CN107666611B - A kind of bit rate control method and mobile terminal - Google Patents
A kind of bit rate control method and mobile terminal Download PDFInfo
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- CN107666611B CN107666611B CN201710821576.8A CN201710821576A CN107666611B CN 107666611 B CN107666611 B CN 107666611B CN 201710821576 A CN201710821576 A CN 201710821576A CN 107666611 B CN107666611 B CN 107666611B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
- H04N19/146—Data rate or code amount at the encoder output
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
- H04N19/103—Selection of coding mode or of prediction mode
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
- H04N19/156—Availability of hardware or computational resources, e.g. encoding based on power-saving criteria
Abstract
The embodiment of the present invention provides a kind of bit rate control method and mobile terminal, the method can include: if receiving the operational order of shooting video, then the video of shooting is encoded respectively using at least two different code rates, to obtain the different video data of at least two-way；If receiving the operational order for stopping shooting video, it is determined that the target duration of the target video shot；According to the corresponding relationship of the duration and code rate that pre-establish, the determining and matched target bit rate of target duration；Export target video data, wherein the target video data is the video data encoded using the target bit rate to the target video in at least different video data of two-way.Mobile terminal provided in an embodiment of the present invention can be according to shooting duration of video flexible choice encoder bit rate, so as to achieve the purpose that effectively to take into account video pictures quality and video file size.
Description
Technical field
The present invention relates to field of communication technology more particularly to a kind of bit rate control methods and mobile terminal.
Background technique
With the fast development of Internet technology and multimedia technology and becoming increasingly popular for mobile terminal, people can be through
Video, especially small video often are shot using mobile terminal, and the video of shooting is shared by internet with other people.Currently,
Mobile terminal is usually used fixed code rate and encodes to the video of shooting, wherein code rate refers to video file in unit
The data traffic used in time, under same resolution ratio, the code stream of video file is bigger, and compression ratio is with regard to smaller, and image quality is just
It is better, in this way, according to cbr (constant bit rate) it is lower, then easily lead to shooting after video pictures quality defect, if improve video
Image quality and the higher cbr (constant bit rate) used then easily lead to the longer video of shooting time and occupy biggish memory space.
As it can be seen that existing mobile terminal is big with video file in the presence of cannot effectively take into account video pictures quality when shooting video
Small problem.
Summary of the invention
The embodiment of the present invention provides a kind of bit rate control method and mobile terminal, is regarded with solving existing mobile terminal in shooting
There are problems that effectively taking into account video pictures quality and video file size when frequency.
In a first aspect, the embodiment of the present invention provides a kind of bit rate control method, it is applied to mobile terminal, the method packet
It includes:
If receive shooting video operational order, using at least two different code rates respectively to the video of shooting into
Row coding, to obtain the different video data of at least two-way；
If receiving the operational order for stopping shooting video, it is determined that the target duration of the target video shot；
According to the corresponding relationship of the duration and code rate that pre-establish, the determining and matched target bit rate of target duration；
Export target video data, wherein the target video data is in at least different video data of two-way
The video data that the target video is encoded using the target bit rate.
Second aspect, the embodiment of the present invention also provide a kind of mobile terminal, comprising:
Coding module, if the operational order for receiving shooting video, using at least two different code rate difference
The video of shooting is encoded, to obtain the different video data of at least two-way；
First determining module, if for receiving the operational order for stopping shooting video, it is determined that the target shot
The target duration of video；
Second determining module, for the corresponding relationship according to the duration and code rate pre-established, when determination is with the target
Long matched target bit rate；
Output module, for exporting target video data, wherein the target video data is that at least two-way is different
Video data in the video data that the target video is encoded using the target bit rate.
The third aspect, the embodiment of the present invention also provide another mobile terminal, comprising: memory, processor and are stored in
On memory and the computer program that can run on a processor, the processor realize this hair when executing the computer program
The step in bit rate control method in bright embodiment.
Fourth aspect, the embodiment of the present invention also provide a kind of computer readable storage medium, are stored thereon with computer journey
Sequence realizes the step in the bit rate control method in the embodiment of the present invention when program is executed by processor.
In the embodiment of the present invention, when shooting video, the mobile terminal can be using at least two different code rates point
The other video to shooting encodes, described so as to obtain the different video data of at least two-way, and at the end of shooting
Mobile terminal can determine the target bit rate for the target video that shooting obtains according to the duration of shooting, and export using the mesh
The target video data that coding rate encodes the target video.In this way, since the first movement terminal is to adopt
It is encoded with video of the variable code rate to different shooting duration of video, so as to encode code according to shooting duration of video flexible choice
Rate, and then can achieve the purpose for effectively taking into account video pictures quality Yu video file size.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be in embodiment or description of the prior art
Required attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the invention
Example is applied, it for those of ordinary skill in the art, without any creative labor, can also be attached according to these
Figure obtains other attached drawings.
