CN104079974A - Audio and video processing method and system - Google Patents
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Abstract
The invention discloses an audio and video processing method and system. The method includes the steps that audio parameters corresponding to audio data and video parameters corresponding to video data are acquired; the filling number of pixel points are determined according to the audio parameters and the video parameters, wherein the filling number of the pixel points is the number of pixel points which need to fill the audio data in each frame of the video data; the audio data fill all the frames of the video data according to the filling number of the pixel points. After the scheme is adopted, it can be guaranteed that audio and videos are synchronous, and meanwhile material cost and human cost can be reduced.
Description
Technical field
The present invention relates to multimedia technology field, particularly relate to a kind of audio/video processing method and system.
Background technology
In multimedia is processed, to Voice & Video, be generally separately to process at present; To video superpose, the processing such as convergent-divergent and noise reduction; Audio frequency is done to the processing such as filtering, delay; The data volume of processing compared with audio frequency due to Video processing is large, and after treatment, video generally can be slower than audio frequency output to two kinds of data, and the concrete time difference need to be weighed according to the complexity of Video processing.
In order to make audio frequency, audio video synchronization output, general processing mode is to adopt audio frequency special equipment, and equipment cost is higher, and need to be according to the output time of time difference manual adjustments audio frequency, complicated operation, and human cost is higher.
Summary of the invention
The object of the present invention is to provide a kind of audio/video processing method and system, can guarantee the synchronism of audio frequency, video, can reduce material resources cost, human cost again simultaneously.
Object of the present invention is achieved through the following technical solutions:
An audio/video processing method, comprises the steps:
Obtain audio frequency parameter and video parameter corresponding to video data that voice data is corresponding;
According to described audio frequency parameter and described video parameter, determine the pixel loading that needs to fill voice data in every one-frame video data;
According to described pixel loading, described voice data is filled in each video data frame of described video data.
An audio frequency and video treatment system, comprising:
Acquisition module, for obtaining audio frequency parameter and video parameter corresponding to video data that voice data is corresponding;
Processing module, for determining that according to described audio frequency parameter and described video parameter every one-frame video data needs to fill the pixel loading of voice data;
Packing module, for being filled into described voice data according to described pixel loading each video data frame of described video data.
According to the scheme of the invention described above, it is after obtaining the video parameter that audio frequency parameter that voice data is corresponding and video data are corresponding, according to this audio frequency parameter and video parameter, determine pixel loading, and voice data is filled in each video data frame of video data based on this pixel loading, because being is filled into voice data in each video data frame based on pixel loading, the data volume of the voice data of filling in each frame video data frame is identical, having realized voice data is equably filled in each video data frame, therefore, in audio video transmission process, voice data and video data are synchronous transmission, voice data and video data have guaranteed good synchronism, simultaneously, due to the present invention program, algorithm that need not be complicated can be realized, also material resources cost and human cost have been reduced.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of audio/video processing method embodiment of the present invention;
Fig. 2 is step S103 in Fig. 1 refinement schematic flow sheet in an embodiment therein;
Fig. 3 is the filling mode schematic diagram of the odd-numbered frame in one of them embodiment;
Fig. 4 is the filling mode schematic diagram of the even frame in one of them embodiment;
Fig. 5 is the structural representation of an embodiment of audio frequency and video treatment system of the present invention;
Fig. 6 is packing module in Fig. 1 refined structure schematic diagram in an embodiment therein;
Fig. 7 is the structural representation of another embodiment of audio frequency and video treatment system of the present invention;
Fig. 8 is the structural representation of the 3rd embodiment of audio frequency and video treatment system of the present invention.
Embodiment
For making object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is described in further detail.Should be appreciated that embodiment described herein, only in order to explain the present invention, does not limit protection scope of the present invention.
In following explanation, first the embodiment for audio/video processing method of the present invention describes, then each embodiment of audio frequency and video treatment system of the present invention is described.
