CN107197329A - Method for video coding and device, storage medium - Google Patents
Method for video coding and device, storage medium Download PDFInfo
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- CN107197329A CN107197329A CN201710459387.0A CN201710459387A CN107197329A CN 107197329 A CN107197329 A CN 107197329A CN 201710459387 A CN201710459387 A CN 201710459387A CN 107197329 A CN107197329 A CN 107197329A
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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]
- H04N21/40—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
- H04N21/4402—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 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 or rendering scenes according to encoded video stream 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
-
- 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
- H04N21/234381—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 temporal resolution, e.g. decreasing the frame rate by frame skipping
-
- 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
- H04N21/431—Generation of visual interfaces for content selection or interaction; Content or additional data rendering
- H04N21/4318—Generation of visual interfaces for content selection or interaction; Content or additional data rendering by altering the content in the rendering process, e.g. blanking, blurring or masking an image region
-
- 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]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
- H04N21/643—Communication protocols
- H04N21/6437—Real-time Transport Protocol [RTP]
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
Abstract
The invention discloses a kind of method for video coding and device, storage medium, belong to technical field of video processing.Method includes：The target resolution of video to be encoded is determined according to the initial resolution of video to be encoded, the resolution ratio for the codified that target resolution is supported by coding side, target resolution is more than initial resolution；Inactive pixels are added for each two field picture in video to be encoded, the resolution ratio of the image after addition inactive pixels is equal to target resolution；After the image progress Video coding after to addition inactive pixels obtains code stream, addition cuts information in code stream, cuts the position that information is used to indicate inactive pixels in each two field picture.The present invention is solved in correlation technique to ensure breadth length ratio, it is necessary to which the size to each two field picture in decoded video is compressed, and the phenomenon of anamorphose is easily occurred, is caused the problem of display effect of terminal epigraph is poor.The present invention is used for Video coding.
Description
Technical field
The present invention relates to technical field of video processing, more particularly to a kind of method for video coding and device, storage medium.
Background technology
H.264 it is International Organization for standardization's (English：International Organization for
Standardization；Referred to as：ISO) and International Telecommunication Union (English：International Telecom Union；Letter
Claim：ITU the new-generation digital video compression format after MPEG4) proposed jointly.H.264 coding standard is regarded by ITU-T
Frequency Coding Experts group (English：Video Coding Experts Group；Referred to as：) and ISO/IEC dynamic image experts VCEG
Group (English：Moving Pictures Experts Group；Referred to as：MPEG joint video team (the English) constituted jointly：
Joint Video Team；Referred to as：JVT) the high compression digital video coding standard proposed, this standard is commonly known as
H.264/AVC standard.
It is compatible uneven due to the coding chip in terminal, when carrying out Video coding using H.264 coding method,
Requirement usually is had the dimensions to resolution ratio.For example, the coding chip of most of android terminals requires that the width of video is necessary
Meet the requirement (that is to say the integral multiple for carrying out the width of the video after Video coding for 16 pixels) of 16 pixels alignment, then compile
Code chip can support the Video coding that resolution ratio is 368 × 640.Therefore, resolution ratio can be typically used to be regarded for 368 × 640
Frequency coded system is encoded to video.
But, because terminal is when showing the image of video, also there is the requirement of corresponding breadth length ratio, for example, require that terminal shows
The breadth length ratio of the image shown be 9: 16, when decode and play based on resolution ratio be 368 × 640 carry out encode obtained video when,
In order to ensure the breadth length ratio, it is necessary to which the size to each two field picture in decoded video is compressed, easily there is image change
The phenomenon of shape, causes the display effect of terminal epigraph poor.
The content of the invention
In order to solve in correlation technique to ensure breadth length ratio, it is necessary to the size of each two field picture in decoded video
It is compressed, the phenomenon of anamorphose easily occurs, cause the problem of display effect of terminal epigraph is poor, the present invention is implemented
Example provides a kind of method for video coding and device, storage medium.The technical scheme is as follows：
First aspect is there is provided a kind of method for video coding, and for coding side, methods described includes：
The target resolution of the video to be encoded is determined according to the initial resolution of video to be encoded, the target is differentiated
The resolution ratio for the codified that rate is supported by the coding side, the target resolution is more than the initial resolution；
Inactive pixels are added for each two field picture in the video to be encoded, make point of the image after addition inactive pixels
Resolution is equal to the target resolution；
After the image progress Video coding after to the addition inactive pixels obtains code stream, add and cut out in the code stream
Information is cut, it is described to cut the position that information is used to indicate inactive pixels in each two field picture.
Optionally, the resolution ratio that the coding side is supported is the resolution that width is the alignment of x pixels, length is the alignment of y pixels
Rate, x and y are the integer more than 0,
The initial resolution according to video to be encoded determines the target resolution of the video to be encoded, including：
The initial resolution of the video to be encoded is obtained, the initial resolution is W × H, wherein, W waits to compile to be described
The pixel quantity of the width of code video, H is the pixel quantity of the length direction of the video to be encoded；
Calculate the target resolution of the video to be encoded according to resolution ratio calculation formula, the target resolution be W ' ×
H ', the resolution ratio calculation formula is：
W '=((W+x-1)/x) * x, H '=((H+y-1)/y) * y.
