CN109246478A - A kind of video format conversion apparatus and method - Google Patents
A kind of video format conversion apparatus and method Download PDFInfo
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- CN109246478A CN109246478A CN201811385742.5A CN201811385742A CN109246478A CN 109246478 A CN109246478 A CN 109246478A CN 201811385742 A CN201811385742 A CN 201811385742A CN 109246478 A CN109246478 A CN 109246478A
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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
- H04N21/440218—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 transcoding between formats or standards, e.g. from MPEG-2 to MPEG-4
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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
Abstract
This application provides a kind of video format conversion apparatus, which is characterized in that described device includes: configuration module, detection module and conversion module；The configuration module is also used to for format transformation information to be sent to the conversion module for the resolution information of video data to be sent to the detection module；The detection module, for determining the location information of pixel according to the resolution information；The conversion module for selecting video output formats according to the format transformation information, and completes the conversion of video format according to the positional information.Video format conversion apparatus provided by the present application supports the mutual conversion between different video format, can be applied to different video processing scenes.Present invention also provides a kind of video format conversion methods.
Description
Technical field
The present invention relates to technical field of video processing more particularly to a kind of video format conversion apparatus and methods.
Background technique
YUV is a kind of colour coding method, and wherein Y (Luminance) indicates brightness, and U (Chrominance) is indicated
Coloration, V indicate concentration (Chroma), and YUV is widely used in each video output component.YUV is examined when to Video coding
The sensing capability for considering the mankind allows to reduce the bandwidth of coloration, that is, adjusts to every frame image of video in the horizontal direction and vertically
Oversampling ratio on direction, therefore YUV coding specifically has there are a variety of different formats:
YUV444: indicating fully sampled to every frame image, the corresponding one group of UV component of every 1 Y-component.
YUV422: indicating to up-sample every frame image in the horizontal direction the data of even number line, fully sampled in vertical direction,
The corresponding one group of UV component of every 2 Y-components.
YUV420: indicate that the data for up-sampling even number line in the horizontal direction to every frame image, vertical direction up-sample even number
Capable data, the corresponding one group of UV component of every 4 Y-components.
For the video data for using YUV color to encode, when carrying out video processing, due to by actual treatment demand or
The influence of processing equipment frequently refers to the conversion between video format, such as turns sometimes for by the video of YUV420 format
It is changed to YUV444 format or YUV422 format.In addition, in transmission transmitting terminal, needing to carry out video when carrying out transmission of video
The compression of data is to reduce the data volume of transmission, and compressed video data can be realized by the format of converting video frequency data, example
YUV422 format is such as converted into the smaller YUV420 format of data volume, the bandwidth occupied when can reduce transmission in this way is accelerated
Transmission speed, and in receiving end, the recovery of video data can be related to, i.e., restored the compressed video data received.
But video format conversion apparatus used by the prior art only supports the conversion between particular video formats, such as only
The mutual conversion being able to achieve between YUV420 format and YUV444 format can not achieve any turn between different video format
It changes, therefore causes different videos to handle scene and generally require to configure different video format conversion apparatus, be inconvenient.
Summary of the invention
In order to solve above-mentioned technical problem of the existing technology, the present invention provides a kind of video format conversion apparatus and
Method supports the mutual conversion between different video format, can be applied to different video processing scenes.
This application provides a kind of video format conversion apparatus, described device includes: configuration module, detection module and conversion
Module；
The configuration module is also used to for the resolution information of video data to be sent to the detection module by lattice
Formula transitional information is sent to the conversion module；
The detection module, for determining the location information of pixel according to the resolution information；
The conversion module, for selecting video output formats according to the format transformation information, and according to the position
The conversion of information completion video format.
Optionally, the resolution information includes:
The width of resolution ratio and the height of resolution ratio.
Optionally, the location information includes:
The line number and row number of pixel.
Optionally, the conversion module include: the first transform subblock, the second transform subblock, third transform subblock,
4th transform subblock, the 5th transform subblock and the 6th transform subblock；
First transform subblock, for YUV444 format to be converted to YUV420 format；
Second transform subblock, for YUV444 format to be converted to YUV422 format；
The third transform subblock, for YUV422 format to be converted to YUV444 format；
4th transform subblock, for YUV422 format to be converted to YUV420 format；
5th transform subblock, for YUV420 format to be converted to YUV444 format；
6th transform subblock, for YUV420 format to be converted to YUV422 format.