Shown in Figure 1, be the schematic flow sheet of audio/video processing method embodiment of the present invention.As shown in Figure 1, the audio/video processing method in the present embodiment comprises the steps:
Step S101: obtain audio frequency parameter and video parameter corresponding to video data that voice data is corresponding;
Audio frequency parameter in the present embodiment can comprise sample rate, port number, the sampling bit wide of audio frequency, video parameter can comprise resolution, frame per second, the video color depth of video, also can only include as required the wherein parameter of a part, for example, audio frequency parameter can comprise sample rate, the port number of audio frequency, and video parameter can comprise the frame per second of video;
Simultaneously, audio frequency parameter in the present embodiment also can be for being used for the parameter of the data volume of definite voice data, video parameter can be for being used for the parameter of the frame number of definite video data, wherein, the data volume of determined voice data can refer to the data volume of unit interval, also can be the data volume of the voice data of random time section, or the total amount of data of voice data, determined frame number can refer to the frame number of unit interval, also can be the frame number of the video data of random time section, or the totalframes of video data;
But the sample rate, port number, the sampling bit wide that with audio frequency parameter, comprise audio frequency, video parameter comprises that resolution, frame per second, the video color depth of video are good, this mainly considers, voice data, video data are when transmission, all comprise these corresponding parameters, can or control data flow and obtain each audio frequency parameter from audio sample chip, can from video processor, obtain each video parameter, obtaining of parameter is real-time and convenient, can improve the treatment effeciency of audio frequency and video;
Step S102: determine pixel loading according to described audio frequency parameter and described video parameter, wherein, described pixel loading is for needing to fill the pixel quantity of voice data in each video data frame;
Can determine the pixel loading that needs to fill voice data in each frame video according to P=(k * n)/f, wherein, P refers to need to fill in every one-frame video data the pixel loading of voice data, k refers to the sample rate of audio frequency, n refers to the port number of audio frequency, f refers to the frame per second of video, but determining, the present invention in each frame video, need the pixel loading of filling voice data to be also not limited to this mode, for example, can also be multiplied by by the ratio of the total amount of data of voice data and the totalframes of video data video color depth determines with the mode of the ratio of sampling bit wide;
Step S103: described voice data is filled in each video data frame of described video data according to described pixel loading;
Described voice data is filled into the pixel in each video data frame of video data according to unit data quantity size, unit data quantity size is the amount of audio data that a pixel can be filled, and refers generally to the sampling bit wide of audio frequency;
In current video data frame, have and filled after voice data with the identical pixel of described pixel loading, and then in next video data frame, fill remaining voice data, also need to have the pixel identical with described pixel loading to fill voice data.By that analogy, in every like this one-frame video data, have with the identical pixel of described pixel loading and filled voice data, fill in order, be about to voice data uniform filling in each video data frame of described video data;
The sampling bit wide of general audio frequency is the video color depth that is less than video, therefore, voice data also can be similar to the pixel in video counts, for example, sampling bit wide is 16 (bits), video color depth is 24 bits, the voice data of 16 bits can be put in the video data (i.e. the data that pixel is corresponding) of 24 bits, 8 remaining bit video datas directly abandon when voice data is filled in video data, due to a pixel, filled again the voice data of 16 bits simultaneously, therefore, the video data of having filled the pixel of voice data is all to lose, fill the above-mentioned mode of determining the pixel loading that needs to fill voice data in each frame video and be also the situation that is less than video color depth and remaining bits data discard processing based on sampling bit wide.
In the present embodiment, why scheme carries out lossless process to audio frequency, voice data is embedded in video data frame equably, video data is damaged to processing, mainly consider: in amount of audio data statistical formula, data volume per second (bit)=sample frequency * sampling resolution * channel number, take the sample rate of 44.1KHZ, digital audio stereo, 16 is example, and data volume=44.1k * 16 * 2=1411.2kb per second, is approximately 1.4Mbps.And the data volume of video is very huge with respect to voice data, take resolution as 1920 * 1080, frame per second is 60HZ, the video data of color depth 24 bits is example, data volume=1920 * 1080 * 24 * 60=2.78Gbps per second.The contrast of voice data per second and video data, 1.4Mbps/2.78Gbps=0.0005036, known, 5/10000ths left and right of voice data per second the chances are video data.From these data analyses, can know, generally the voice data of each second is to coming compared with video data, substantially negligible.And from our human body angle, in video data, have the distortion of some pixels substantially on not impact of vision, and still, the sense of hearing of human body is but very sensitive, and the range of moment changes ear and can feel to obtain.