Optionally, after the image progress Video coding after to the addition inactive pixels obtains code stream, described
Addition cuts information in code stream, including：
Extract the First ray parameter set in the code stream；
Added in the presupposed information block during obtained sequential parameter information is decoded to First ray parameter set progress
Cut information；
The sequential parameter information after information is cut to addition encode obtaining the second sequence parameter set；
First ray parameter set in the code stream is replaced with into second sequence parameter set.
Optionally, after the image progress Video coding after to the addition inactive pixels obtains code stream, described
Addition cuts information in code stream, including：
Intercept the First ray parameter set in the code stream；
The First ray parameter set decode adding in the presupposed information block in obtained sequential parameter information and cut out
Cut information；
The sequential parameter information after information is cut to addition encode obtaining the second sequence parameter set；
Second sequence parameter set is added in the code stream.
Optionally, each two field picture addition inactive pixels in the video to be encoded, including：
Right side increase (W '-W) row inactive pixels of each two field picture in the video to be encoded；
Lower section increase (H '-H) row inactive pixels of each two field picture in the video to be encoded.
Optionally, each two field picture addition inactive pixels in the video to be encoded, including：
The inactive pixels of random color are added for each two field picture in the video to be encoded.
Optionally, the ratio of the pixel quantity of the pixel quantity of the width of display resolution and length direction is m：N,
The display resolution is the resolution ratio for the image that terminal supports display, and m and n are the integer more than 0,
The W is m integral multiple, and the H is n integral multiple, and described W: H=m: n.
Second aspect is there is provided a kind of video encoding/decoding method, and for decoding end, methods described includes：
The code stream for carrying and cutting information is obtained, the code stream is that coding side adds for each two field picture in video to be encoded
Plus after inactive pixels, what Video coding was obtained is carried out to the image after addition inactive pixels, the information that cuts is used to indicate institute
State the position of inactive pixels in each two field picture；
The code stream decode and obtains pending video and described cuts information；
Information is cut according to described, the inactive pixels in each two field picture in the pending video are cut out
Cut, to obtain target video.
Optionally, it is described the code stream decode obtain pending video and it is described cut information, including：
The code stream decode to obtain pending video and sequential parameter information；
Information is cut described in being extracted from the presupposed information block of the sequential parameter information.
The third aspect is there is provided a kind of video coding apparatus, and for coding side, described device includes：
Determining module, for determining that the target of the video to be encoded is differentiated according to the initial resolution of video to be encoded
Rate, the resolution ratio for the codified that the target resolution is supported by the coding side, the target resolution is more than described first
Beginning resolution ratio；
First add module, for adding inactive pixels for each two field picture in the video to be encoded, makes addition nothing
The resolution ratio for imitating the image after pixel is equal to the target resolution；
Second add module, for being carried out in the image after to the addition inactive pixels after Video coding obtains code stream,
Addition cuts information in the code stream, described to cut the position that information is used to indicate inactive pixels in each two field picture.
Optionally, the resolution ratio that the coding side is supported is the resolution that width is the alignment of x pixels, length is the alignment of y pixels
Rate, x and y are the integer more than 0,
The determining module, is used for：
The initial resolution of the video to be encoded is obtained, the initial resolution is W × H, wherein, W waits to compile to be described
The pixel quantity of the width of code video, H is the pixel quantity of the length direction of the video to be encoded；
Calculate the target resolution of the video to be encoded according to resolution ratio calculation formula, the target resolution be W ' ×
H ', the resolution ratio calculation formula is：
W '=((W+x-1)/x) * x, H '=((H+y-1)/y) * y.
Optionally, second add module, is used for：
Extract the First ray parameter set in the code stream；
Added in the presupposed information block during obtained sequential parameter information is decoded to First ray parameter set progress
Cut information；
The sequential parameter information after information is cut to addition encode obtaining the second sequence parameter set；
First ray parameter set in the code stream is replaced with into second sequence parameter set.
Optionally, second add module, is used for：
Intercept the First ray parameter set in the code stream；
The First ray parameter set decode adding in the presupposed information block in obtained sequential parameter information and cut out
Cut information；
The sequential parameter information after information is cut to addition encode obtaining the second sequence parameter set；
Second sequence parameter set is added in the code stream.
Optionally, first add module, is used for：
Right side increase (W '-W) row inactive pixels of each two field picture in the video to be encoded；
Lower section increase (H '-H) row inactive pixels of each two field picture in the video to be encoded.
Optionally, first add module, is used for：
The inactive pixels of random color are added for each two field picture in the video to be encoded.
Optionally, the ratio of the pixel quantity of the pixel quantity of the width of display resolution and length direction is m：N,
The display resolution is the resolution ratio for the image that terminal supports display, and m and n are the integer more than 0,
The W is m integral multiple, and the H is n integral multiple, and the W：H=m：n.
Fourth aspect is there is provided a kind of video decoder, and for decoding end, described device includes：
Acquisition module, the code stream for cutting information is carried for obtaining, and the code stream is coding side in video to be encoded
Each two field picture addition inactive pixels after, Video coding is carried out to the image after addition inactive pixels and obtained, it is described to cut
Information is used for the position for indicating inactive pixels in each two field picture；
Decoder module, obtains pending video and described cuts information for the code stream decode；
Module is cut, for cutting information according to, described in each two field picture in the pending video
Inactive pixels are cut, to obtain target video.
