CN105681823A - Method and device for transcoding video file online - Google Patents
Method and device for transcoding video file online Download PDFInfo
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Abstract
The invention discloses a method and device for transcoding a video file online and belongs to the technical field of the Internet. The method comprises following steps of determining the target transcoding data volume of each video frame according to the parameter values of video parameters and the source data volume of each video frame preset in a to-be-transcoded video file, and the target transcoding parameter values preset corresponding to the video parameters; generating the file header of the transcoding video file according to the target parameter values of the video parameters and the target data volume corresponding to each video frame; sending the file header to a terminal; transcoding each video frame into a video frame with data volume not more than the corresponding target data volume according to the target data volume corresponding to each video frame and a play time sequence; generating the corresponding data contents in the transcoding video file; and when a preset sending condition is satisfied, sending the generated data contents to the terminal. In adoption of the method and the device provided by the invention, the video file can be transcoded online.
Description
Technical field
The present invention relates to Internet technical field, particularly to a kind of method and apparatus that video file is carried out online transcoding.
Background technology
Along with the development of Internet technology, the application of the Internet is more and more extensive, and from strength to strength, service provider can, by video file, be published to online for user's viewing function. Before issuing video, it usually needs video file is carried out transcoding, and service provider generally can select the mode of online transcoding that video file is carried out transcoding.
In the process that video file is carried out online transcoding, some frame of video in video file can be carried out transcoding by server every time, the frame of video that transcoding is completed, it is sent to terminal in real time, video data after transcoding then can be decoded by terminal, then playing video file, as such, it is possible to play out video in the process of server transcoding.
In the process realizing the present invention, inventor have found that prior art at least there is problems in that
In the video that service provider issues, a lot of video files are non-streaming video file, non-streaming video file is made up of file header and video data two parts, file header comprises the frame list of video file, frame list comprises the information such as reproduction time corresponding to each frame of video, original position (byte number that namely frame of video offsets in video file) and data volume. In transcoding process, server needs after whole video file transcoding, can determine the information such as the data volume of each frame of video, original position after transcoding, and then can generate the frame list after transcoding. But, terminal needs according to the frame list in file header, the information such as the original position determining each frame, video file could be played out, that is terminal needs first to get frame list, just can commence play out video, therefore, based on existing processing mode, non-streaming video file cannot be carried out online transcoding.
Summary of the invention
In order to solve problem of the prior art, embodiments provide a kind of method and apparatus that video file is carried out online transcoding. Described technical scheme is as follows:
First aspect, provide a kind of method that video file is carried out online transcoding, described method includes:, according to the former data volume treating the parameter value of video parameter and each frame of video preset in transcoded video file, and the targeted parameter value carrying out transcoding that corresponding described video parameter pre-sets, it is determined that described each frame of video carries out the target data amount of transcoding;
The target data amount that targeted parameter value according to described video parameter is corresponding with described each frame of video, generates the file header of transcoded video file, sends described file header to terminal;
According to the target data amount that described each frame of video is corresponding, according to playing sequential, it is the frame of video that data volume is not more than the target data amount of correspondence by described each frame of video transcoding, generates data content corresponding in described transcoded video file;
Whenever meeting the transmission condition preset, send the data content generated to described terminal.
In conjunction with first aspect, in the first possible implementation of this first aspect, the described target data amount corresponding according to described each frame of video, according to playing sequential, it is the frame of video that data volume is not more than the target data amount of correspondence by described each frame of video transcoding, generate data content corresponding in described transcoded video file, including:
According to playing sequential, the described each frame of video treating transcoded video file is carried out transcoding, the data volume of the frame of video after transcoding is contrasted with corresponding target data amount, if the data volume of the frame of video after transcoding is not more than the target data amount of correspondence, then generate data content corresponding in described transcoded video file according to the frame of video after transcoding; If the data volume of the frame of video after transcoding is more than corresponding target data amount, then adjust described targeted parameter value and corresponding frame of video is re-started transcoding, until the data volume of the frame of video after transcoding is less than corresponding target data amount, generate data content corresponding in described transcoded video file according to the frame of video after transcoding.
In conjunction with first aspect, the second in this first aspect is likely in implementation, and described video parameter includes resolution, codec compression ratio, encoding and decoding rank, frame per second and code check;
Described basis treats the parameter value of video parameter default in transcoded video file and the former data volume of each frame of video, and the targeted parameter value carrying out transcoding that corresponding described video parameter pre-sets, determine that described each frame of video carries out the target data amount of transcoding, including:
The first ratio of numerical value and the target value of the resolution carrying out transcoding pre-set of the resolution of transcoded video file is treated described in determining;
The numerical value of the codec compression ratio of transcoded video file and the first product of the numerical value of encoding and decoding rank is treated described in determining, determine the second product of the target value of the codec compression ratio carrying out transcoding pre-set and the target value of encoding and decoding rank, it is determined that the second ratio of described first product and described second product;
The 3rd ratio of numerical value and the target value of the frame per second carrying out transcoding pre-set of the frame per second of transcoded video file is treated described in determining;
The 4th ratio of numerical value and the target value of the code check carrying out transcoding pre-set of the code check of transcoded video file is treated described in determining;
Former data volume according to each frame of video, and described first ratio, described second ratio, described 3rd ratio and described 4th ratio, it is determined that described each frame of video carries out the target data amount of transcoding.