Accordingly, scheme according to above-mentioned the present embodiment, it is that it is after obtaining the video parameter that audio frequency parameter that voice data is corresponding and video data are corresponding, according to this audio frequency parameter and video parameter, determine pixel loading, and voice data is filled in each video data frame of video data based on this pixel loading, because being is filled into voice data in each video data frame based on pixel loading, the data volume of the voice data of filling in each frame video data frame is identical, having realized voice data is equably filled in each video data frame, therefore, in audio video transmission process, voice data and video data are synchronous transmission, voice data and video data have guaranteed good synchronism, simultaneously, due to the present invention program, algorithm that need not be complicated can be realized, also material resources cost and human cost have been reduced, in addition, because being carries out free of losses processing to audio frequency, and video data is damaged to processing, that is to say, adopt the present invention program, can in the situation that not increasing bandwidth, realize the mixed transport of audio frequency and video, can solve the limited problem of transmission medium bandwidth.
In addition, owing to having filled the video data of the pixel of voice data, can lose, if in video data frame the inside, toward a specific position, fill voice data always, can cause the video data of this line to be lost completely, and cannot reduce, for example, all be embedded into the first row, can cause like this video data of this line unreducible, for this reason, therein in an embodiment, in the time of in each video data frame that voice data is filled into video data, position difference corresponding to pixel that adjacent two video data frames are filled voice data, for example, can be by voice data according to primary importance, the second place, primary importance, the second place ... be filled into equably in each video data frame of video data, , the voice data that need to be filled in the first video data frame is filled into primary importance, the voice data that need to be filled in the second video data frame is filled into the second place, the voice data that need to be filled in the 3rd video data frame is filled into primary importance, by that analogy, any row in all can video data frame of primary importance and the second place or arbitrarily row or any comprise the piece of the capable y row of x, wherein, x and y are integer, but primary importance and the second place are two different positions, certainly, also be not limited to according to primary importance, the second place, primary importance, the second place ... the order mode of filling, as being primary importance, the second place, the 3rd position, primary importance ... order, or can also be primary importance, primary importance, the second place, the second place, primary importance ... order, will not be exhaustive at this,
Adopt the filling mode in the present embodiment, immediately, when rear end shows, video data is not done to any processing, visually, also can see complete video image.
But consider, because the reading order of video data is to read according to going into snakelike order, if padding data also in this order, can avoid looking for filling position, for this reason, therein in an embodiment, as shown in Figure 2, in described each video data frame that according to described pixel loading, described voice data is filled into described video data, can comprise step:
Step S1031: described video data is divided into odd-numbered frame and even frame in order;
Can described video data be divided into odd-numbered frame and even frame by the mode of sign is set, also can be divided into odd-numbered frame and even frame according to the just described video data of the reading order of video data frame;
Step S1032: in the time of in each video data frame that described audio frequency parameter is filled into video data, if the video data frame of current filling voice data is odd-numbered frame, from the first row, start to fill, if the video data frame of current filling voice data is even frame, from last column, start to fill;
Wherein, for odd-numbered frame, from the first row, start to fill, the first row can be filled the voice data of b * N bit, wherein, b is the sampling bit wide of audio frequency, as shown in Figure 3, N is the number of the pixel of a line, this row is filled from left to right, if filled the first row, also have voice data not fill, be that N is less than described pixel loading, recharge the second row, the second row is filled from right to left, by snakelike order, fill, as previously mentioned, because voice data is very little with respect to the data volume of video data, therefore, the voice data that the general video data that only needs one or two row just can fill a frame need to be filled,
For even frame, as Fig. 4, be also to fill by snakelike order, do not repeat them here.
Adopt scheme in the present embodiment, when just starting to read one-frame video data, voice data is filled into, when running through one-frame video data, voice data is filled into, fill more convenient and be easy to realize, simultaneously, when rear end shows, can video data not done to any processing yet.