Optionally, the decoder module, is used for：
The code stream decode to obtain pending video and sequential parameter information；
Information is cut described in being extracted from the presupposed information block of the sequential parameter information.
There is provided a kind of video coding apparatus in terms of 5th, including：
Processor；
For the memory for the executable instruction for storing the processor；
Wherein, the processor is configured as：
The target resolution of the video to be encoded is determined according to the initial resolution of video to be encoded, the target is differentiated
The resolution ratio for the codified that rate is supported by coding side, the target resolution is more than the initial resolution；
Inactive pixels are added for each two field picture in the video to be encoded, make point of the image after addition inactive pixels
Resolution is equal to the target resolution；
After the image progress Video coding after to the addition inactive pixels obtains code stream, add and cut out in the code stream
Information is cut, it is described to cut the position that information is used to indicate inactive pixels in each two field picture.
There is provided a kind of video decoder in terms of 6th, including：
Processor；
For the memory for the executable instruction for storing the processor；
Wherein, the processor is configured as：
The code stream for carrying and cutting information is obtained, the code stream is that coding side adds for each two field picture in video to be encoded
Plus after inactive pixels, what Video coding was obtained is carried out to the image after addition inactive pixels, the information that cuts is used to indicate institute
State the position of inactive pixels in each two field picture；
The code stream decode and obtains pending video and described cuts information；
Information is cut according to described, the inactive pixels in each two field picture in the pending video are cut out
Cut, to obtain target video.
7th aspect is described when the instruction in the storage medium is by computing device there is provided a kind of storage medium
Processor is able to carry out any described method for video coding of first aspect.
Eighth aspect is described when the instruction in the storage medium is by computing device there is provided a kind of storage medium
Processor is able to carry out any described video encoding/decoding method of second aspect.
The beneficial effect that technical scheme provided in an embodiment of the present invention is brought is：
Method for video coding and device provided in an embodiment of the present invention, storage medium, coding side can be regarded according to be encoded
The initial resolution of frequency determines the target resolution for the codified that coding side is supported, and is each frame figure in video to be encoded
As addition inactive pixels, coding side is carried out Video coding to the image after addition inactive pixels, obtain after code stream, then
Added in code stream and cut information for indicate the position of inactive pixels in each two field picture, code stream is decoded in decoding end
When, the image after being cut according to information output is cut so that the resolution recovery of output image to initial resolution, without
Size to each two field picture in decoded video is compressed, and is not in the phenomenon of anamorphose, it is ensured that image
Display effect in terminal.
Brief description of the drawings
Fig. 1 is a kind of flow chart of method for video coding provided in an embodiment of the present invention；
Fig. 2 is a kind of flow chart of video encoding/decoding method provided in an embodiment of the present invention；
Fig. 3-1 is a kind of flow chart of video coding-decoding method provided in an embodiment of the present invention；
Fig. 3-2 is a kind of schematic diagram for adding invalid information provided in an embodiment of the present invention；
Fig. 3-3 is the method flow diagram that a kind of addition in the first code stream provided in an embodiment of the present invention cuts information；
Fig. 3-4 is the method flow diagram that another addition in the first code stream provided in an embodiment of the present invention cuts information；
Fig. 3-5 is a kind of schematic diagram of image displayed on the terminals in correlation technique；
Fig. 3-6 is a kind of schematic diagram of image displayed on the terminals provided in an embodiment of the present invention；
Fig. 4 is a kind of structural representation of video coding apparatus provided in an embodiment of the present invention；
Fig. 5 is a kind of structural representation of video decoder provided in an embodiment of the present invention.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to embodiment party of the present invention
Formula is described in further detail.
Video coding provided in an embodiment of the present invention, coding/decoding method are applied to processing system for video, the processing system for video
Including coding side and at least one decoding end.
Wherein, the coding side and decoding end can be located in terminal, and terminal can be smart mobile phone, computer, multimedia
Player, electronic reader, wearable device etc., coding side and decoding end can realize its work(by the operating system of terminal
Can, or its function is realized by client.
Example, when the main broadcaster of a certain live platform is in net cast, coding side is located at straight for main broadcaster's progress video
The main broadcaster's terminal broadcast, main broadcaster's terminal acts the corresponding code stream of video for generating certain definition, the main broadcaster by Video coding
Terminal can for watching the decoder on live vlewer terminals (decoder is located in operating system or client)
To realize the function of decoding end, the decoding end is by the way that to code stream decoding, regarding for certain definition can be played on the terminal
Frequently.
It should be noted that Video coding provided in an embodiment of the present invention, coding/decoding method can apply to H.264/AVC
The improvement of standard.
Fig. 1 is a kind of flow chart of method for video coding provided in an embodiment of the present invention, can be used for processing system for video
In coding side, as shown in figure 1, this method can include：
Step 101, the target resolution for determining according to the initial resolution of video to be encoded video to be encoded, the target point
The resolution ratio for the codified that resolution is supported by coding side, target resolution is more than initial resolution.
Step 102, be video to be encoded in each two field picture addition inactive pixels, make the image after addition inactive pixels
Resolution ratio be equal to target resolution.