Fig. 1 is a kind of flow diagram of bit rate control method provided in an embodiment of the present invention；
Fig. 2 is the schematic diagram of the corresponding relationship of a kind of duration provided in an embodiment of the present invention and code rate；
Fig. 3 is the flow diagram of another bit rate control method provided in an embodiment of the present invention；
Fig. 4 is a kind of structural schematic diagram of mobile terminal provided in an embodiment of the present invention；
Fig. 5 is the structural schematic diagram of another mobile terminal provided in an embodiment of the present invention；
Fig. 6 is the structural schematic diagram of another mobile terminal provided in an embodiment of the present invention；
Fig. 7 is the structural schematic diagram of another mobile terminal provided in an embodiment of the present invention；
Fig. 8 is the structural schematic diagram of another mobile terminal provided in an embodiment of the present invention；
Fig. 9 is the structural schematic diagram of another first movement terminal provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are some of the embodiments of the present invention, instead of all the embodiments.Based on this hair
Embodiment in bright, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.
Referring to Fig. 1, Fig. 1 is a kind of flow diagram of bit rate control method provided in an embodiment of the present invention, it is applied to
Mobile terminal, as shown in Figure 1, the described method comprises the following steps:
If step 101, the operational order for receiving shooting video, using at least two different code rates respectively to shooting
Video encoded, to obtain the different video data of at least two-way.
The above-mentioned operational order for receiving shooting video can be and receive user's touch-control camera shooting in shooting preview interface
The operational order of key, such as: it receives user and is taken the photograph in the video capture preview interface of camera application program or in other supports
The operational order of the Application Program Interface triggering camera shooting of picture.
If the above-mentioned operational order for receiving the shooting video, using at least two different code rates respectively to shooting
Video encoded, can be when user using the mobile terminal start shooting when, then enable at least two-path video coding
Channel, and every road Video coding channel is respectively adopted different code rates and encodes to the video shot, wherein code rate is
Refer to the data traffic that uses within the unit time of video file, be most important part in image quality control in Video coding,
Under same resolution ratio, the code stream of video file is bigger, and for compression ratio with regard to smaller, image quality is better.In this way, being compiled from every road video
Video data after the available coding all the way in code channel, therefore, by using at least two different code rates respectively to bat
The video taken the photograph is encoded, the different video data of available at least two-way.
In the present embodiment, in the instruction operation for receiving shooting video, by using at least two different code rates point
The other video to shooting encodes, so as to obtain the video data of the different image quality of at least two-way, and then can be with
According to the duration of shooting, to export the target video data for taking into account image quality and file size.
If step 102 receives the operational order for stopping shooting video, it is determined that the target of the target video shot
Duration.
Above-mentioned target video is that the mobile terminal starts to take reception after the operational order for receiving shooting video
The video shot during stopping shooting after to the operational order for stopping shooting video, above-mentioned target duration are understood that
For the playing duration of the target video, it is understood that when shooting when shooting the target video for the mobile terminal
It is long.
In the step, if above-mentioned receive the operational order for stopping shooting video, it is determined that the target video shot
Target duration, can be by recording the mobile terminal from starting to take the shooting duration of video stopped between shooting, come
To the target duration of the target video, it is also possible to obtain the mesh from the file information of the target video after shooting
Mark duration.
In the present embodiment, when receiving the operational order for stopping shooting, the target for the target video that shooting obtains is determined
Duration, so as to according to the target duration, to determine matched target bit rate.
The corresponding relationship of duration and code rate that step 103, basis pre-establish, the determining and matched mesh of target duration
Coding rate.
The corresponding relationship of above-mentioned duration and code rate, which can be, to be pre-established, and specifically, the duration is corresponding with code rate
Relationship can be different duration range and respectively correspond a code rate, is also possible to different durations and respectively corresponds a code
Rate, such as: the corresponding relationship of the duration and code rate can be as shown in Fig. 2, 0~T1Between the corresponding code rate of duration be B1, T1
~T2Between the corresponding code rate of duration be B2, T2~T3Between the corresponding code rate of duration be B3Deng, wherein T3>T2>T1> 0, B1
>B2>B3, the minimum unit of duration is the second.
In the step, the corresponding relationship of duration and code rate that above-mentioned basis pre-establishes, the determining and target duration
The target bit rate matched can be and look into from the corresponding relationship of the duration and code rate according to the corresponding relationship of the duration and code rate
Find with the matched target bit rate of target duration, such as: the corresponding relationship of duration and code rate according to Fig.2, if institute
Target duration is stated between 0~T1Between, then it can determine that with the matched target bit rate of target duration be B1。
In the present embodiment, according to the corresponding relationship of the duration and code rate that pre-establish, determination is matched with the target duration
Target bit rate, may thereby determine that target bit rate used by the video data of final output, in this way, the mobile terminal is just
It realizes and target bit rate is determined according to shooting duration of video, and then export the target video data for taking into account image quality and file size
Purpose.