In order to guarantee that each pixel has enough capacity to place voice data, therein in an embodiment, described audio frequency parameter can comprise sampling bit wide, described video parameter can comprise video color depth, audio/video processing method of the present invention, can also comprise step: judge that whether described video color depth is less than described sampling bit wide, if so, generates information.
In addition, display end receives aforesaid video data of filling voice data, it is the blended data of the two, generally comprise two processing procedures, the one, voice data is extracted from blended data, the 2nd, (as needs) reduce the video data of filling the pixel of voice data; Wherein, only need to from the pixel of access voice data, extract voice data, and the data that extract are stored in DDR (Double Data Rate Double Data Rate synchronous DRAM), and stamp a timestamp at the voice data of each second, completed the extraction of video data.When voice data extracts, also can complete the reduction of video data, due in order to prevent that video counts from thoroughly losing, position corresponding to pixel that general adjacent two video data frames are filled voice data is different, therefore, current video data frame has been filled voice data in the pixel of a certain position, this will be not fill voice data in the pixel of the same position of the former frame of current video data frame and a rear frame, therefore, the video data of the former frame of current video data frame and a rear frame can be averaged and determine in current video data frame for filling the video data of the pixel of voice data, adopt scheme in the present embodiment, realized the reduction to the video data of the pixel of filling voice data.
For example, if voice data is to start to fill, start the mode of filling from last column when the video data frame of current filling voice data is even frame from the first row while being odd-numbered frame according to the aforesaid video data frame at current filling voice data, first blended data gone here and there and change, solve video parameter and voice data parameter, these parameters are carried out after simple operation to the pixel number that the voice data that can obtain inserting strange, even video data frame the inside takies.The position of inserting voice data due to each odd-numbered frame video data is the same, next frame is that even frame is but real video data in same position, and, the video data of a line or 2 row is nullified, influential effect for video-see is also little, so the mode that before and after can adopting, frame video data is filled is carried out video data reduction.Detailed process is: corresponding first odd-numbered frame, its video data of filling the pixel of voice data is directly the video data of first even frame same position, since second odd-numbered frame data, before and after adopting, the data of two frame even frame are added the video data that the mode of averaging is determined the pixel of filling voice data; For last even frame, its video data of filling the pixel of voice data is directly the video data of last odd-numbered frame same position, from first even frame, before and after adopting, the data of two frame odd-numbered frame are added the video data of the pixel of determining filling voice data of averaging.
The audio/video processing method of the embodiment of the present invention, before audio video transmission, voice data is filled into video data and obtains blended data, and being transferred to the mode that the transmitting procedure of display end adopts, this blended data do not limit, can be the serial transmission of high speed parallel series and staticizer, can be also by network compression method, to transmit etc.
According to the audio frequency and video of the invention described above, process maintaining method, the present invention also provides a kind of audio frequency and video to process maintenance system, below with regard to audio frequency and video of the present invention, process maintenance system embodiment be elaborated.Audio frequency and video of the present invention have been shown in Fig. 5 and have processed the structural representation of the embodiment of maintenance system.For convenience of explanation, in Fig. 5, only show part related to the present invention.
As shown in Figure 5, the audio frequency and video treatment system in the present embodiment, comprising:
Acquisition module 201, for obtaining audio frequency parameter and video parameter corresponding to video data that voice data is corresponding;
Processing module 202, for determining pixel loading according to described audio frequency parameter and described video parameter, wherein, described pixel loading is for needing to fill the pixel quantity of voice data in each video data frame;
Packing module 203, for being filled into described voice data according to described pixel loading each video data frame of described video data.
Therein in an embodiment, packing module 203 is in each video data frame that voice data is filled into video data time, and position corresponding to pixel that adjacent two video data frames are filled voice datas can be different.
In an embodiment, as shown in Figure 6, packing module 203 can comprise therein:
Division unit 2031, for being divided in order odd-numbered frame and even frame by described video data;
Filler cells 2032, for when voice data being filled into each video data frame of video data, if the video data frame of current filling voice data is odd-numbered frame, from the first row, start to fill, if the video data frame of current filling voice data is even frame, from last column, start to fill out.