Step 103, carry out in the image after to addition inactive pixels after Video coding obtains code stream, adding and cutting out in code stream
Information is cut, this cuts the position that information is used to indicate inactive pixels in each two field picture.
In summary, method for video coding provided in an embodiment of the present invention, can be according to the initial resolution of video to be encoded
Rate determines the target resolution for the codified that coding side is supported, and adds invalid picture for each two field picture in video to be encoded
Element, enables coding side to carry out Video coding to the image after addition inactive pixels, obtains after code stream, then addition is used in code stream
Information is cut in indicate the position of inactive pixels in each two field picture, can basis when decoding end is decoded to code stream
The image after information output is cut is cut so that the resolution recovery of output image to initial resolution, without to decoded
The size of each two field picture in video is compressed, and is not in the phenomenon of anamorphose, it is ensured that image is in terminal
Display effect.
Fig. 2 is a kind of flow chart of video encoding/decoding method provided in an embodiment of the present invention, can be used for processing system for video
Decoding end, as shown in Fig. 2 this method can include：
Step 201, acquisition carry the code stream for cutting information, and the code stream is that coding side is each frame in video to be encoded
After image addition inactive pixels, what Video coding was obtained is carried out to the image after addition inactive pixels, cutting information is used to indicate
The position of inactive pixels in each two field picture.
Step 202, code stream decode obtain pending video and cut information.
Step 203, basis cut information, and the inactive pixels in each two field picture in pending video are cut,
To obtain target video.
Wherein, the resolution ratio of the image after addition inactive pixels is equal to target resolution, and the target resolution is coding side
The resolution ratio for the codified supported, target resolution is more than the initial resolution of video to be encoded.
In summary, video encoding/decoding method provided in an embodiment of the present invention, decoding end, which can obtain to carry, cuts information
Code stream, and the code stream decode obtain pending video and cutting information, further according to information is cut, to pending video
In each two field picture in inactive pixels cut, be equal to the resolution ratio of each two field picture in the target video of output
The resolution ratio of each two field picture in video to be encoded, is pressed without the size to each two field picture in decoded video
Contracting, is not in the phenomenon of anamorphose, it is ensured that display effect of the image in terminal.
Fig. 3-1 is a kind of flow chart of video coding-decoding method provided in an embodiment of the present invention, be can apply at video
Reason system, as shown in figure 3-1, this method can include：
Step 301, coding side determine the target resolution of video to be encoded according to the initial resolution of video to be encoded, should
The resolution ratio for the codified that target resolution is supported by coding side, target resolution is more than initial resolution.
Assuming that coding side support resolution ratio be width be x pixels alignment, length be y pixels alignment resolution ratio, namely
The integral multiple that the pixel quantity for being the width of target resolution is x, the pixel quantity of length direction is y integral multiple, its
In, x and y are the integer more than 0.
Accordingly, determine that the method for the target resolution of video to be encoded can be with according to the initial resolution of video to be encoded
Including：
S11, the initial resolution for obtaining video to be encoded, the initial resolution are W × H, wherein, W is video to be encoded
Width pixel quantity, H for video to be encoded length direction pixel quantity.
Example, it is assumed that the ratio of the pixel quantity of the width of display resolution and the pixel quantity of length direction is
m：N, m and n are the integer more than 0, and the display resolution is the resolution ratio for the image that terminal supports display, be that is to say, terminal
When the resolution ratio of the image of display is display resolution, terminal can intactly show the image on display interface, without right
Image is cut or compressed, and W is m integral multiple, and H is n integral multiple, and W: H=m: n.
For example, terminal supports the pixel quantity and the pixel count of length direction of the width of the resolution ratio of the image of display
The ratio of amount be 9: 16, when terminal need play intermediate resolution video when, coding side obtain video to be encoded it is initial
Resolution ratio can be 360 × 640.
S12, the target resolution for calculating according to resolution ratio calculation formula video to be encoded, the target resolution be W ' ×
H ', resolution ratio calculation formula is：
W '=((W+x-1)/x) * x, H '=((H+y-1)/y) * y.
The target resolution for calculating video to be encoded using above-mentioned resolution ratio calculation formula is more than or equal to initial resolution
Rate, and the target resolution is the resolution ratio in the resolution ratio of coding side support closest to initial resolution.
Illustrated with the example in S11, it is assumed that the resolution ratio that coding side is supported is that width is that 16 pixels are alignd, length is
16 pixels alignment resolution ratio, then resolution ratio calculation formula can be：
W '=((360+15)/16) * 16, H '=((640+15)/16) * 16.
W '=368, H '=640 can be calculated according to radix-2 algorithm, it is thus determined that target resolution be 368 ×
640。
Step 302, coding side are each two field picture addition inactive pixels in video to be encoded, are made after addition inactive pixels
Image resolution ratio be equal to target resolution.
For example, right side increase (W '-W) row inactive pixels of each two field picture that can be in video to be encoded；Waiting to compile
Lower section increase (H '-H) row inactive pixels of each two field picture in code video.The embodiment of the present invention is in video to be encoded
The position for increasing inactive pixels in each two field picture is not limited.
By taking the example in step 301 as an example, the initial resolution of video to be encoded is 360 × 640, and target minute mark rate is
368 × 640, then the right side of each two field picture that can be in video to be encoded increases by 8 row inactive pixels, as shown in figure 3-2, treats
The pixel region of image in encoded video is H, and the region where increased inactive pixels is W.