Step 104, output target video data, wherein the target video data is at least different view of two-way
The video data that frequency encodes the target video using the target bit rate in.
Above-mentioned target video data is the video counts that obtained at least two-way is different after being encoded using different code rates
It is that video counts all the way encoded using identified target bit rate in step 103 to the target video in
According to.
In the step, above-mentioned output target video data, it can be understood as after the shooting is finished, final output is described
Target video, i.e., the video data checked for user that the described mobile terminal saves are the target video data.
In the present embodiment, by exporting target video data, it is ensured that user is shot obtained video data to use
The video data encoded with the matched target bit rate of shooting duration of video, to reach the picture matter for effectively taking into account video
The purpose of amount and file size.
In the present embodiment, above-mentioned mobile terminal can be mobile phone, tablet computer (Tablet Personal Computer),
Laptop computer (Laptop Computer), personal digital assistant (personal digital assistant, abbreviation PDA),
Mobile Internet access device (Mobile Internet Device, abbreviation MID) or wearable device (Wearable Device) etc.
Terminal device.
In the embodiment of the present invention, when shooting video, the mobile terminal can be using at least two different code rates point
The other video to shooting encodes, described so as to obtain the different video data of at least two-way, and at the end of shooting
Mobile terminal can determine the target bit rate for the target video that shooting obtains according to the duration of shooting, and export using the mesh
The target video data that coding rate encodes the target video.In this way, since the first movement terminal is to adopt
It is encoded with video of the variable code rate to different shooting duration of video, so as to encode code according to shooting duration of video flexible choice
Rate, and then can achieve the purpose for effectively taking into account video pictures quality Yu video file size.
Referring to Fig. 3, Fig. 3 is the flow diagram of another bit rate control method provided in an embodiment of the present invention, application
In mobile terminal.On the basis of embodiment embodiment shown in Fig. 1, adds and how to have established duration pass corresponding with code rate
The step of being.As shown in figure 3, the described method comprises the following steps:
Step 301, the maximum allowable duration for obtaining the video shot.
When above-mentioned maximum allowable duration can be the mobile terminal and shoot video in special photographed scene, the view of shooting
Frequently permitted maximum shooting duration of video, wherein the special photographed scene can be when some supports are shot and limit shooting
The photographed scene of video record is carried out under long Application Program Interface, such as: when shooting small video, the maximum shooting duration of video of limitation
It is 10 seconds.
In the step, the maximum allowable duration of the video by obtaining shooting can be previously according to the maximum allowable duration
It divides duration threshold value, and then can determine code rate corresponding to different duration ranges according to the duration threshold value of division.
Step 302, according to the maximum allowable duration, determine at least two different duration threshold values, wherein it is described at least
Each duration threshold value is respectively less than or is equal to the maximum allowable duration in two different duration threshold values.
In the step, according to the maximum allowable duration, the maximum allowable duration can be divided, to determine extremely
Few two different duration threshold values.Specifically, long segment when the maximum allowable duration can be divided at least two, and will
The end duration of long segment is as duration threshold value when each, to obtain at least two different duration threshold values, and it is described at least
Each duration threshold value is respectively less than or is equal to the maximum allowable duration in two different duration threshold values, such as: it is described maximum fair
A length of 10 seconds when perhaps, long segment when the maximum allowable duration is divided into three, respectively 0~5 second, 5 seconds~8 seconds and 8 seconds
It~10 seconds, to obtain three duration threshold values, is followed successively by 5 seconds, 8 seconds and 10 seconds, or can be impartial when will be described maximum allowable
Long segment when being divided into four, respectively 0~2.5 second, 2.5 seconds~5 seconds, 5 seconds~7.5 seconds and 7.5 seconds~10 seconds, to obtain
Four duration threshold values are followed successively by 2.5 seconds, 5 seconds, 7.5 seconds and 10 seconds.
In the present embodiment, according to the maximum allowable duration, at least two different duration threshold values are determined, so that the shifting
Dynamic terminal can be according to described at least two different duration threshold values, come when determining at least two different code rates, and then establishing
The long corresponding relationship with code rate.
Step 303 determines code rate corresponding to each duration threshold value in described at least two different duration threshold values respectively,
To obtain at least two different code rates, wherein the first duration threshold value institute in described at least two different duration threshold values is right
The code rate answered be greater than described at least two different duration threshold values in the second duration threshold value described in corresponding code rate, described first
Duration threshold value is less than the second duration threshold value.