Optionally, the conversion module further include: selection submodule；
The selection submodule, for converting submodule from the first transform subblock, second according to the format transformation information
Corresponding son is selected in block, third transform subblock, the 4th transform subblock, the 5th transform subblock and the 6th transform subblock
Module.
Optionally, the selection submodule is also used to close other non-selected submodules.
Optionally, after the selection submodule completes selection, further includes:
The detection module is also used to send the pixel to the corresponding submodule that the selection submodule selects
The location information of point.
The embodiment of the present application also provides a kind of video format conversion methods, which comprises
The location information of pixel is determined according to resolution information；
Video output formats are selected according to format transformation information, and complete turning for video format according to the positional information
It changes.
Optionally, the location information includes:
The line number and row number of pixel.
Optionally, described that video output formats are selected according to format transformation information, specially；
YUV444 format is converted into YUV420 format；
YUV444 format is converted into YUV422 format；
YUV422 format is converted into YUV444 format；
YUV422 format is converted into YUV420 format；
YUV420 format is converted into YUV444 format；
YUV420 format is converted into YUV422 format.
Compared with prior art, the present invention has at least the following advantages:
The configuration module of video format conversion apparatus provided by the present application, for by the resolution information of video data
It is sent to the detection module, is also used to for format transformation information to be sent to the conversion module；The detection module is used for root
The location information of pixel is determined according to the resolution information；The conversion module, for being selected according to the format transformation information
Video output formats are selected, and complete the conversion of video format according to the positional information, support the phase between different video format
Mutually conversion can be applied to different video processing scenes.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The some embodiments recorded in application, for those of ordinary skill in the art, without creative efforts,
It can also be obtained according to these attached drawings other attached drawings.
Fig. 1 is a kind of schematic diagram for video format conversion apparatus that the embodiment of the present application one provides；
Fig. 2 is the schematic diagram for another video format conversion apparatus that the embodiment of the present application two provides；
Fig. 3 is a kind of flow chart for video format conversion method that the embodiment of the present application three provides.
Specific embodiment
In order to enable those skilled in the art to better understand the solution of the present invention, below in conjunction in the embodiment of the present invention
Attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only this
Invention a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art exist
Every other embodiment obtained under the premise of creative work is not made, shall fall within the protection scope of the present invention.
In order to facilitate understanding, below first specifically introduce some nouns and related notion occurred in specification.
Resolution ratio: indicating the pixel number of every frame image, is typically expressed as the width (rsl_l) and resolution ratio of resolution ratio
The highly product of (rsl_w).
Wherein rsl_l indicates the valid pixel points of the every a line of image.
Rsl_w indicates the valid pixel points of each column.
Pixel position [A, B]: indicate that the pixel is located at the line a of present frame, column b.
Mode [2:0]: 3bit variable indicates the specific format conversion of video.
One_line_end: when being high, instruction completes the input of one-row pixels point.
Column_num: row number of the current pixel point in current line.
Row_num: the line number of current pixel point in the current frame.
Embodiment one:
The embodiment of the present application one provides a kind of video format conversion apparatus, illustrates with reference to the accompanying drawing.
Referring to Fig. 1, which is a kind of schematic diagram for video format conversion apparatus that the embodiment of the present application one provides.
Described device includes: configuration module 101, detection module 102 and conversion module 103；
The configuration module 101 is also used for the resolution information of video data to be sent to the detection module 102
In format transformation information is sent to the conversion module 103.
The resolution information includes:
The width of resolution ratio and the height of resolution ratio.
The location information includes:
The line number and row number of pixel.
The detection module 102, for determining the location information of pixel according to the resolution information.
The detection module 102 divides for column detection part (column_detect) and row detection part (row_detect).
Column_detect determines the row number of current pixel point according to resolution information.
Method is, and: column_num is initialized as 0, current line input pixel number according to it is effective when, column_num+1, when
After a line end of input (one_line_end 1), column_num is reset to 0.
Row_detect determines the line number row_num of current pixel point according to resolution information.
Method is: row_num is initialized as 0.When the input of current line pixel point counts column_num=rsl_l
It waits, row_num+1 is determined as a line end of input (drawing high one_line_end), as row_num=rsl_w, at this time at this time
Determine a frame image end of input, row_num is reset to 0.