Therein in an embodiment, described audio frequency parameter can comprise sampling bit wide, described video parameter can comprise video color depth, as shown in Figure 7, the audio frequency and video treatment system of the present embodiment can also comprise reminding module 204, this reminding module 204 is for judging that whether described video color depth is less than described sampling bit wide, if so, generates information.
Therein in an embodiment, the audio frequency and video treatment system of the present embodiment can also comprise recovery module 205, and this recovery module 205 determines that for the video data of the former frame of current video data frame and a rear frame is averaged current video data frame is for filling the video data of the pixel of voice data.
It is corresponding one by one with audio frequency and video processing maintaining method of the present invention that audio frequency and video of the present invention are processed maintenance system, technical characterictic and the beneficial effect thereof of in above-mentioned audio frequency and video, processing the embodiment elaboration of maintaining method are all applicable in the embodiment of audio frequency and video processing maintenance system, statement hereby.
The above embodiment has only expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.
Claims (10)
1. an audio/video processing method, is characterized in that, comprises the steps:
Obtain audio frequency parameter and video parameter corresponding to video data that voice data is corresponding;
According to described audio frequency parameter and described video parameter, determine pixel loading, wherein, described pixel loading is for needing to fill the pixel quantity of voice data in each video data frame;
According to described pixel loading, described voice data is filled in each video data frame of described video data.
2. audio/video processing method according to claim 1, is characterized in that, position difference corresponding to pixel that adjacent two video data frames are filled voice data.
3. audio/video processing method according to claim 1, is characterized in that, described each video data frame that described voice data is filled into described video data according to described pixel loading comprises step:
Described video data is divided into odd-numbered frame and even frame in order;
In the time of in each video data frame that described voice data is filled into described video data, if the video data frame of current filling voice data is odd-numbered frame, from the first row, start to fill, if the video data frame of current filling voice data is even frame, from last column, start to fill.
4. audio/video processing method according to claim 1, is characterized in that:
Described audio frequency parameter comprises sampling bit wide, and described video parameter comprises video color depth;
Also comprise step: judge that whether described video color depth is less than described sampling bit wide, if so, generates information.
5. according to the audio/video processing method one of claim 2 to 4 Suo Shu, it is characterized in that, also comprise step:
The video data of the former frame of current video data frame and a rear frame is averaged and determined in current video data frame for filling the video data of the pixel of voice data.
6. an audio frequency and video treatment system, is characterized in that, comprises the steps:
Acquisition module, for obtaining audio frequency parameter and video parameter corresponding to video data that voice data is corresponding;
Processing module, for determining pixel loading according to described audio frequency parameter and described video parameter, wherein, described pixel loading is for needing to fill the pixel quantity of voice data in each video data frame;
Packing module, for being filled into described voice data according to described pixel loading each video data frame of described video data.
7. audio frequency and video treatment system according to claim 6, is characterized in that, described packing module is in each video data frame that voice data is filled into video data time, and the position that pixel that adjacent two video data frames are filled voice datas is corresponding is different.
8. audio frequency and video treatment system according to claim 6, is characterized in that, described packing module comprises:
Division unit, for being divided in order odd-numbered frame and even frame by described video data;
Filler cells, for when voice data being filled into each video data frame of video data, if the video data frame of current filling voice data is odd-numbered frame, from the first row, start to fill, if the video data frame of current filling voice data is even frame, from last column, start to fill out.
9. audio frequency and video treatment system according to claim 6, is characterized in that:
Described audio frequency parameter comprises sampling bit wide, and described video parameter comprises video color depth;
Also comprise reminding module, described reminding module is used for judging whether described video color depth is less than described sampling bit wide, if so, generates information.
10. according to the audio frequency and video treatment system one of claim 7 to 9 Suo Shu, it is characterized in that, also comprise:
Recovery module, determines that for the video data of the former frame of current video data frame and a rear frame is averaged current video data frame is for filling the video data of the pixel of voice data.
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