It is above-mentioned to determine code rate corresponding to each duration threshold value in described at least two different duration threshold values respectively, it can be with
It is to be set separately in described at least two different duration threshold values corresponding described in each duration threshold value according to the size of duration threshold value
Code rate, and code rate corresponding to the first duration threshold value after setting in described at least two different duration threshold values is made to be greater than institute
State corresponding code rate described in the second duration threshold value at least two different duration threshold values, wherein the first duration threshold value
Less than the second duration threshold value.Such as: it is respectively 5 according to each duration threshold value in described at least two different duration threshold values
Second, 8 seconds and 10 seconds, code rate corresponding to these three duration threshold values can be set and be followed successively by 1.5 Gigabits per seconds (Million bits
Per second, abbreviation Mbps), 1.2Mbps and 1M bps.
In this way, in the step, by determining each duration threshold value institute in described at least two different duration threshold values respectively
Corresponding code rate to obtain at least two different code rates, and guarantees that code rate corresponding to the smaller duration threshold value of duration is bigger,
Video to both shooting duration of video made shorter has preferable image quality, and the longer video of shooting duration of video can also do not accounted for
With biggish memory space.
Optionally, step 303 includes:
According to the relationship of code rate and shooting duration of video, each duration in described at least two different duration threshold values is calculated separately
Code rate corresponding to threshold value, to obtain at least two different code rates, wherein when code rate is equal to video file size divided by shooting
Long, video file size is preset value.
In the embodiment, video file size can be equal to according to code rate divided by this relationship of shooting duration of video, is counted respectively
Calculate code rate corresponding to each duration threshold value in described at least two different duration threshold values, wherein video file size can be with
For preset value, it can be understood as the maximum permissible value of the file size of the video of shooting, such as: it is no more than with video file size
For 1.5M, if three duration threshold values are respectively 5 seconds, 8 seconds and 10 seconds, according to the relationship of code rate and shooting duration of video, Ke Yiji
It calculates these three corresponding code rates of duration threshold value and is followed successively by 2.4Mbps, 1.5Mbps and 1.2Mbps.
In this way, in the embodiment, by the relationship using code rate and shooting duration of video, to determine that described at least two is different
Duration threshold value in code rate corresponding to each duration threshold value, thereby may be ensured that before video file size is unlikely to excessive
Put the image quality for taking into account the video of shooting as much as possible.
Step 304, the code rate according to corresponding to each duration threshold value in described at least two different duration threshold values are established
The corresponding relationship of duration and code rate.
It, can be according to each in be calculated in step 303 described at least two different duration threshold values in the step
Code rate corresponding to duration threshold value establishes the corresponding relationship of duration and code rate, specifically, can be different with described at least two
Duration threshold value in each duration threshold value be boundary, make the corresponding code rate of a certain section of duration range, such as: if being calculated described
Code rate corresponding to the first duration threshold value at least two different duration threshold values is the first code rate, and the second duration threshold value institute is right
The code rate answered is the second code rate, and code rate corresponding to third duration threshold value is third code rate, then according to the corresponding relationship, when establishing
The long corresponding relationship with code rate can be that the corresponding code rate of duration within the first duration threshold value is the first code rate, more than first
Duration threshold value but the corresponding code rate of duration within the second duration threshold value are the second code rate, more than the second duration threshold value but the
The corresponding code rate of duration within three duration threshold values is third code rate.
In the present embodiment, according to code rate corresponding to each duration threshold value in described at least two different duration threshold values,
The corresponding relationship of duration and code rate is established, so that the mobile terminal is when shooting, it can be according to pair of the duration and code rate
It should be related to, to determine target bit rate corresponding with shooting duration of video, and export the image quality and file size for effectively taking into account video
Video data.
If step 305, the operational order for receiving shooting video, using at least two different code rates respectively to shooting
Video encoded, to obtain the different video data of at least two-way.
The specific embodiment of the step may refer to the embodiment of step 101 in embodiment of the method shown in FIG. 1, be
It avoids repeating, which is not described herein again.
It should be noted that the video type shot when receiving the operational order of shooting video need to be with step in the step
Targeted video type matches when obtaining the maximum allowable duration of the video of shooting in rapid 301, such as: shooting duration of video is consistent
Small video or step 305 in the duration of video that shoots in step 301 within the maximum allowable duration.
If step 306 receives the operational order for stopping shooting video, it is determined that the target of the target video shot
Duration.
The specific embodiment of the step may refer to the embodiment of step 102 in embodiment of the method shown in FIG. 1, be
It avoids repeating, which is not described herein again.
Optionally, after step 305, before step 306, the method also includes:
If the duration of shooting is more than target duration threshold value, stop using in described at least two different code rates with it is described
The corresponding code rate of target duration threshold value encodes the video of shooting, wherein the target duration threshold value is described at least two
Any one duration threshold value in a different duration threshold value.