The second in conjunction with first aspect is likely to implementation, in the third possible implementation of this first aspect, the described former data volume according to each frame of video, and described first ratio, described second ratio, described 3rd ratio and described 4th ratio, determine that described each frame of video carries out the target data amount of transcoding, including:
Described first ratio is mapped multiplied by weight with the resolution preset, obtains resolution and map ratio;
Described second ratio is mapped multiplied by weight with the encoding and decoding preset, obtains encoding and decoding and map ratio;
Described 3rd ratio is mapped multiplied by weight with the frame per second preset, obtains frame per second and map ratio;
Described 4th ratio is mapped multiplied by weight with the code check preset, obtains code check and map ratio;
Described resolution maps ratio, described encoding and decoding map ratio, described frame per second maps ratio and is multiplied with described code check mapping ratio, obtain frame of video and map ratio;
The former data volume of described each frame of video is mapped ratio divided by described frame of video, obtains described each frame of video and carry out the target data amount of transcoding.
In conjunction with first aspect, in the 4th kind of possible implementation of this first aspect, described whenever meeting the transmission condition preset, the data content generated is sent to described terminal, including:
When the quantity of the frame of video of transcoding reaches the frame of video threshold value preset, send the data content generated to described terminal.
Second aspect, it is provided that a kind of device that video file is carried out online transcoding, described device includes:
Determine module, for the former data volume according to the parameter value and each frame of video for the treatment of video parameter default in transcoded video file, and the targeted parameter value carrying out transcoding that corresponding described video parameter pre-sets, it is determined that described each frame of video carries out the target data amount of transcoding;
Generation module, for the target data amount corresponding with described each frame of video according to the targeted parameter value of described video parameter, generates the file header of transcoded video file, sends described file header to terminal;
Transcoding module, for the target data amount corresponding according to described each frame of video, according to playing sequential, is the frame of video that data volume is not more than the target data amount of correspondence by described each frame of video transcoding, generates data content corresponding in described transcoded video file;
Sending module, for, whenever meeting the transmission condition preset, sending the data content generated to described terminal.
In conjunction with second aspect, in the first possible implementation of this second aspect, described transcoding module, it is used for:
According to playing sequential, the described each frame of video treating transcoded video file is carried out transcoding, the data volume of the frame of video after transcoding is contrasted with corresponding target data amount, if the data volume of the frame of video after transcoding is not more than the target data amount of correspondence, then generate data content corresponding in described transcoded video file according to the frame of video after transcoding; If the data volume of the frame of video after transcoding is more than corresponding target data amount, then adjust described targeted parameter value and corresponding frame of video is re-started transcoding, until the data volume of the frame of video after transcoding is less than corresponding target data amount, generate data content corresponding in described transcoded video file according to the frame of video after transcoding.
In conjunction with second aspect, the second in this second aspect is likely in implementation, and described video parameter includes resolution, codec compression ratio, encoding and decoding rank, frame per second and code check;
Described determine module, be used for:
The first ratio of numerical value and the target value of the resolution carrying out transcoding pre-set of the resolution of transcoded video file is treated described in determining;
The numerical value of the codec compression ratio of transcoded video file and the first product of the numerical value of encoding and decoding rank is treated described in determining, determine the second product of the target value of the codec compression ratio carrying out transcoding pre-set and the target value of encoding and decoding rank, it is determined that the second ratio of described first product and described second product;
The 3rd ratio of numerical value and the target value of the frame per second carrying out transcoding pre-set of the frame per second of transcoded video file is treated described in determining;
The 4th ratio of numerical value and the target value of the code check carrying out transcoding pre-set of the code check of transcoded video file is treated described in determining;
Former data volume according to each frame of video, and described first ratio, described second ratio, described 3rd ratio and described 4th ratio, it is determined that described each frame of video carries out the target data amount of transcoding.
The second in conjunction with second aspect is likely to implementation, is likely in implementation at the third of this second aspect, described determines module, is used for:
Described first ratio is mapped multiplied by weight with the resolution preset, obtains resolution and map ratio;
Described second ratio is mapped multiplied by weight with the encoding and decoding preset, obtains encoding and decoding and map ratio;
Described 3rd ratio is mapped multiplied by weight with the frame per second preset, obtains frame per second and map ratio;
Described 4th ratio is mapped multiplied by weight with the code check preset, obtains code check and map ratio;
Described resolution maps ratio, described encoding and decoding map ratio, described frame per second maps ratio and is multiplied with described code check mapping ratio, obtain frame of video and map ratio;
The former data volume of described each frame of video is mapped ratio divided by described frame of video, obtains described each frame of video and carry out the target data amount of transcoding.
In conjunction with second aspect, in the 4th kind of possible implementation of this second aspect, described sending module, it is used for:
When the quantity of the frame of video of transcoding reaches the frame of video threshold value preset, send the data content generated to described terminal.
The technical scheme that the embodiment of the present invention provides has the benefit that
In the embodiment of the present invention, former data volume according to the parameter value and each frame of video for the treatment of video parameter default in transcoded video file, and the targeted parameter value carrying out transcoding that correspondence video parameter pre-sets, determine that each frame of video carries out the target data amount of transcoding, the target data amount that targeted parameter value according to video parameter is corresponding with each frame of video, generate the file header of transcoded video file, file header is sent to terminal, according to the target data amount that each frame of video is corresponding, according to playing sequential, it is the frame of video that data volume is not more than the target data amount of correspondence by each frame of video transcoding, generate data content corresponding in transcoded video file, when meeting the transmission condition preset, the data content generated is sent to terminal, based on this transcoding mode, file header without generating after whole video file is carried out transcoding, and can be generated as at the initial stage that video file is carried out transcoding, thus, can realize non-streaming video file is carried out online transcoding.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme in the embodiment of the present invention, below the accompanying drawing used required during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is a kind of method flow diagram that video file carries out online transcoding that the embodiment of the present invention provides;
Fig. 2 is the schematic diagram of the frame list that the embodiment of the present invention provides;
Fig. 3 is a kind of apparatus structure schematic diagram that video file carries out online transcoding that the embodiment of the present invention provides;
Fig. 4 is the structural representation of a kind of server that the embodiment of the present invention provides.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.