Optionally, the inactive pixels for being each two field picture addition in video to be encoded can be the invalid picture of random color
Element or blank pixel, it is therefore an objective to the resolution ratio of the image after addition inactive pixels is met the requirement of coding side coding,
Therefore the embodiment of the present invention is not limited the color of the inactive pixels of addition.
In the embodiment of the present invention, it is assumed that the code stream obtained to the image progress Video coding after addition inactive pixels is first
Code stream, addition cuts information in code stream, that is to say that addition cuts information in the first code stream, addition cuts the code stream after information
For the second code stream, specific explanations may be referred to following step 303 to step 307.
Step 303, coding side carry out Video coding to the image after addition inactive pixels and obtain the first code stream.
Existing method may be referred to the specific method that image progress Video coding obtains the first code stream, the present invention is implemented
Example will not be described here.
Step 304, coding side are added in the first code stream to be cut information and obtains the second code stream, and this, which cuts information, is used to indicate
The position of inactive pixels in each two field picture.
Optionally, coding side is added in the first code stream cuts the method for information and can have a variety of, the embodiment of the present invention with
Illustrated exemplified by following two methods, including：
The first adds the method for cutting information in the first code stream, as shown in Fig. 3-3, including：
Step 41a, the First ray parameter set extracted in the first code stream.
The code stream that coding side coding is obtained includes First ray parameter set (English：Sequence Parameter Set；
Referred to as：SPS), the corresponding image parameter information of image after addition inactive pixels, the image are included in First ray parameter set
Parameter information includes the length of image and the width of image.
When using H.264 coding standard, code stream includes SPS, picture parameter set (English：Picture parameter
set；Referred to as：PPS) and key frame (key frame correspondence image content information), sequence parameter set is located at before each key frame,
Sequence parameter set includes picture format information, coding parameter information and image parameter information etc., and such as coding parameter information can be with
In the Crop block of informations of sequence parameter set, the Crop block of informations are used to indicate that decoding end enters the image in output image
What row was cut cuts position.
It should be noted that extracting after the First ray parameter set in the first code stream, first sequence is still preserved in code stream
Row parameter set.
Step 42a, in carrying out decoding the presupposed information block in obtained sequential parameter information to First ray parameter set
Addition cuts information.
Coding side is entered after the First ray parameter set in extracting the first code stream by decoder to First ray parameter set
Row decoding, obtains sequential parameter information, and the middle addition of presupposed information block (such as Crop block of informations) in sequential parameter information
Information is cut, for example, may be referred to the example in step 302, the position for cutting information and being used to indicate inactive pixels is the 361st
To 368 row, that is to say the pixel in Fig. 3-2 in the W of region is inactive pixels.
Step 43a, the sequential parameter information after information is cut to addition encode and obtain the second sequence parameter set.
Wherein, the second sequential parameter concentrates the corresponding image parameter information of image included after addition inactive pixels, with
And for indicating that the position of inactive pixels in each two field picture cuts information.
Step 44a, the First ray parameter set in code stream replaced with into the second sequence parameter set.
Due to coding of the coding to sequential parameter information independently of the content to each two field picture, therefore by code stream
First ray parameter set replaces with the second sequence parameter set, the sequence parameter set that have updated in code stream is that is to say, to shown in Fig. 3-2
Region H in pixel will not produce influence, that is to say the content for each two field picture treated in encoded video will not produce shadow
Ring.
Second in the first code stream add cut information method, as shown in Figure 3-4, including：
First ray parameter set in step 41b, interception code stream.
It should be noted that intercepting after the First ray parameter set in the first code stream, the First ray is not present in code stream
Parameter set.
Step 42b, First ray parameter set decode added in presupposed information block in obtained sequential parameter information
Plus cut information.
Step 43b, the sequential parameter information after information is cut to addition encode and obtain the second sequence parameter set；
Step 44b, by the second sequence parameter set be added to code stream in.
It should be noted that the position that the second sequence parameter set can be added to where former First ray parameter set.
Step 41b to step 44b specific explanations may be referred to above-mentioned 41a to step 44a, and the embodiment of the present invention is herein not
Repeat.
Step 305, coding side send to carry in the second code stream, second code stream to decoding end cuts information.
Optionally, coding side can pass through RTP (English：Real-time Transport Protocol；
Referred to as：RTP) mode transmits the second code stream to decoding end, and specific transmission means may be referred to prior art, the embodiment of the present invention pair
The transmission means of code stream is not limited.
The second code stream that step 306, decoding end cut information to carrying is decoded, and is obtained pending video and is cut
Information.
Optionally, decoding end cuts the second code stream of information to carrying and decoded, and obtains pending video and cuts
The method of information can include：
S61, second code stream is carried out to decode and obtain pending video and sequential parameter information.
Wherein, sequential parameter information is obtained to the decoding of the second sequence parameter set, to the corresponding code of content of each two field picture
Stream progress, which is decoded, obtains pending video.
S62, from the presupposed information block of sequential parameter information extract cut information.
Step 307, decoding end cut information according to this, and the inactive pixels in each two field picture in pending video are entered
Row is cut, and obtains target video.