In the embodiment, during shooting after the operational order for receiving shooting video, however, it is determined that shooting
Duration when being more than any one duration threshold value in described at least two different duration threshold values, then stop using it is described at least
Code rate corresponding with the duration threshold value encodes the video of shooting in two different code rates.Specifically, in shooting process
In, if the duration of shooting is more than the first duration threshold value in described at least two different duration threshold values, stop using institute
It states the first code rate corresponding with the first duration threshold value at least two different code rates to encode the video of shooting, if shooting
Duration when being more than the second duration threshold value in described at least two different duration threshold values, then stop using described at least two
The second code rate corresponding with the second duration threshold value encode to the video of shooting, etc. in different code rates.
In this way, the mobile terminal will stop using described at least two different code rates with the increase of shooting duration of video
The middle code rate bigger than code rate corresponding with current shooting duration of video encodes the video of shooting, but only with it is described at least
The code rate smaller than code rate corresponding with current shooting duration of video encodes the video of shooting in two different code rates.Due to
In the embodiment of the present invention, the target video data of final output is using target bit rate corresponding with the duration of shooting to shooting
What video was encoded, therefore, in shooting process, when the duration of shooting is more than some duration threshold value, it can stop
Only the video of shooting is encoded using code rate corresponding with the duration threshold value, so as to avoid unnecessary back-end data
Processing, discharges certain running memory.
Optionally, after step 305, before step 306, the method also includes:
Preview video data are shown in shooting preview interface, wherein the preview video data are at least two-way
The video data that the video of shooting is encoded using code rate corresponding with the duration of shooting in different video datas.
Uncompressed view is shown during shooting video in existing mobile terminal in shooting preview interface
Frequency evidence, therefore, no matter the length of shooting time, user can preview to video image be all same frame quality, and
In the embodiment, in shooting process, at least different video data of two-way is shown in shooting preview interface
The middle video data encoded using code rate corresponding with the duration of shooting to the video of shooting, that is, use instant playback
The mode of target video data corresponding with current shooting duration.
In this way, user can be with the image quality of the video of preview to shooting, to facilitate user's control bat in shooting
Duration is taken the photograph, to avoid occurring obtaining the undesirable video of image quality because shooting duration of video is too long.
Certainly, it in the embodiment, is equally applicable in embodiment shown in FIG. 1, and can reach identical beneficial to effect
Fruit.
The corresponding relationship of duration and code rate that step 307, basis pre-establish, the determining and matched mesh of target duration
Coding rate.
The specific embodiment of the step may refer to the embodiment of step 103 in embodiment of the method shown in FIG. 1, be
It avoids repeating, which is not described herein again.
Step 308, output target video data, wherein the target video data is at least different view of two-way
The video data that frequency encodes the target video using the target bit rate in.
The specific embodiment of the step may refer to the embodiment of step 104 in embodiment of the method shown in FIG. 1, be
It avoids repeating, which is not described herein again.
Optionally, after step 308, the method also includes:
Remove the video data in at least different video data of two-way in addition to the target video data.
Due to when starting shooting, being to be encoded using at least two different code rates to the video of shooting, thus meeting
The different video data of at least two-way is obtained, and after the shooting is finished, it need to only export and the matched target video number of shooting duration of video
According to therefore, in the embodiment, in the video data different for at least two-way in addition to the target video data
Video data, in this way, the video data being without the use of in memory can be cleared up, is released by the way of removing processing to reach
Put the purpose of memory.
Certainly, it in the embodiment, is equally applicable in embodiment shown in FIG. 1, and can reach identical beneficial to effect
Fruit.
In the present embodiment, on the basis of embodiment shown in Fig. 1, pair for how establishing the duration and code rate added
The step of should being related to, to keep the implementation for establishing the corresponding relationship of the duration and code rate more clear specific.In addition, this
The embodiment of plurality of optional is also added on the basis of embodiment embodiment shown in Fig. 1, these optional embodiments
Can be combined with each other realization, can also be implemented separately, and be attained by and effectively take into account video pictures quality and video file size
Technical effect.
Referring to Fig. 4, Fig. 4 is the structural schematic diagram that the present invention implements a kind of mobile terminal provided, as shown in figure 4, moving
Moving terminal 400 includes:
Coding module 401, if the operational order for receiving shooting video, using at least two different code rates point
The other video to shooting encodes, to obtain the different video data of at least two-way；
First determining module 402, if for receiving the operational order for stopping shooting video, it is determined that the mesh shot
Mark the target duration of video；
Second determining module 403, for the corresponding relationship according to the duration and code rate pre-established, the determining and target
The matched target bit rate of duration；
Output module 404, for exporting target video data, wherein the target video data is at least two-way
The video data that the target video is encoded using the target bit rate in different video datas.
