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a cloud streaming media picture cutting method which is mainly used for picture cutting operation in the streaming media live broadcast process.
The purpose of the invention is realized by the following technical scheme:
a method for cutting pictures by cloud streaming media comprises the following steps:
s1: obtaining an original picture, comprising:
the method comprises the steps that an unprocessed first video original picture shot by a camera set is shot;
the second video original picture shot by the camera set and switched by the director;
a third video original picture which is shot by the camera set and is subjected to post-processing of the cutting picture array and the coding array;
s2: establishing mapping links between the first video original picture, the second video original picture and the third video original picture and a video playing client; s3: entering a picture cutting operation, wherein a user enters the picture cutting operation through a video playing client, and actions for triggering the picture cutting operation comprise video resolution adjustment and local amplification operation;
in the initial state, the video playing client selects a second video original picture as a default playing picture;
when the video resolution adjustment is triggered, performing corresponding encoding operation on the first video original picture to obtain a video file with corresponding resolution to complete picture cutting operation;
when the local amplification operation is triggered, selecting the video original pictures corresponding to the local amplification area from the third video original pictures according to the local amplification area, performing corresponding coding operation to obtain the video files with the corresponding resolution, and completing picture cutting operation.
The method is different from the traditional picture cutting mode, the picture cutting foundation of the scheme is not completely finished based on the basic original picture, the scheme utilizes front-end equipment to respectively obtain a first video original picture, a second video original picture and a third video original picture which respectively represent the basic original picture, a guided original picture and a shot original picture, wherein the basic original picture is stored in a server and used as a cut picture under a resolution regulation mode, the guided original picture is played as a default playing video file, the shot original picture is used for locally displaying the cut picture, and the guided original picture and the shot original picture are preprocessed and finished, so that the conversion of a mapping link can be quickly finished in the subsequent picture cutting process, the blocking of the picture cutting process is avoided, and the viewing experience is improved.
Further, a system for implementing the method is also included, comprising:
the camera set is used for acquiring a video original picture, a video picture shot by the camera set is divided into two paths of outputs, one path of output is connected to the nonlinear editing module, and the other path of output is connected to the video switching matrix;
the nonlinear editing module is connected to a storage server, the storage server is connected with the cloud processing module, and video signals processed by the cloud processing module are uploaded to a network platform to serve as a mapping link of the first video original picture;
the output end of the video switching matrix is divided into two paths of output, one path of output is connected to the slice encoder, the other path of output is connected to the video switching matrix, and the video signals processed by the slice encoder are directly uploaded to a network platform to be used as a mapping link of a second video original picture;
the output end of the video conversion matrix is connected to the cut picture array, the output end of the cut picture array is connected to the coding array, the coding array is connected to the media cloud server, and a video signal of the media cloud server is directly uploaded to the network platform to serve as a mapping link of a third video original picture;
and the video playing client of the network platform selects the corresponding mapping link according to the user operation.
Furthermore, the video switching matrix is also connected with a station mark machine for adding the station mark into the video image.
Furthermore, the cutting array module and the coding array module are both provided with memories for temporarily storing the processed video files.
Further, the video conversion matrix is 4 × 12G or 16 × 3G, and the cropping array corresponds to a 4-channel cropping array and a 16-channel cropping array.
Furthermore, the mapping link of the first video original picture is used for outputting a video file with multiple specification resolutions encoded by the video original picture signal;
the mapping link of the second video original picture is used for outputting video files with various specifications and resolutions which are coded according to the video original picture signals switched by the director;
and the mapping link of the third video original picture selects a video original picture corresponding to the corresponding video switching matrix according to the local amplification area selected by the video playing client to encode and output.
Furthermore, the local enlargement area selected by the video playing client is based on the display picture boundary of the client playing terminal as a frame cutting frame.
The invention has the beneficial effects that: compare with traditional cutting drawing operation, this scheme provides three kinds of original paintings as cutting the drawing basis according to cutting the difference of drawing mode to accomplish corresponding cutting drawing operation at high in the clouds server in advance, and update the video in the server in real time, when triggering the corresponding cutting drawing operation, change video signal output mapping link and can accomplish and cut the drawing operation, make and cut the drawing operation and can accomplish in the twinkling of an eye, the card phenomenon can hardly appear.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention.
Detailed Description
The technical solution of the present invention is further described in detail with reference to the following specific examples, but the scope of the present invention is not limited to the following.
A method for cutting pictures by cloud streaming media comprises the following steps:
s1: obtaining an original picture, comprising:
the method comprises the steps that an unprocessed first video original picture shot by a camera set is shot;
the second video original picture shot by the camera set and switched by the director;
a third video original picture which is shot by the camera set and is subjected to post-processing of the cutting picture array and the coding array;
s2: establishing mapping links between the first video original picture, the second video original picture and the third video original picture and a video playing client; s3: entering a picture cutting operation, wherein a user enters the picture cutting operation through a video playing client, and actions for triggering the picture cutting operation comprise video resolution adjustment and local amplification operation;
in the initial state, the video playing client selects a second video original picture as a default playing picture;
when the video resolution adjustment is triggered, performing corresponding encoding operation on the first video original picture to obtain a video file with corresponding resolution to complete picture cutting operation;
when the local amplification operation is triggered, selecting the video original pictures corresponding to the local amplification area from the third video original pictures according to the local amplification area, performing corresponding coding operation to obtain the video files with the corresponding resolution, and completing picture cutting operation.