Embodiment one
The handling process of the method embodiments provides a kind of method that video file is carried out online transcoding, as it is shown in figure 1, can comprise the following steps that
Step 101, the former data volume according to the parameter value and each frame of video for the treatment of video parameter default in transcoded video file, and the targeted parameter value carrying out transcoding that corresponding video parameter pre-sets, it is determined that each frame of video carries out the target data amount of transcoding.
Step 102, according to the target data amount that the targeted parameter value of video parameter is corresponding with each frame of video, generates the file header of transcoded video file, sends file header to terminal.
Step 103, according to the target data amount that each frame of video is corresponding, according to playing sequential, is the frame of video that data volume is not more than the target data amount of correspondence by each frame of video transcoding, generates data content corresponding in transcoded video file.
Step 104, whenever meeting the transmission condition preset, sends the data content generated to terminal.
In the embodiment of the present invention, former data volume according to the parameter value and each frame of video for the treatment of video parameter default in transcoded video file, and the targeted parameter value carrying out transcoding that correspondence video parameter pre-sets, determine that each frame of video carries out the target data amount of transcoding, the target data amount that targeted parameter value according to video parameter is corresponding with each frame of video, generate the file header of transcoded video file, file header is sent to terminal, according to the target data amount that each frame of video is corresponding, according to playing sequential, it is the frame of video that data volume is not more than the target data amount of correspondence by each frame of video transcoding, generate data content corresponding in transcoded video file, when meeting the transmission condition preset, the data content generated is sent to terminal, based on this transcoding mode, file header without generating after whole video file is carried out transcoding, and can be generated as at the initial stage that video file is carried out transcoding, thus, can realize non-streaming video file is carried out online transcoding.
Embodiment two
Embodiments providing a kind of method that video file is carried out online transcoding, the executive agent of the method is server. Wherein, server could be for video file is carried out the server of online transcoding.
Below in conjunction with detailed description of the invention, the handling process shown in Fig. 1 being described in detail, content can be such that
Step 101, the former data volume according to the parameter value and each frame of video for the treatment of video parameter default in transcoded video file, and the targeted parameter value carrying out transcoding that corresponding video parameter pre-sets, it is determined that each frame of video carries out the target data amount of transcoding.
Wherein, video parameter is server is the parameter that arranges of heterogeneity describing video, and it is one or more that video parameter can include in resolution, codec compression ratio, encoding and decoding rank, frame per second and code check.
In force, user can install the application program for playing video in terminal, when user wants to watch certain video, this application program can be opened in terminal, and click the icon that this video is corresponding, terminal then can send, to server, the request message playing this video, after server receives this request message, the video file of user's request can be inquired about in local video file, the video file can also issued on network is inquired about the video file of user's request, then the file header of this video file (namely treating transcoded video file) is obtained, and then the parameter value (numerical value such as resolution of the video parameter of this video file can be obtained, the numerical value of codec compression ratio, the numerical value of encoding and decoding rank, the numerical value of frame per second and the numerical value of code check), and from the frame list of file header, obtain the data volume (former data volume can be called) of each frame of video, each frame of video can be treat all videos frame of transcoded video file, it can also be the partial video frame (as rejected part reference frame) treating transcoded video file. server can also obtain the targeted parameter value carrying out transcoding that corresponding each video parameter pre-sets, the parameter value of the video parameter according to the video file got, the former data volume of each frame of video and targeted parameter value, calculate each frame of video and carry out the target data amount of transcoding, target data amount is calculated estimated value, when video file is carried out transcoding, can with the target data amount of each frame of video data-quantity threshold as each frame of video after transcoding, namely after transcoding, the data volume of each frame of video not can exceed that target data amount. additionally, can in the reference frame of frame of video, selected part reference frame is as the reference frame needing transcoding, when video file is carried out transcoding by server, only key frame and the part reference frame of frame of video can be carried out transcoding, so can reduce the data volume of server transcoding.
Optionally, can according to the ratio of video parameter numerical value in treating transcoded video file with the target value carrying out transcoding pre-set, calculate each frame of video and carry out the target data amount of transcoding, when video parameter includes resolution, codec compression ratio, encoding and decoding rank, frame per second and code check, accordingly, the processing procedure of step 101 can be such that the numerical value determining the resolution treating transcoded video file and the first ratio of the target value of the resolution carrying out transcoding pre-set; Determine the first product of the numerical value of the codec compression ratio treating transcoded video file and the numerical value of encoding and decoding rank, determine the second product of the target value of the codec compression ratio carrying out transcoding pre-set and the target value of encoding and decoding rank, it is determined that the second ratio of the first product and the second product; 3rd ratio of the numerical value determining the frame per second treating transcoded video file and the target value of the frame per second carrying out transcoding pre-set; 4th ratio of the numerical value determining the code check treating transcoded video file and the target value of the code check carrying out transcoding pre-set; Former data volume according to each frame of video, and the first ratio, the second ratio, the 3rd ratio and the 4th ratio, it is determined that each frame of video carries out the target data amount of transcoding.