Optionally, as shown in figure 5, the mobile terminal 400 further include:
Module 405 is obtained, the maximum allowable duration of the video for obtaining shooting；
Third determining module 406, for determining at least two different duration threshold values according to the maximum allowable duration,
Wherein, each duration threshold value is respectively less than or is equal to the maximum allowable duration in described at least two different duration threshold values；
4th determining module 407, for determining each duration threshold value in described at least two different duration threshold values respectively
Corresponding code rate, to obtain at least two different code rates, wherein first in described at least two different duration threshold values
Code rate corresponding to duration threshold value is greater than corresponding described in the second duration threshold value in described at least two different duration threshold values
Code rate, the first duration threshold value are less than the second duration threshold value；
Module 408 is established, for according to corresponding to each duration threshold value in described at least two different duration threshold values
Code rate establishes the corresponding relationship of the duration and code rate.
Optionally, as shown in fig. 6, the mobile terminal 400 further include:
Stopping modular 409 stops using described at least two not if the duration for shooting is more than target duration threshold value
Code rate corresponding with the target duration threshold value encodes the video of shooting in same code rate, wherein the target duration
Threshold value is any one duration threshold value in described at least two different duration threshold values.
Optionally, the 4th determining module 407 is used for according to the relationship of code rate and shooting duration of video, calculate separately it is described extremely
Code rate corresponding to each duration threshold value in few two different duration threshold values, to obtain at least two different code rates, wherein
Code rate is equal to video file size divided by shooting duration of video, and video file size is preset value.
Optionally, as shown in fig. 7, the mobile terminal 400 further include:
Remove module 410, for remove in at least different video data of two-way except the target video data it
Outer video data.
Optionally, as shown in figure 8, the mobile terminal 400 further include:
Display module 411, for showing preview video data in shooting preview interface, wherein the preview video number
According to be compiled using code rate corresponding with the duration of shooting to the video of shooting in at least different video data of two-way
The video data that code obtains.
Mobile terminal 400 can be realized each process that mobile terminal is realized in Fig. 1 and embodiment of the method shown in Fig. 3,
To avoid repeating, which is not described herein again.
Mobile terminal 400 can effectively take into account video according to shooting duration of video flexible choice encoder bit rate so as to reach
The purpose of image quality and video file size.
Inventive embodiments also provide a kind of mobile terminal, including processor, memory, are stored on the memory and can
The computer program run on the processor, the computer program realize above-mentioned code rate control when being executed by the processor
Each process of embodiment of the method processed, and identical technical effect can be reached, to avoid repeating, which is not described herein again.
The embodiment of the present invention also provides a kind of computer readable storage medium, is stored thereon with computer program, the program
The step in the bit rate control method in the embodiment of the present invention is realized when being executed by processor.
Referring to Fig. 9, Fig. 9 is the structure chart that the present invention implements another mobile terminal provided, the mobile terminal energy
It realizes the details of Fig. 1 and the bit rate control method in embodiment shown in Fig. 3, and reaches identical effect.As shown in figure 9, moving
Dynamic terminal 900 includes: at least one processor 901, memory 902, at least one network interface 904 and other users interface
903.Various components in mobile terminal 900 are coupled by bus system 905.It is understood that bus system 905 is for real
Connection communication between these existing components.Bus system 905 further includes power bus, controls always in addition to including data/address bus
Line and status signal bus in addition.But for the sake of clear explanation, various buses are all designated as bus system 905 in Fig. 9.
Wherein, user interface 903 may include display, keyboard or pointing device (for example, mouse, trace ball
(trackball), touch-sensitive plate or touch screen etc.).
It is appreciated that the memory 902 in the embodiment of the present invention can be volatile memory or nonvolatile memory,
It or may include both volatile and non-volatile memories.Wherein, nonvolatile memory can be read-only memory (Read-
Only Memory, ROM), programmable read only memory (Programmable ROM, PROM), the read-only storage of erasable programmable
Device (Erasable PROM, EPROM), electrically erasable programmable read-only memory (Electrically EPROM, EEPROM) or
Flash memory.Volatile memory can be random access memory (Random Access Memory, RAM), be used as external high
Speed caching.By exemplary but be not restricted explanation, the RAM of many forms is available, such as static random access memory
(Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), Synchronous Dynamic Random Access Memory
(Synchronous DRAM, SDRAM), double data speed synchronous dynamic RAM (Double Data Rate
SDRAM, DDRSDRAM), enhanced Synchronous Dynamic Random Access Memory (Enhanced SDRAM, ESDRAM), synchronized links
Dynamic random access memory (Synch link DRAM, SLDRAM) and direct rambus random access memory (Direct
Rambus DRAM, DRDRAM).The memory 902 of system and method described herein be intended to include but be not limited to these and it is any
The memory of other suitable types.
In some embodiments, memory 902 stores following element, executable modules or data structures, or
Their subset of person or their superset: operating system 9021 and application program 9022.