The conversion module 103, for selecting video output formats according to the format transformation information, and according to institute's rheme
Confidence breath completes the conversion of video format.
The configuration module of video format conversion apparatus provided by the present application, for by the resolution information of video data
It is sent to the detection module, is also used to for format transformation information to be sent to the conversion module；The detection module is used for root
The location information of pixel is determined according to the resolution information；The conversion module, for being selected according to the format transformation information
Video output formats are selected, and complete the conversion of video format according to the positional information, support the phase between different video format
Mutually conversion can be applied to different video processing scenes.
Embodiment two:
The embodiment of the present application two additionally provides another video format conversion apparatus, illustrates with reference to the accompanying drawing.
Referring to fig. 2, which is the schematic diagram for another video format conversion apparatus that the embodiment of the present application two provides.
The conversion module includes: the first transform subblock 201, the second transform subblock 202, third transform subblock
203, the 4th transform subblock 204, the 5th transform subblock 205 and the 6th transform subblock 206.
First transform subblock 201, for YUV444 format to be converted to YUV420 format；
Second transform subblock 202, for YUV444 format to be converted to YUV422 format；
The third transform subblock 203, for YUV422 format to be converted to YUV444 format；
4th transform subblock 204, for YUV422 format to be converted to YUV420 format；
5th transform subblock 205, for YUV420 format to be converted to YUV444 format；
6th transform subblock 206, for YUV420 format to be converted to YUV422 format.
Mode [2:0]: 3bit variable indicates the specific format conversion of video, specific:
Mode [2:0]=1 indicates that video format is converted to YUV420 from YUV444；
Mode [2:0]=2 indicates that video format is converted to YUV422 from YUV444；
Mode [2:0]=3 indicates that video format is converted to YUV444 from YUV422；
Mode [2:0]=4 indicates that video format is converted to YUV420 from YUV422；
Mode [2:0]=5 indicates that video format is converted to YUV444 from YUV420；
Mode [2:0]=6 indicates that video format is converted to YUV422 from YUV420.
The conversion module further include: selection submodule 207；
The selection submodule 207 is used for according to the format transformation information from 201, second turns of the first transform subblock
Change submodule 202, third transform subblock 203, the 4th transform subblock 204, the 5th transform subblock 205 and the 6th conversion
Corresponding submodule is selected in module 206.
The selection submodule 207, is also used to close other non-selected submodules.
The detection module 102 is also used to send institute to the corresponding submodule that the selection submodule 207 selects
State the location information of pixel.
Lower mask body introduces the working principle of each submodule:
First transform subblock 201, the submodule realize that YUV444 format is converted to YUV420 format, and in mode=
It opens and enables when 1, when mode is other values, close the module.
The design principle of the submodule is the Y data for retaining whole row/columns, and retaining even number line simultaneously is the U/V of even column
Data give up the U/V data of other row/columns.
Citing: retaining the 0th row, and the U/V data of the 0th column give up the 0th row the 1st column, and the 1st row the 0th arranges, the 1st row the 1st column
U/V data.
Generic representation are as follows: the U/V data for retaining [2n, 2n] location of pixels give up [2n, 2n+1], [2n+1,2n], [2n+
1,2n+1] the U/V data of location of pixels, n are nonnegative integer.
Second transform subblock 202, the submodule realize that YUV444 format is converted to YUV422 format, and in mode=
It opens and enables when 2, when mode is other values, close the module.
The design principle of the submodule is the Y data for retaining whole row/columns, retains the U/V data of even column, gives up odd number
The U/V data of column.
Citing: retaining the U/V data of the 0th column, gives up the U/V data of the 1st column.
Generic representation are as follows: the U/V data for retaining 2n column give up the U/V data of 2n+1 column, and n is nonnegative integer.
Third transform subblock 203, the submodule realize that YUV422 format is converted to YUV444 format, and in mode=
It opens and enables when 3, when mode is other values, close the module.
The design principle of the submodule is the Y data for retaining whole row/columns, while by the U/V data of even column, being copied to
On adjacent odd column, the video data of YUV444 format is obtained.
Citing: the U/V data of the 0th column are copied in the U/V data of the 1st column (because the odd column of YUV422 format is former
It originally is no U/V data).