In force, server is determined after the video file of transcoding, the ratio of the target value carrying out transcoding that each video parameter numerical value in treating transcoded video file pre-sets with this video parameter can be calculated respectively, and then according to the ratio calculated, each frame of video can be calculated and carry out the target data amount of transcoding. Specifically, server can obtain the resolution treating transcoded video file, such as 1024*768, the resolution carrying out transcoding pre-set can also be obtained, such as 800*600, then the ratio (i.e. the first ratio) of the two can be calculated, i.e. (1024*768)/(800*600)=1.6384; Server can obtain the codec compression ratio and encoding and decoding rank for the treatment of transcoded video file, as codec compression ratio be 1, encoding and decoding rank be 1.05, calculate the two product (i.e. the first product), for 1*1.05=1.05, the codec compression ratio carrying out transcoding and encoding and decoding rank that pre-set can also be obtained, as codec compression ratio be 0.5, encoding and decoding rank be 1,0.5*1=0.5, then the ratio (i.e. the second ratio) of two products, i.e. 1.05/0.5=2.1 can be calculated; Server can obtain the frame per second treating transcoded video file, such as 24, it is also possible to obtains the frame per second carrying out transcoding pre-set, such as 24, then can calculate the ratio (i.e. the 3rd ratio) of the two, i.e. 24/24=1; Server can obtain the code check treating transcoded video file, such as 200, it is also possible to obtains the code check carrying out transcoding pre-set, such as 100, then can calculate the ratio (i.e. the 4th ratio) of the two, i.e. 200/100=2; Server can also obtain the former data volume of certain frame of video treating transcoded video file, such as 1k, then server can by the former data volume of this frame of video divided by aforementioned four ratio, ratio is mapped again divided by the frame of video pre-set, such as 1.8, calculate this frame of video and carry out the target data amount of transcoding, for instance, target data amount can be 1k/ (1.6384*2.1*1*2*1.8)=80.7.
Optionally, each frame of video can be calculated according to the former data volume mapping ratio and each frame of video of each video parameter and carry out the target data amount of transcoding, corresponding processing procedure can be such that and with the resolution preset, the first ratio is mapped multiplied by weight, obtains resolution and maps ratio; Second ratio is mapped multiplied by weight with the encoding and decoding preset, obtains encoding and decoding and map ratio; 3rd ratio is mapped multiplied by weight with the frame per second preset, obtains frame per second and map ratio; 4th ratio is mapped multiplied by weight with the code check preset, obtains code check and map ratio; Resolution maps ratio, encoding and decoding map ratio, frame per second maps ratio and is multiplied with code check mapping ratio, obtain frame of video and map ratio; The former data volume of described each frame of video is mapped ratio divided by described frame of video, obtains described each frame of video and carry out the target data amount of transcoding.
In force, can prestoring multiple video parameter in server, and corresponding each video parameter stores the mapping weight of this video parameter, the numerical value mapping weight in the process that great lot video files carries out transcoding, can be obtained by statistics and analysis. Server can calculate the ratio of the target value carrying out transcoding that each video parameter numerical value in treating transcoded video file pre-sets with this video parameter according to the method described above respectively, then it is multiplied by, with the ratio calculated, the mapping weight that this video parameter is corresponding, and then calculate the mapping ratio of this video parameter, such that it is able to the mapping ratio according to each video parameter, determine that frame of video maps ratio, calculate each frame of video and carry out the target data amount of transcoding. Specifically, server can calculate above-mentioned first ratio, such as 1.6384, then can obtain resolution and map weight, and such as 0.8, calculating resolution maps ratio, i.e. 1.6384*0.8 ≈ 1.31; Server can calculate above-mentioned second ratio, such as 2.1, then can obtain encoding and decoding and map weight, such as 1.5, calculates encoding and decoding and maps ratio, i.e. 2.1*1.5=3.15; Server can calculate above-mentioned 3rd ratio, such as 1, then can obtain frame per second and map weight, such as 1.1, calculates frame per second and maps ratio, i.e. 1*1.1=1.1; Server can calculate above-mentioned 4th ratio, such as 2, then can obtain code check and map weight, such as 0.9, calculates code check and maps ratio, i.e. 2*0.9=1.8; Server can calculate frame of video and map ratio, i.e. 1.31*3.15*1.1*1.8=8.17, and then server can obtain the former data volume of certain frame of video, such as 1k, calculates the target data amount of this frame of video transcoding, i.e. 1k/8.17=122.
Step 102, according to the target data amount that the targeted parameter value of video parameter is corresponding with each frame of video, generates the file header of transcoded video file, sends file header to terminal.
In force, after server calculates the target data amount of each frame of video transcoding, the original position in each frame of video video file after transcoding can be calculated, original position is the byte number that frame of video offsets in video file, such as, it is 1000 that server calculates the target data amount of the first frame of video transcoding, the target data amount of the second frame of video transcoding is 200, the target data amount of the 3rd frame of video transcoding is 185, if the original position of the first frame of video is 5000, then the original position of the second frame of video is 5000+1000=6000, the original position of the 3rd frame of video is 6000+200=6200, the like. server can generate the frame list after transcoding according to the reproduction time of the original position in target data amount corresponding to each frame of video, each frame of video video file after transcoding and each frame of video, as shown in Figure 2, then the file header of transcoded video file can be generated according to the targeted parameter value of this frame list and video parameter, file header is sent to terminal, terminal then can receive this document head, in order to follow-up use. it addition, server can also store this document head in this locality.
Step 103, according to the target data amount that each frame of video is corresponding, according to playing sequential, is the frame of video that data volume is not more than the target data amount of correspondence by each frame of video transcoding, generates data content corresponding in transcoded video file.
In force, after server generates the file header of transcoded video file, can according to playing sequential, each frame of video is carried out transcoding, server can obtain the target data amount that the frame of video treating transcoding is corresponding, then it is the frame of video of target data amount that data volume is not more than correspondence by this frame of video transcoding, server is it may also be determined that the poor data volume of the data volume of frame of video after the transcoding target data amount corresponding with this frame of video, the invalid data of this data volume is inserted after frame of video after transcoding, generate data content corresponding in transcoded video file, it is sent to described terminal. such as, server is when carrying out transcoding to certain frame of video, the target data amount 200 that this frame of video is corresponding can be obtained, then be data volume by this frame of video transcoding it is the frame of video of 180, server may determine that the data volume that the data volume of transcoding rear video frame and target data amount differ from is 20, then the invalid data that data volume is 20 can be inserted after the frame of video after transcoding, such as 0.