Referring to fig. 1, the embodiment further includes a system for implementing the method, including:
the camera set is used for acquiring a video original picture, a video picture shot by the camera set is divided into two paths of outputs, one path of output is connected to the nonlinear editing module, and the other path of output is connected to the video switching matrix;
the nonlinear editing module is connected to a storage server, the storage server is connected with the cloud processing module, and video signals processed by the cloud processing module are uploaded to a network platform to serve as a mapping link of the first video original picture;
the output end of the video switching matrix is divided into two paths of output, one path of output is connected to the slice encoder, the other path of output is connected to the video switching matrix, and the video signals processed by the slice encoder are directly uploaded to a network platform to be used as a mapping link of a second video original picture;
the output end of the video conversion matrix is connected to the cut picture array, the output end of the cut picture array is connected to the coding array, the coding array is connected to the media cloud server, and a video signal of the media cloud server is directly uploaded to the network platform to serve as a mapping link of a third video original picture;
and the video playing client of the network platform selects the corresponding mapping link according to the user operation.
Furthermore, the video switching matrix is also connected with a station mark machine for adding the station mark into the video image.
Furthermore, the cutting array module and the coding array module are both provided with memories for temporarily storing the processed video files.
Further, the video conversion matrix is 4 × 12G or 16 × 3G, and the cropping array corresponds to a 4-channel cropping array and a 16-channel cropping array.
Furthermore, the mapping link of the first video original picture is used for outputting a video file with multiple specification resolutions encoded by the video original picture signal;
the mapping link of the second video original picture is used for outputting video files with various specifications and resolutions which are coded according to the video original picture signals switched by the director;
and the mapping link of the third video original picture selects a video original picture corresponding to the corresponding video switching matrix according to the local amplification area selected by the video playing client to encode and output.
Furthermore, the local enlargement area selected by the video playing client is based on the display picture boundary of the client playing terminal as a frame cutting frame.
The foregoing is illustrative of the preferred embodiments of this invention, and it is to be understood that the invention is not limited to the precise form disclosed herein and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the concept as disclosed herein, either as described above or as apparent to those skilled in the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. A cloud streaming media cutting and drawing method is characterized by comprising the following steps:
s1: obtaining an original picture, comprising:
the method comprises the steps that an unprocessed first video original picture shot by a camera set is shot;
the second video original picture shot by the camera set and switched by the director;
a third video original picture which is shot by the camera set and is subjected to post-processing of the cutting picture array and the coding array;
s2: establishing mapping links between the first video original picture, the second video original picture and the third video original picture and a video playing client;
s3: entering a picture cutting operation, wherein a user enters the picture cutting operation through a video playing client, and actions for triggering the picture cutting operation comprise video resolution adjustment and local amplification operation;
in the initial state, the video playing client selects a second video original picture as a default playing picture;
when the video resolution adjustment is triggered, performing corresponding encoding operation on the first video original picture to obtain a video file with corresponding resolution to complete picture cutting operation;
when the local amplification operation is triggered, selecting the video original pictures corresponding to the local amplification area from the third video original pictures according to the local amplification area, performing corresponding coding operation to obtain the video files with the corresponding resolution, and completing picture cutting operation.
2. The method of claim 1, wherein the method is applied to a system comprising:
the camera set is used for acquiring a video original picture, a video picture shot by the camera set is divided into two paths of outputs, one path of output is connected to the nonlinear editing module, and the other path of output is connected to the video switching matrix;
the nonlinear editing module is connected to a storage server, the storage server is connected with the cloud processing module, and video signals processed by the cloud processing module are uploaded to a network platform to serve as a mapping link of the first video original picture;
the output end of the video switching matrix is divided into two paths of output, one path of output is connected to the slice encoder, the other path of output is connected to the video switching matrix, and the video signals processed by the slice encoder are directly uploaded to a network platform to be used as a mapping link of a second video original picture;
the output end of the video conversion matrix is connected to the cut picture array, the output end of the cut picture array is connected to the coding array, the coding array is connected to the media cloud server, and a video signal of the media cloud server is directly uploaded to the network platform to serve as a mapping link of a third video original picture;
and the video playing client of the network platform selects the corresponding mapping link according to the user operation.
3. The cloud streaming media cutting method according to claim 2, wherein the video switching matrix is further connected with a logo machine, and the logo machine is used for adding a logo to a video image.
4. The cloud streaming media cutting method according to claim 3, wherein the cutting array and the coding array are both configured with a memory for temporarily storing the processed video file.
5. The cloud streaming media cutting method according to claim 4, wherein the mapping link of the first video original is used for outputting video files with multiple specification resolutions encoded by video original signals;
the mapping link of the second video original picture is used for outputting video files with various specifications and resolutions which are coded according to the video original picture signals switched by the director;
and the mapping link of the third video original picture selects a video original picture corresponding to the corresponding video switching matrix according to the local amplification area selected by the video playing client to encode and output.
6. The cloud streaming media cutting method according to claim 5, wherein the local enlargement area selected by the video playing client is based on a display picture boundary of the client playing terminal as a cutting frame.
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Address after: No. 401, 4th Floor, Building 2, No. 88 Shengtong Street, Chengdu High tech Zone, China (Sichuan) Pilot Free Trade Zone, Chengdu City, Sichuan Province 610095 Patentee after: Sichuan Guochuang Innovation Vision Ultra HD Video Technology Co.,Ltd. Country or region after: China Address before: No.2, south 2nd Road, Xinyuan, high tech Zone, Chengdu, Sichuan 610000 Patentee before: Sichuan Xinshi Chuangwei ultra high definition Technology Co.,Ltd. Country or region before: China |