Wherein, operating system 9021 include various system programs, such as ccf layer, core library layer, driving layer etc., are used for
Realize various basic businesses and the hardware based task of processing.Application program 9022 includes various application programs, such as media
Player (Media Player), browser (Browser) etc., for realizing various applied business.Realize the embodiment of the present invention
The program of method may be embodied in application program 9022.
In embodiments of the present invention, mobile terminal 900 further include: be stored on memory 902 and can be on processor 901
The computer program of operation, specifically, can be the computer program in application program 9022, computer program is by processor
901 realize following steps when executing:
If receive shooting video operational order, using at least two different code rates respectively to the video of shooting into
Row coding, to obtain the different video data of at least two-way；
If receiving the operational order for stopping shooting video, it is determined that the target duration of the target video shot；
According to the corresponding relationship of the duration and code rate that pre-establish, the determining and matched target bit rate of target duration；
Export target video data, wherein the target video data is in at least different video data of two-way
The video data that the target video is encoded using the target bit rate.
The method that the embodiments of the present invention disclose can be applied in processor 901, or be realized by processor 901.
Processor 901 may be a kind of IC chip, the processing capacity with signal.During realization, the above method it is each
Step can be completed by the integrated logic circuit of the hardware in processor 901 or the instruction of software form.Above-mentioned processing
Device 901 can be general processor, digital signal processor (Digital Signal Processor, DSP), dedicated integrated electricity
Road (Application Specific Integrated Circuit, ASIC), ready-made programmable gate array (Field
Programmable Gate Array, FPGA) either other programmable logic device, discrete gate or transistor logic,
Discrete hardware components.It may be implemented or execute disclosed each method, step and the logic diagram in the embodiment of the present invention.It is general
Processor can be microprocessor or the processor is also possible to any conventional processor etc..In conjunction with institute of the embodiment of the present invention
The step of disclosed method, can be embodied directly in hardware decoding processor and execute completion, or with the hardware in decoding processor
And software module combination executes completion.Software module can be located at random access memory, and flash memory, read-only memory may be programmed read-only
In the computer readable storage medium of this fields such as memory or electrically erasable programmable memory, register maturation.The meter
Calculation machine readable storage medium storing program for executing is located at memory 902, and processor 901 reads the information in memory 902, completes in conjunction with its hardware
The step of stating method.Specifically, computer program is stored on the computer readable storage medium, processor 901 executes the meter
It realizes when calculation machine program such as the step in above-mentioned bit rate control method embodiment.
It is understood that embodiments described herein can with hardware, software, firmware, middleware, microcode or its
Combination is to realize.For hardware realization, processing unit be may be implemented in one or more specific integrated circuit (Application
Specific Integrated Circuits, ASIC), digital signal processor (Digital Signal Processing,
DSP), digital signal processing appts (DSP Device, DSPD), programmable logic device (Programmable Logic
Device, PLD), field programmable gate array (Field-Programmable Gate Array, FPGA), general processor,
In controller, microcontroller, microprocessor, other electronic units for executing herein described function or combinations thereof.
For software implementations, it can be realized herein by executing the module (such as process, function etc.) of function described herein
The technology.Software code is storable in memory and is executed by processor.Memory can in the processor or
It is realized outside processor.
Optionally, following steps be can also be achieved when computer program is executed by processor 901:
Obtain the maximum allowable duration of the video of shooting；
According to the maximum allowable duration, at least two different duration threshold values are determined, wherein described at least two is different
Duration threshold value in each duration threshold value be respectively less than or be equal to the maximum allowable duration；
Determine code rate corresponding to each duration threshold value in described at least two different duration threshold values respectively, with obtain to
Few two different code rates, wherein code rate corresponding to the first duration threshold value in described at least two different duration threshold values
Corresponding code rate described in the second duration threshold value in the duration threshold value different greater than described at least two, the first duration threshold value
Less than the second duration threshold value；
According to code rate corresponding to each duration threshold value in described at least two different duration threshold values, the duration is established
With the corresponding relationship of code rate.
Optionally, following steps be can also be achieved when computer program is executed by processor 901:
If the duration of shooting is more than target duration threshold value, stop using in described at least two different code rates with it is described
The corresponding code rate of target duration threshold value encodes the video of shooting, wherein the target duration threshold value is described at least two
Any one duration threshold value in a different duration threshold value.
Optionally, following steps be can also be achieved when computer program is executed by processor 901:
According to the relationship of code rate and shooting duration of video, each duration in described at least two different duration threshold values is calculated separately
Code rate corresponding to threshold value, to obtain at least two different code rates, wherein when code rate is equal to video file size divided by shooting
Long, video file size is preset value.
Optionally, following steps be can also be achieved when computer program is executed by processor 901:
Remove the video data in at least different video data of two-way in addition to the target video data.