Optionally, in order to prevent the data volume of the frame of video after transcoding more than corresponding target data amount, accordingly, the processing procedure of step 103 can be such that according to playing sequential, the frame of video treating transcoded video file carries out transcoding, the data volume of the frame of video after transcoding is contrasted with corresponding target data amount, if the data volume of the frame of video after transcoding is not more than the target data amount of correspondence, then generates data content corresponding in transcoded video file according to the frame of video after transcoding; If the data volume of the frame of video after transcoding is more than corresponding target data amount, then adjust targeted parameter value and corresponding frame of video is re-started transcoding, until the data volume of the frame of video after transcoding is less than corresponding target data amount, generate data content corresponding in transcoded video file according to the frame of video after transcoding.
In force, server is treated after the frame of video in transcoded video file carries out transcoding, target data amount corresponding with this frame of video for the data volume of the frame of video after transcoding can be contrasted, it is judged that whether the data volume of the frame of video after transcoding exceedes the target data amount that this frame of video is corresponding. if the data volume of the frame of video after transcoding is less than or equal to corresponding target data amount, then server can generate data content corresponding in transcoded video file according to said method, if the data volume of the frame of video after transcoding is more than corresponding target data amount, then server can calculate the data volume of the frame of video after the ratio of target data amount corresponding to this frame of video and transcoding, then can by video parameter, the targeted parameter value of one or more video parameters (such as code check or code level) is multiplied by this ratio, obtain should targeted parameter value after the adjustment of frame of video, and then this frame of video can be re-started transcoding, until the data volume of the frame of video after transcoding is less than corresponding target data amount, can then proceed in said method, generate data content corresponding in transcoded video file. such as, after the former data volume of certain frame of video is calculated by server, the target data amount obtaining this frame of video is 80, after this frame of video is carried out transcoding, the data volume of this frame of video is 100, then server can calculate the ratio of the data volume after the target data amount of this frame of video and transcoding, i.e. 80/100=0.8, then the targeted parameter value 100 of code check is obtained, calculate should targeted parameter value after the adjustment of frame of video, i.e. 100*0.8=80, then server can be the code check of 80 according to targeted parameter value, and this frame of video is carried out transcoding again.
Step 104, whenever meeting the transmission condition preset, sends the data content generated to terminal.
In force, server can pre-set transmission condition, such as, when the data volume obtained after server transcoding is more than preset data amount threshold value, server can send, to terminal, the data content generated, specifically, after server starts transcoding, the data volume of data content corresponding in the transcoded video file of generation can be calculated, when this data volume exceedes preset data amount threshold value, the data content generated can be sent to terminal by server, then server can restart to calculate, when the data volume of data content corresponding in the transcoded video file that server generates reaches preset data amount threshold value, the data content generated can be sent to terminal by server, server when often reaching to preset the transmission cycle, can also send the data content generated to terminal. after terminal receives the data content that server sends, it is possible to according to the frame list in file header, it is determined that information such as the original positions of each frame of video, thus video file is played out.
Optionally, the transmission condition preset can be frame of video threshold value, and accordingly, the processing procedure of step 104 can be such that when the quantity of the frame of video of transcoding reaches the frame of video threshold value preset, sends the data content generated to terminal.
In force, server can pre-set frame of video threshold value, then after frame of video is started transcoding by server, it is possible to add up the frame number of the frame of video of transcoding, when the frame number of the frame of video of server transcoding reaches frame of video threshold value, server can send, to terminal, the data content generated. Such as, it is 15 frames that server can pre-set frame of video threshold value, then, when the frame of video of server transcoding reaches 15, server can send, to terminal, the data content generated.
In the embodiment of the present invention, former data volume according to the parameter value and each frame of video for the treatment of video parameter default in transcoded video file, and the targeted parameter value carrying out transcoding that correspondence video parameter pre-sets, determine that each frame of video carries out the target data amount of transcoding, the target data amount that targeted parameter value according to video parameter is corresponding with each frame of video, generate the file header of transcoded video file, file header is sent to terminal, according to the target data amount that each frame of video is corresponding, according to playing sequential, it is the frame of video that data volume is not more than the target data amount of correspondence by each frame of video transcoding, generate data content corresponding in transcoded video file, when meeting the transmission condition preset, the data content generated is sent to terminal, based on this transcoding mode, file header without generating after whole video file is carried out transcoding, and can previously generate before video file is carried out transcoding, thus, can realize non-streaming video file is carried out online transcoding.
Embodiment three
Based on identical technology design, the embodiment of the present invention additionally provides a kind of device that video file carries out online transcoding, as in figure 2 it is shown, this device includes:
Determine module 310, for the former data volume according to the parameter value and each frame of video for the treatment of video parameter default in transcoded video file, and the targeted parameter value carrying out transcoding that corresponding described video parameter pre-sets, it is determined that described each frame of video carries out the target data amount of transcoding;
Generation module 320, for the target data amount corresponding with described each frame of video according to the targeted parameter value of described video parameter, generates the file header of transcoded video file, sends described file header to terminal;
Transcoding module 330, for the target data amount corresponding according to described each frame of video, according to playing sequential, is the frame of video that data volume is not more than the target data amount of correspondence by described each frame of video transcoding, generates data content corresponding in described transcoded video file;
Sending module 340, for, whenever meeting the transmission condition preset, sending the data content generated to described terminal.