Generic representation are as follows: copy to the 2n U/V data arranged in the U/V data of 2n+1 column, n is nonnegative integer.
4th transform subblock 204, the submodule realize that YUV422 format is converted to YUV420 format, and in mode=
It opens and enables when 4, when mode is other values, close the module.
The design principle of the submodule is the Y data for retaining whole row/columns, while giving up U/V number all in odd-numbered line
According to only retaining even number line is the U/V data of even column simultaneously, and then obtains the video data of YUV420 format.
Citing: by the U/V rejection of data of all column of 1,3,5,7 rows.
General expression are as follows: give up all U/V data of [2n+1] row.Only retaining pixel position is [2n, 2n]
U/V data, n are nonnegative integer.
5th transform subblock 205, the submodule realize that YUV420 format is converted to YUV444 format, and in mode=
It opens and enables when 5, when mode is other values, close the module.
The design principle of the submodule is the Y data for retaining whole row/columns, while being the U/ of even column simultaneously by even number line
V data copy on the U/V Data Position of adjacent row/column, and then obtain YUV444 video format.
Citing: the U/V data that the 0th row the 0th arranges are copied into the 0th row the 1st column, the 1st row the 0th column, the U/V of the 1st row the 1st column
On position.
General expression are as follows: it is the U/V data of [2n, 2n] by pixel position, copies to [2n, 2n+1], [2n+1,
2n], in the U/V data of the position [2n+1,2n+1], n is nonnegative integer.
6th transform subblock 206, the submodule realize that YUV420 format is converted to YUV422 format, and in mode=
It opens and enables when 6, when mode is other values, close the module.
The design principle of the submodule is the Y data for retaining whole row/columns, while by even number line, the U/V data of even column
Copy to adjacent odd-numbered line, even column position on, and then obtain YUV422 video format.
The U/V data that 0th row the 0th is arranged are copied to the 1st row the 0th column by citing
Generic representation mode are as follows: pixel position is the U/V data of [2n, 2n], copies to the U/V of the position [2n+1,2n]
In data, n is nonnegative integer.
The configuration module of video format conversion apparatus provided by the present application, for by the resolution information of video data
It is sent to the detection module, is also used to for format transformation information to be sent to the conversion module；The detection module is used for root
The location information of pixel is determined according to the resolution information；The conversion module, for being selected according to the format transformation information
Video output formats are selected, and complete the conversion of video format according to the positional information, support the phase between different video format
Mutually conversion can be applied to different video processing scenes, in addition, the detection module can be multiplexed in multiple conversion
Module, it is not necessary to configure a corresponding detection module for each transform subblock, occupy less resource, simplify design.
Embodiment three:
The video format conversion apparatus based on the above embodiment, the embodiment of the present application also provides a kind of video formats
Conversion method,
Referring to Fig. 3, which is a kind of flow chart for video format conversion method that the embodiment of the present application three provides.
The method includes the following steps are included:
S301: the location information of pixel is determined according to resolution information.
The resolution information includes:
The width of resolution ratio and the height of resolution ratio.
The location information includes:
The line number and row number of pixel.
S302: video output formats are selected according to format transformation information, and complete video format according to the positional information
Conversion.
It is described that video output formats are selected according to format transformation information, specially；
YUV444 format is converted into YUV420 format；
YUV444 format is converted into YUV422 format；
YUV422 format is converted into YUV444 format；
YUV422 format is converted into YUV420 format；
YUV420 format is converted into YUV444 format；
YUV420 format is converted into YUV422 format.
Video format conversion method provided by the embodiments of the present application can be used for described in above-described embodiment one and embodiment two
Device, support the mutual conversion between different video format, can be applied to different video processing scenes, substantially increase
The convenience of video format conversion.
It in above-described embodiment, all emphasizes particularly on different fields for the description of each embodiment, there is no the portion being described in detail in some embodiment
Point, reference can be made to the related descriptions of other embodiments.