Optionally, decoding end can be invalid to this according to the position for cutting inactive pixels in each two field picture that information is indicated
Information is cut, and the resolution ratio of the target video finally given is equal to initial resolution, therefore terminal can be in display interface
On intactly play each two field picture in the target video.
Example, using the decoding method in correlation technique, the display resolution of such as terminal is 360 × 640, coding
The resolution ratio for holding the video of coding is 368 × 640, it is necessary to video when the video of decoding end output is shown in terminal
In each two field picture carry out transverse compression, the image shown in terminal can be deformed, and cause the image fault of display；Or, solution
The video of code end output in terminal when being shown, it is necessary to be cut to each two field picture in video, such as Fig. 3-5 institutes
Show, the image shown in terminal can be imperfect, compared with Fig. 3-6, the region Q in the dotted line frame in Fig. 3-6 is shown in figs. 3-5
When be cut, cause the display effect of image poor.And use video coding-decoding method provided in an embodiment of the present invention, by
Inactive pixels are added in video to be encoded, the resolution ratio for making the video of coding side coding is 368 × 640, and decoding end is regarded in output
During frequency, the inactive pixels that coding side is added are cut according to the information that cuts that the sequential parameter of code stream is concentrated, output is regarded
The resolution ratio of frequency is the display resolution 360 × 640 of terminal, and Fig. 3-6 shows for one kind provided in an embodiment of the present invention in terminal
The schematic diagram of diagram picture, as seen in figures 3-6, each two field picture in the video can intactly show on the display interface of terminal
Show, it is ensured that the display effect of terminal epigraph.
It should be noted that the sequencing of video coding-decoding method step provided in an embodiment of the present invention can be fitted
Work as adjustment, step according to circumstances can also accordingly be increased and decreased, and any one skilled in the art takes off in the disclosure
In the technical scope of dew, the method that can readily occur in change should all cover within the protection domain of the disclosure, therefore no longer go to live in the household of one's in-laws on getting married
State.
In summary, video coding-decoding method provided in an embodiment of the present invention, can be first to be each in video to be encoded
Two field picture adds inactive pixels, coding side is carried out Video coding to the image after addition inactive pixels, in code stream
When sequence parameter set re-starts coding, concentrated in sequential parameter and be incorporated into and cut information, decoding end when to code stream decoding, according to
The information that cuts that sequential parameter is concentrated cuts inactive pixels, obtains target video, the resolution ratio of the target video can be any
Resolution ratio, solve in correlation technique due to can be carried out caused by the compatibility issue of coding side the resolution ratio of Video coding by
The problem of limitation, realize the video of arbitrary resolution and can be entered after Video coding is carried out in terminal with the arbitrary resolution
Row is played, and decoding end is compressed without the size to each two field picture in decoded video, is not in that image becomes
The phenomenon of shape, it is ensured that display effect of each two field picture in terminal in video.
The embodiments of the invention provide a kind of video coding apparatus 400, for coding side, as shown in figure 4, the device 400
It can include：
Determining module 401, the target resolution for determining video to be encoded according to the initial resolution of video to be encoded,
The resolution ratio for the codified that the target resolution is supported by coding side, the target resolution is more than initial resolution.
First add module 402, for adding inactive pixels for each two field picture in video to be encoded, makes addition invalid
The resolution ratio of image after pixel is equal to target resolution.
Second add module 403, for being carried out in the image after to addition inactive pixels after Video coding obtains code stream,
Addition cuts information in code stream, and this cuts the position that information is used to indicate inactive pixels in each two field picture.
In summary, video coding apparatus provided in an embodiment of the present invention, can be regarded by determining module according to be encoded
The initial resolution of frequency determines the target resolution for the codified that coding side is supported, and is to be encoded by the first add module
Each two field picture addition inactive pixels in video, enable coding side to carry out video volume to the image after addition inactive pixels
Code, is obtained after code stream, then the position for indicating inactive pixels in each two field picture is added in code stream by the second add module
That puts cuts information, when decoding end is decoded to code stream, the image after being cut according to information output is cut so that defeated
Go out the resolution recovery of image to initial resolution, pressed without the size to each two field picture in decoded video
Contracting, is not in the phenomenon of anamorphose, it is ensured that display effect of the image in terminal.
Wherein, the resolution ratio that coding side is supported is the resolution ratio that width is the alignment of x pixels, length is the alignment of y pixels, x and y
It is the integer more than 0,
Accordingly, determining module can be used for：
The initial resolution of video to be encoded is obtained, the initial resolution is W × H, wherein, W is the width of video to be encoded
The pixel quantity in direction is spent, H is the pixel quantity of the length direction of video to be encoded；Calculate and treat further according to resolution ratio calculation formula
The target resolution of encoded video, the target resolution is W ' × H ', and resolution ratio calculation formula is：
W '=((W+x-1)/x) * x, H '=((H+y-1)/y) * y.
Optionally, the second add module can be used for：
Extract the First ray parameter set in code stream；First ray parameter set is being carried out to decode obtained sequential parameter letter
Addition cuts information in presupposed information block in breath；The sequential parameter information after information is cut to addition encode obtaining second
Sequence parameter set；First ray parameter set in code stream is replaced with into the second sequence parameter set.