Optionally, described transcoding module 330, it is used for:
According to playing sequential, the described each frame of video treating transcoded video file is carried out transcoding, the data volume of the frame of video after transcoding is contrasted with corresponding target data amount, if the data volume of the frame of video after transcoding is not more than the target data amount of correspondence, then generate data content corresponding in described transcoded video file according to the frame of video after transcoding; If the data volume of the frame of video after transcoding is more than corresponding target data amount, then adjust described targeted parameter value and corresponding frame of video is re-started transcoding, until the data volume of the frame of video after transcoding is less than corresponding target data amount, generate data content corresponding in described transcoded video file according to the frame of video after transcoding.
Optionally, described video parameter includes resolution, codec compression ratio, encoding and decoding rank, frame per second and code check;
Described determine module 310, be used for:
The first ratio of numerical value and the target value of the resolution carrying out transcoding pre-set of the resolution of transcoded video file is treated described in determining;
The numerical value of the codec compression ratio of transcoded video file and the first product of the numerical value of encoding and decoding rank is treated described in determining, determine the second product of the target value of the codec compression ratio carrying out transcoding pre-set and the target value of encoding and decoding rank, it is determined that the second ratio of described first product and described second product;
The 3rd ratio of numerical value and the target value of the frame per second carrying out transcoding pre-set of the frame per second of transcoded video file is treated described in determining;
The 4th ratio of numerical value and the target value of the code check carrying out transcoding pre-set of the code check of transcoded video file is treated described in determining;
Former data volume according to each frame of video, and described first ratio, described second ratio, described 3rd ratio and described 4th ratio, it is determined that described each frame of video carries out the target data amount of transcoding.
Optionally, described determine module 310, be used for:
Described first ratio is mapped multiplied by weight with the resolution preset, obtains resolution and map ratio;
Described second ratio is mapped multiplied by weight with the encoding and decoding preset, obtains encoding and decoding and map ratio;
Described 3rd ratio is mapped multiplied by weight with the frame per second preset, obtains frame per second and map ratio;
Described 4th ratio is mapped multiplied by weight with the code check preset, obtains code check and map ratio;
Described resolution maps ratio, described encoding and decoding map ratio, described frame per second maps ratio and is multiplied with described code check mapping ratio, obtain frame of video and map ratio;
The former data volume of described each frame of video is mapped ratio divided by described frame of video, obtains described each frame of video and carry out the target data amount of transcoding.
Optionally, described sending module 340, it is used for
When the quantity of the frame of video of transcoding reaches the frame of video threshold value preset, send the data content generated to described terminal.
In the embodiment of the present invention, former data volume according to the parameter value and each frame of video for the treatment of video parameter default in transcoded video file, and the targeted parameter value carrying out transcoding that correspondence video parameter pre-sets, determine that each frame of video carries out the target data amount of transcoding, the target data amount that targeted parameter value according to video parameter is corresponding with each frame of video, generate the file header of transcoded video file, file header is sent to terminal, according to the target data amount that each frame of video is corresponding, according to playing sequential, it is the frame of video that data volume is not more than the target data amount of correspondence by each frame of video transcoding, generate data content corresponding in transcoded video file, when meeting the transmission condition preset, the data content generated is sent to terminal, based on this transcoding mode, file header without generating after whole video file is carried out transcoding, and can previously generate before video file is carried out transcoding, thus, can realize non-streaming video file is carried out online transcoding.
It should be understood that the device that video file carries out online transcoding that above-described embodiment provides is when carrying out online transcoding to video file, only it is illustrated with the division of above-mentioned each functional module, in practical application, as desired above-mentioned functions distribution can be completed by different functional modules, it is divided into different functional modules, to complete all or part of function described above by the internal structure of equipment. It addition, above-described embodiment device that video file carries out online transcoding provided and the embodiment of the method that video file carries out online transcoding belong to same design, it implements process and refers to embodiment of the method, repeats no more here.
Embodiment four
Fig. 4 is the structural representation of the server that the embodiment of the present invention provides. This server 1900 can produce relatively larger difference because of configuration or performance difference, one or more central processing units (centralprocessingunits can be included, CPU) 1922 (such as, one or more processors) and memorizer 1932, the storage medium 1930 (such as one or more mass memory units) of one or more storage application programs 1942 or data 1944. Wherein, memorizer 1932 and storage medium 1930 can be of short duration storage or persistently store. The program being stored in storage medium 1930 can include one or more modules (diagram does not mark), and each module can include a series of command operatings in server. Further, central processing unit 1922 could be arranged to communicate with storage medium 1930, performs a series of command operatings in storage medium 1930 on server 1900.
Server 1900 can also include one or more power supplys 1926, one or more wired or wireless network interfaces 1950, one or more input/output interfaces 1958, one or more keyboards 1956, and/or, one or more operating systems 1941, such as WindowsServerTM, MacOSXTM, UnixTM, LinuxTM, FreeBSDTM etc.
Server 1900 can include memorizer, and one or more than one program, one of them or more than one program are stored in memorizer, and are configured to be performed one or more than one program package containing the instruction for carrying out following operation by one or more than one processor:
Former data volume according to the parameter value and each frame of video for the treatment of video parameter default in transcoded video file, and the targeted parameter value carrying out transcoding that corresponding described video parameter pre-sets, it is determined that described each frame of video carries out the target data amount of transcoding;
The target data amount that targeted parameter value according to described video parameter is corresponding with described each frame of video, generates the file header of transcoded video file, sends described file header to terminal;
According to the target data amount that described each frame of video is corresponding, according to playing sequential, it is the frame of video that data volume is not more than the target data amount of correspondence by described each frame of video transcoding, generates data content corresponding in described transcoded video file;
Whenever meeting the transmission condition preset, send the data content generated to described terminal.