It should be appreciated that in this application, " at least one (item) " refers to one or more, and " multiple " refer to two or two
More than a."and/or" indicates may exist three kinds of relationships, for example, " A and/or B " for describing the incidence relation of affiliated partner
It can indicate: only exist A, only exist B and exist simultaneously tri- kinds of situations of A and B, wherein A, B can be odd number or plural number.Word
Symbol "/" typicallys represent the relationship that forward-backward correlation object is a kind of "or"." at least one of following (a) " or its similar expression, refers to
Any combination in these, any combination including individual event (a) or complex item (a).At least one of for example, in a, b or c
(a) can indicate: a, b, c, " a and b ", " a and c ", " b and c ", or " a and b and c ", and wherein a, b, c can be individually, can also
To be multiple.
The above described is only a preferred embodiment of the present invention, being not intended to limit the present invention in any form.Though
So the present invention has been disclosed as a preferred embodiment, and however, it is not intended to limit the invention.It is any to be familiar with those skilled in the art
Member, without departing from the scope of the technical proposal of the invention, all using the methods and technical content of the disclosure above to the present invention
Technical solution makes many possible changes and modifications or equivalent example modified to equivalent change.Therefore, it is all without departing from
The content of technical solution of the present invention, according to the technical essence of the invention any simple modification made to the above embodiment, equivalent
Variation and modification, all of which are still within the scope of protection of the technical scheme of the invention.
Claims (10)
1. a kind of video format conversion apparatus, which is characterized in that described device includes: configuration module, detection module and modulus of conversion
Block；
The configuration module is also used to turn format for the resolution information of video data to be sent to the detection module
It changes information and is sent to the conversion module；
The detection module, for determining the location information of pixel according to the resolution information；
The conversion module, for selecting video output formats according to the format transformation information, and according to the positional information
Complete the conversion of video format.
2. video format conversion apparatus according to claim 1, which is characterized in that the resolution information includes:
The width of resolution ratio and the height of resolution ratio.
3. video format conversion apparatus according to claim 1, which is characterized in that the location information includes:
The line number and row number of pixel.
4. video format conversion apparatus according to claim 1, which is characterized in that the conversion module includes: first turn
Change submodule, the second transform subblock, third transform subblock, the 4th transform subblock, the 5th transform subblock and the 6th turn
Change submodule；
First transform subblock, for YUV444 format to be converted to YUV420 format；
Second transform subblock, for YUV444 format to be converted to YUV422 format；
The third transform subblock, for YUV422 format to be converted to YUV444 format；
4th transform subblock, for YUV422 format to be converted to YUV420 format；
5th transform subblock, for YUV420 format to be converted to YUV444 format；
6th transform subblock, for YUV420 format to be converted to YUV422 format.
5. video format conversion apparatus according to claim 4, which is characterized in that the conversion module further include: selection
Submodule；
The selection submodule, for according to the format transformation information from the first transform subblock, the second transform subblock, the
Corresponding submodule is selected in three transform subblocks, the 4th transform subblock, the 5th transform subblock and the 6th transform subblock.
6. video format conversion apparatus according to claim 5, which is characterized in that the selection submodule is also used to close
Close other non-selected submodules.
7. video format conversion apparatus according to claim 6, which is characterized in that the selection submodule completes selection
Afterwards, further includes:
The detection module is also used to send the pixel to the corresponding submodule that the selection submodule selects
Location information.
8. a kind of video format conversion method, which comprises
The location information of pixel is determined according to resolution information；
Video output formats are selected according to format transformation information, and complete the conversion of video format according to the positional information.
9. video format conversion method according to claim 7, which is characterized in that the location information includes:
The line number and row number of pixel.
10. video format conversion method according to claim 7, which is characterized in that described to be selected according to format transformation information
Video output formats are selected, specially；
YUV444 format is converted into YUV420 format；
YUV444 format is converted into YUV422 format；
YUV422 format is converted into YUV444 format；
YUV422 format is converted into YUV420 format；
YUV420 format is converted into YUV444 format；
YUV420 format is converted into YUV422 format.
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| CN109951715A (en) * | 2019-02-25 | 2019-06-28 | 北京新兴东方航空装备股份有限公司 | It is a kind of based on YUV444 image coding/decoding method H.264 |
| CN112887608A (en) * | 2021-01-27 | 2021-06-01 | 维沃移动通信有限公司 | Image processing method and device, image processing chip and electronic equipment |
| WO2021142998A1 (en) * | 2020-01-19 | 2021-07-22 | 深圳市朗强科技有限公司 | Data sending method and apparatus, data receiving method and apparatus, system, device, and computer storage medium |
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