Optionally, the second add module can be also used for：
Intercept the First ray parameter set in code stream；First ray parameter set is carried out to decode obtained sequential parameter information
In presupposed information block in addition cut information；The sequential parameter information after information is cut to addition encode obtaining the second sequence
Row parameter set；Second sequence parameter set is added in code stream.
Wherein, the first add module can be used for：
Right side increase (W '-W) row inactive pixels of each two field picture in video to be encoded；In video to be encoded
Lower section increase (H '-H) row inactive pixels of each two field picture.
First add module can be also used for：
The inactive pixels of random color are added for each two field picture in video to be encoded.
It should be noted that the width of display resolution pixel quantity and length direction pixel quantity ratio
For m: n, the display resolution is the resolution ratio for the image that terminal supports display, and m and n are the integer more than 0, and W is m integer
Times, H is n integral multiple, and W: H=m: n.
In summary, video coding apparatus provided in an embodiment of the present invention, can be regarded by determining module according to be encoded
The initial resolution of frequency determines the target resolution for the codified that coding side is supported, and is to be encoded by the first add module
Each two field picture addition inactive pixels in video, enable coding side to carry out video volume to the image after addition inactive pixels
Code, is obtained after code stream, then the position for indicating inactive pixels in each two field picture is added in code stream by the second add module
That puts cuts information, when decoding end is decoded to code stream, the image after being cut according to information output is cut so that defeated
Go out the resolution recovery of image to initial resolution, pressed without the size to each two field picture in decoded video
Contracting, is not in the phenomenon of anamorphose, it is ensured that display effect of the image in terminal.
The embodiments of the invention provide a kind of video decoder 500, for decoding end, as shown in figure 5, the device 500
It can include：
Acquisition module 501, the code stream for cutting information is carried for obtaining, and the code stream is coding side in video to be encoded
Each two field picture addition inactive pixels after, Video coding is carried out to the image after addition inactive pixels and obtained, this cuts letter
Cease the position for indicating inactive pixels in each two field picture.
Decoder module 502, obtains pending video and cutting information for code stream decode.
Module 503 is cut, for according to information is cut, entering to the inactive pixels in each two field picture in pending video
Row is cut, to obtain target video.
Wherein, decoder module can be used for：
Code stream decode to obtain pending video and sequential parameter information；From the presupposed information block of sequential parameter information
Middle extraction cuts information.
In summary, video decoder provided in an embodiment of the present invention, decoding end can be obtained by acquisition module and taken
With the code stream for cutting information, and the code stream decode by decoder module obtain pending video and cutting information, then
By cutting module according to information is cut, the inactive pixels in each two field picture in pending video are cut, made defeated
The resolution ratio of each two field picture in the target video gone out is equal to the resolution ratio of each two field picture in video to be encoded, without right
The size of each two field picture in decoded video is compressed, and is not in the phenomenon of anamorphose, it is ensured that image exists
Display effect in terminal.
On the device in above-described embodiment, wherein modules perform the concrete mode of operation in relevant this method
Embodiment in be described in detail, explanation will be not set forth in detail herein.
The embodiments of the invention provide a kind of video coding apparatus, including：
Processor；
For the memory for the executable instruction for storing the processor；
Wherein, the processor is configured as：
The target resolution of the video to be encoded is determined according to the initial resolution of video to be encoded, the target is differentiated
The resolution ratio for the codified that rate is supported by coding side, the target resolution is more than the initial resolution；
Inactive pixels are added for each two field picture in the video to be encoded, make point of the image after addition inactive pixels
Resolution is equal to the target resolution；
After the image progress Video coding after to the addition inactive pixels obtains code stream, add and cut out in the code stream
Information is cut, it is described to cut the position that information is used to indicate inactive pixels in each two field picture.
The embodiments of the invention provide a kind of video decoder, including：
Processor；
For the memory for the executable instruction for storing the processor；
Wherein, the processor is configured as：
The code stream for carrying and cutting information is obtained, the code stream is that coding side adds for each two field picture in video to be encoded
Plus after inactive pixels, what Video coding was obtained is carried out to the image after addition inactive pixels, the information that cuts is used to indicate institute
State the position of inactive pixels in each two field picture；
The code stream decode and obtains pending video and described cuts information；
Information is cut according to described, the inactive pixels in each two field picture in the pending video are cut out
Cut, to obtain target video.
The embodiments of the invention provide a kind of storage medium, when the instruction in the storage medium is by computing device,
The processor is able to carry out the method for video coding that above-described embodiment is related to, example, and this method can include：
The target resolution of the video to be encoded is determined according to the initial resolution of video to be encoded, the target is differentiated
The resolution ratio for the codified that rate is supported by coding side, the target resolution is more than the initial resolution；
Inactive pixels are added for each two field picture in the video to be encoded, make point of the image after addition inactive pixels
Resolution is equal to the target resolution；
After the image progress Video coding after to the addition inactive pixels obtains code stream, add and cut out in the code stream
Information is cut, it is described to cut the position that information is used to indicate inactive pixels in each two field picture.