Optionally, the described target data amount corresponding according to described each frame of video, according to playing sequential, it is the frame of video that data volume is not more than the target data amount of correspondence by described each frame of video transcoding, generates data content corresponding in described transcoded video file, including:
According to playing sequential, the described each frame of video treating transcoded video file is carried out transcoding, the data volume of the frame of video after transcoding is contrasted with corresponding target data amount, if the data volume of the frame of video after transcoding is not more than the target data amount of correspondence, then generate data content corresponding in described transcoded video file according to the frame of video after transcoding; If the data volume of the frame of video after transcoding is more than corresponding target data amount, then adjust described targeted parameter value and corresponding frame of video is re-started transcoding, until the data volume of the frame of video after transcoding is less than corresponding target data amount, generate data content corresponding in described transcoded video file according to the frame of video after transcoding.
Optionally, described video parameter includes resolution, codec compression ratio, encoding and decoding rank, frame per second and code check;
Described basis treats the parameter value of video parameter default in transcoded video file and the former data volume of each frame of video, and the targeted parameter value carrying out transcoding that corresponding described video parameter pre-sets, determine that described each frame of video carries out the target data amount of transcoding, including:
The first ratio of numerical value and the target value of the resolution carrying out transcoding pre-set of the resolution of transcoded video file is treated described in determining;
The numerical value of the codec compression ratio of transcoded video file and the first product of the numerical value of encoding and decoding rank is treated described in determining, determine the second product of the target value of the codec compression ratio carrying out transcoding pre-set and the target value of encoding and decoding rank, it is determined that the second ratio of described first product and described second product;
The 3rd ratio of numerical value and the target value of the frame per second carrying out transcoding pre-set of the frame per second of transcoded video file is treated described in determining;
The 4th ratio of numerical value and the target value of the code check carrying out transcoding pre-set of the code check of transcoded video file is treated described in determining;
Former data volume according to each frame of video, and described first ratio, described second ratio, described 3rd ratio and described 4th ratio, it is determined that described each frame of video carries out the target data amount of transcoding.
Optionally, the described former data volume according to each frame of video, and described first ratio, described second ratio, described 3rd ratio and described 4th ratio, it is determined that described each frame of video carries out the target data amount of transcoding, including:
Described first ratio is mapped multiplied by weight with the resolution preset, obtains resolution and map ratio;
Described second ratio is mapped multiplied by weight with the encoding and decoding preset, obtains encoding and decoding and map ratio;
Described 3rd ratio is mapped multiplied by weight with the frame per second preset, obtains frame per second and map ratio;
Described 4th ratio is mapped multiplied by weight with the code check preset, obtains code check and map ratio;
Described resolution maps ratio, described encoding and decoding map ratio, described frame per second maps ratio and is multiplied with described code check mapping ratio, obtain frame of video and map ratio;
The former data volume of described each frame of video is mapped ratio divided by described frame of video, obtains described each frame of video and carry out the target data amount of transcoding.
Optionally, described whenever meeting the transmission condition preset, the data content generated is sent to described terminal, including:
When the quantity of the frame of video of transcoding reaches the frame of video threshold value preset, send the data content generated to described terminal.
In the embodiment of the present invention, former data volume according to the parameter value and each frame of video for the treatment of video parameter default in transcoded video file, and the targeted parameter value carrying out transcoding that correspondence video parameter pre-sets, determine that each frame of video carries out the target data amount of transcoding, the target data amount that targeted parameter value according to video parameter is corresponding with each frame of video, generate the file header of transcoded video file, file header is sent to terminal, according to the target data amount that each frame of video is corresponding, according to playing sequential, it is the frame of video that data volume is not more than the target data amount of correspondence by each frame of video transcoding, generate data content corresponding in transcoded video file, when meeting the transmission condition preset, the data content generated is sent to terminal, based on this transcoding mode, file header without generating after whole video file is carried out transcoding, and can previously generate before video file is carried out transcoding, thus, can realize non-streaming video file is carried out online transcoding.
One of ordinary skill in the art will appreciate that all or part of step realizing above-described embodiment can be completed by hardware, can also be completed by the hardware that program carrys out instruction relevant, described program can be stored in a kind of computer-readable recording medium, storage medium mentioned above can be read only memory, disk or CD etc.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all within the spirit and principles in the present invention, any amendment of making, equivalent replacement, improvement etc., should be included within protection scope of the present invention.
Claims (10)
1. the method that video file is carried out online transcoding, it is characterised in that described method includes:
Former data volume according to the parameter value and each frame of video for the treatment of video parameter default in transcoded video file, and the targeted parameter value carrying out transcoding that corresponding described video parameter pre-sets, it is determined that described each frame of video carries out the target data amount of transcoding;
The target data amount that targeted parameter value according to described video parameter is corresponding with described each frame of video, generates the file header of transcoded video file, sends described file header to terminal;
According to the target data amount that described each frame of video is corresponding, according to playing sequential, it is the frame of video that data volume is not more than the target data amount of correspondence by described each frame of video transcoding, generates data content corresponding in described transcoded video file;
Whenever meeting the transmission condition preset, send the data content generated to described terminal.
2. method according to claim 1, it is characterized in that, the described target data amount corresponding according to described each frame of video, according to playing sequential, it is the frame of video that data volume is not more than the target data amount of correspondence by described each frame of video transcoding, generate data content corresponding in described transcoded video file, including:
According to playing sequential, the described each frame of video treating transcoded video file is carried out transcoding, the data volume of the frame of video after transcoding is contrasted with corresponding target data amount, if the data volume of the frame of video after transcoding is not more than the target data amount of correspondence, then generate data content corresponding in described transcoded video file according to the frame of video after transcoding; If the data volume of the frame of video after transcoding is more than corresponding target data amount, then adjust described targeted parameter value and corresponding frame of video is re-started transcoding, until the data volume of the frame of video after transcoding is less than corresponding target data amount, generate data content corresponding in described transcoded video file according to the frame of video after transcoding.