The embodiments of the invention provide a kind of storage medium, when the instruction in the storage medium is by computing device,
The processor is able to carry out the video encoding/decoding method that above-described embodiment is related to, example, and this method can include：
The code stream for carrying and cutting information is obtained, the code stream is that coding side adds for each two field picture in video to be encoded
Plus after inactive pixels, what Video coding was obtained is carried out to the image after addition inactive pixels, the information that cuts is used to indicate institute
State the position of inactive pixels in each two field picture；
The code stream decode and obtains pending video and described cuts information；
Information is cut according to described, the inactive pixels in each two field picture in the pending video are cut out
Cut, to obtain target video.
One of ordinary skill in the art will appreciate that realizing that all or part of step of above-described embodiment can be by hardware
To complete, the hardware of correlation can also be instructed to complete by program, described program can be stored in a kind of computer-readable
In storage medium, storage medium mentioned above can be read-only storage, disk or CD etc..
The foregoing is only the present invention alternative embodiment, be not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.
Claims (10)
1. a kind of method for video coding, it is characterised in that for coding side, methods described includes：
The target resolution of the video to be encoded is determined according to the initial resolution of video to be encoded, the target resolution is
The resolution ratio for the codified that the coding side is supported, the target resolution is more than the initial resolution；
Inactive pixels are added for each two field picture in the video to be encoded, make the resolution ratio of the image after addition inactive pixels
Equal to the target resolution；
After the image progress Video coding after to the addition inactive pixels obtains code stream, addition cuts letter in the code stream
Breath, it is described to cut the position that information is used to indicate inactive pixels in each two field picture.
2. according to the method described in claim 1, it is characterised in that the resolution ratio that the coding side is supported is that width is x pixels
Alignment, length are the resolution ratio that y pixels are alignd, and x and y are the integer more than 0,
The initial resolution according to video to be encoded determines the target resolution of the video to be encoded, including：
Obtain the initial resolution of the video to be encoded, the initial resolution is W × H, wherein, W to be encoded regards to be described
The pixel quantity of the width of frequency, H is the pixel quantity of the length direction of the video to be encoded；
The target resolution of the video to be encoded is calculated according to resolution ratio calculation formula, the target resolution is W ' × H ',
The resolution ratio calculation formula is：
W '=((W+x-1)/x) * x, H '=((H+y-1)/y) * y.
3. according to the method described in claim 1, it is characterised in that the image after to the addition inactive pixels is carried out
Video coding is obtained after code stream, and addition cuts information in the code stream, including：
Extract the First ray parameter set in the code stream；
Add and cut in the presupposed information block during obtained sequential parameter information is decoded to First ray parameter set progress
Information；
The sequential parameter information after information is cut to addition encode obtaining the second sequence parameter set；
First ray parameter set in the code stream is replaced with into second sequence parameter set.
4. according to the method described in claim 1, it is characterised in that the image after to the addition inactive pixels is carried out
Video coding is obtained after code stream, and addition cuts information in the code stream, including：
Intercept the First ray parameter set in the code stream；
To the First ray parameter set decode addition in the presupposed information block in obtained sequential parameter information and cut letter
Breath；
The sequential parameter information after information is cut to addition encode obtaining the second sequence parameter set；
Second sequence parameter set is added in the code stream.
5. method according to claim 2, it is characterised in that described is that each two field picture in the video to be encoded adds
Plus inactive pixels, including：
Right side increase (W '-W) row inactive pixels of each two field picture in the video to be encoded；
Lower section increase (H '-H) row inactive pixels of each two field picture in the video to be encoded.
6. according to the method described in claim 1, it is characterised in that described is that each two field picture in the video to be encoded adds
Plus inactive pixels, including：
The inactive pixels of random color are added for each two field picture in the video to be encoded.
7. method according to claim 2, it is characterised in that the pixel quantity and length of the width of display resolution
The ratio of the pixel quantity in direction is m: n, and the display resolution is the resolution ratio for the image that terminal supports display, and m and n are
Integer more than 0,
The W is m integral multiple, and the H is n integral multiple, and described W: H=m: n.
8. a kind of video coding apparatus, it is characterised in that for coding side, described device includes：
Determining module, the target resolution for determining the video to be encoded according to the initial resolution of video to be encoded, institute
The resolution ratio for the codified that target resolution is supported by the coding side is stated, the target resolution is more than the initial resolution
Rate；
First add module, for adding inactive pixels for each two field picture in the video to be encoded, makes the invalid picture of addition
The resolution ratio of image after element is equal to the target resolution；
Second add module, for after the image progress Video coding after to the addition inactive pixels obtains code stream, in institute
State addition in code stream and cut information, it is described to cut the position that information is used to indicate inactive pixels in each two field picture.
9. a kind of video coding apparatus, it is characterised in that including：
Processor；
For the memory for the executable instruction for storing the processor；
Wherein, the processor is configured as：
The target resolution of the video to be encoded is determined according to the initial resolution of video to be encoded, the target resolution is
The resolution ratio for the codified that coding side is supported, the target resolution is more than the initial resolution；
Inactive pixels are added for each two field picture in the video to be encoded, make the resolution ratio of the image after addition inactive pixels
Equal to the target resolution；
After the image progress Video coding after to the addition inactive pixels obtains code stream, addition cuts letter in the code stream
Breath, it is described to cut the position that information is used to indicate inactive pixels in each two field picture.
10. a kind of storage medium, it is characterised in that when the instruction in the storage medium is by computing device, the processing
Device is able to carry out any described method for video coding of claim 1 to 7.
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