3. method according to claim 1, it is characterised in that described video parameter includes resolution, codec compression ratio, encoding and decoding rank, frame per second and code check;
Described basis treats the parameter value of video parameter default in transcoded video file and the former data volume of each frame of video, and the targeted parameter value carrying out transcoding that corresponding described video parameter pre-sets, determine that described each frame of video carries out the target data amount of transcoding, including:
The first ratio of numerical value and the target value of the resolution carrying out transcoding pre-set of the resolution of transcoded video file is treated described in determining;
The numerical value of the codec compression ratio of transcoded video file and the first product of the numerical value of encoding and decoding rank is treated described in determining, determine the second product of the target value of the codec compression ratio carrying out transcoding pre-set and the target value of encoding and decoding rank, it is determined that the second ratio of described first product and described second product;
The 3rd ratio of numerical value and the target value of the frame per second carrying out transcoding pre-set of the frame per second of transcoded video file is treated described in determining;
The 4th ratio of numerical value and the target value of the code check carrying out transcoding pre-set of the code check of transcoded video file is treated described in determining;
Former data volume according to each frame of video, and described first ratio, described second ratio, described 3rd ratio and described 4th ratio, it is determined that described each frame of video carries out the target data amount of transcoding.
4. method according to claim 3, it is characterized in that, the described former data volume according to each frame of video, and described first ratio, described second ratio, described 3rd ratio and described 4th ratio, determine that described each frame of video carries out the target data amount of transcoding, including:
Described first ratio is mapped multiplied by weight with the resolution preset, obtains resolution and map ratio;
Described second ratio is mapped multiplied by weight with the encoding and decoding preset, obtains encoding and decoding and map ratio;
Described 3rd ratio is mapped multiplied by weight with the frame per second preset, obtains frame per second and map ratio;
Described 4th ratio is mapped multiplied by weight with the code check preset, obtains code check and map ratio;
Described resolution maps ratio, described encoding and decoding map ratio, described frame per second maps ratio and is multiplied with described code check mapping ratio, obtain frame of video and map ratio;
The former data volume of described each frame of video is mapped ratio divided by described frame of video, obtains described each frame of video and carry out the target data amount of transcoding.
5. method according to claim 1, it is characterised in that described whenever meeting the transmission condition preset, sends the data content generated to described terminal, including:
When the quantity of the frame of video of transcoding reaches the frame of video threshold value preset, send the data content generated to described terminal.
6. the device that video file is carried out online transcoding, it is characterised in that described device includes:
Determine module, for the former data volume according to the parameter value and each frame of video for the treatment of video parameter default in transcoded video file, and the targeted parameter value carrying out transcoding that corresponding described video parameter pre-sets, it is determined that described each frame of video carries out the target data amount of transcoding;
Generation module, for the target data amount corresponding with described each frame of video according to the targeted parameter value of described video parameter, generates the file header of transcoded video file, sends described file header to terminal;
Transcoding module, for the target data amount corresponding according to described each frame of video, according to playing sequential, is the frame of video that data volume is not more than the target data amount of correspondence by described each frame of video transcoding, generates data content corresponding in described transcoded video file;
Sending module, for, whenever meeting the transmission condition preset, sending the data content generated to described terminal.
7. device according to claim 6, it is characterised in that described transcoding module, is used for:
According to playing sequential, the described each frame of video treating transcoded video file is carried out transcoding, the data volume of the frame of video after transcoding is contrasted with corresponding target data amount, if the data volume of the frame of video after transcoding is not more than the target data amount of correspondence, then generate data content corresponding in described transcoded video file according to the frame of video after transcoding; If the data volume of the frame of video after transcoding is more than corresponding target data amount, then adjust described targeted parameter value and corresponding frame of video is re-started transcoding, until the data volume of the frame of video after transcoding is less than corresponding target data amount, generate data content corresponding in described transcoded video file according to the frame of video after transcoding.
8. device according to claim 6, it is characterised in that described video parameter includes resolution, codec compression ratio, encoding and decoding rank, frame per second and code check;
Described determine module, be used for:
The first ratio of numerical value and the target value of the resolution carrying out transcoding pre-set of the resolution of transcoded video file is treated described in determining;
The numerical value of the codec compression ratio of transcoded video file and the first product of the numerical value of encoding and decoding rank is treated described in determining, determine the second product of the target value of the codec compression ratio carrying out transcoding pre-set and the target value of encoding and decoding rank, it is determined that the second ratio of described first product and described second product;
The 3rd ratio of numerical value and the target value of the frame per second carrying out transcoding pre-set of the frame per second of transcoded video file is treated described in determining;
The 4th ratio of numerical value and the target value of the code check carrying out transcoding pre-set of the code check of transcoded video file is treated described in determining;
Former data volume according to each frame of video, and described first ratio, described second ratio, described 3rd ratio and described 4th ratio, it is determined that described each frame of video carries out the target data amount of transcoding.
9. device according to claim 8, it is characterised in that described determine module, is used for:
Described first ratio is mapped multiplied by weight with the resolution preset, obtains resolution and map ratio;
Described second ratio is mapped multiplied by weight with the encoding and decoding preset, obtains encoding and decoding and map ratio;
Described 3rd ratio is mapped multiplied by weight with the frame per second preset, obtains frame per second and map ratio;
Described 4th ratio is mapped multiplied by weight with the code check preset, obtains code check and map ratio;
Described resolution maps ratio, described encoding and decoding map ratio, described frame per second maps ratio and is multiplied with described code check mapping ratio, obtain frame of video and map ratio;
The former data volume of described each frame of video is mapped ratio divided by described frame of video, obtains described each frame of video and carry out the target data amount of transcoding.
10. device according to claim 6, it is characterised in that described sending module, is used for
When the quantity of the frame of video of transcoding reaches the frame of video threshold value preset, send the data content generated to described terminal.
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