Optionally, following steps be can also be achieved when computer program is executed by processor 901:
Preview video data are shown in shooting preview interface, wherein the preview video data are at least two-way
The video data that the video of shooting is encoded using code rate corresponding with the duration of shooting in different video datas.
Mobile terminal 900 can be realized each process that mobile terminal is realized in Fig. 1 and embodiment of the method shown in Fig. 3,
To avoid repeating, which is not described herein again.
Mobile terminal 900 can effectively take into account video according to shooting duration of video flexible choice encoder bit rate so as to reach
The purpose of image quality and video file size.
Those of ordinary skill in the art may be aware that list described in conjunction with the examples disclosed in the embodiments of the present disclosure
Member and algorithm steps can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually
It is implemented in hardware or software, the specific application and design constraint depending on technical solution.Professional technician
Each specific application can be used different methods to achieve the described function, but this realization is it is not considered that exceed
The scope of the present invention.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
In embodiment provided herein, it should be understood that disclosed device and method can pass through others
Mode is realized.For example, the apparatus embodiments described above are merely exemplary, for example, the division of the unit, only
A kind of logical function partition, there may be another division manner in actual implementation, for example, multiple units or components can combine or
Person is desirably integrated into another system, or some features can be ignored or not executed.Another point, shown or discussed is mutual
Between coupling, direct-coupling or communication connection can be through some interfaces, the INDIRECT COUPLING or communication link of device or unit
It connects, can be electrical property, mechanical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple
In network unit.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme
's.
It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit
It is that each unit physically exists alone, can also be integrated in one unit with two or more units.
It, can be with if the function is realized in the form of SFU software functional unit and when sold or used as an independent product
It is stored in a computer readable storage medium.Based on this understanding, technical solution of the present invention is substantially in other words
The part of the part that contributes to existing technology or the technical solution can be embodied in the form of software products, the meter
Calculation machine software product is stored in a storage medium, including some instructions are used so that a computer equipment (can be a
People's computer, server or network equipment etc.) it performs all or part of the steps of the method described in the various embodiments of the present invention.
And storage medium above-mentioned includes: that USB flash disk, mobile hard disk, ROM, RAM, magnetic or disk etc. are various can store
The medium of program code.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be subject to the protection scope in claims.
Claims (14)
1. a kind of bit rate control method is applied to mobile terminal, which is characterized in that the described method includes:
If receiving the operational order of shooting video, the video of shooting is compiled respectively using at least two different code rates
Code, to obtain the different video data of at least two-way；
If receiving the operational order for stopping shooting video, it is determined that the target duration of the target video shot；
According to the corresponding relationship of the duration and code rate that pre-establish, the determining and matched target bit rate of target duration, wherein
The more long corresponding code rate of duration is smaller in the corresponding relationship；
Export target video data, wherein the target video data is to use in at least different video data of two-way
The video data that the target bit rate encodes the target video.
2. the method according to claim 1, wherein if the operational order for receiving shooting video, is adopted
Before the step of being encoded respectively to the video of shooting at least two different code rates, the method also includes:
Obtain the maximum allowable duration of the video of shooting；
According to the maximum allowable duration, determine at least two different duration threshold values, wherein described at least two it is different when
Each duration threshold value is respectively less than or is equal to the maximum allowable duration in long threshold value；
Determine code rate corresponding to each duration threshold value in described at least two different duration threshold values, respectively to obtain at least two
A different code rate, wherein code rate corresponding to the first duration threshold value in described at least two different duration threshold values is greater than
Corresponding code rate described in the second duration threshold value in described at least two different duration threshold values, the first duration threshold value are less than
The second duration threshold value；
According to code rate corresponding to each duration threshold value in described at least two different duration threshold values, the duration and code are established
The corresponding relationship of rate.
3. according to the method described in claim 2, it is characterized in that, if the operational order for receiving shooting video, is adopted
After the step of being encoded respectively to the video of shooting at least two different code rates, if described receive stopping shooting view
The operational order of frequency, it is determined that before the step of the target duration of the target video shot, the method also includes:
If the duration of shooting is more than target duration threshold value, stop using in described at least two different code rates with the target
The corresponding code rate of duration threshold value encodes the video of shooting, wherein the target duration threshold value is not described at least two not
Any one duration threshold value in same duration threshold value.
4. according to the method in claim 2 or 3, which is characterized in that it is described determine respectively described at least two it is different when
Code rate corresponding to each duration threshold value in long threshold value, the step of to obtain at least two different code rates, comprising:
According to the relationship of code rate and shooting duration of video, each duration threshold value in described at least two different duration threshold values is calculated separately
Corresponding code rate, to obtain at least two different code rates, wherein code rate is equal to video file size divided by shooting duration of video,
Video file size is preset value.
5. method according to any one of claim 1-3, which is characterized in that the step of the output target video data
Later, the method also includes:
Remove the video data in at least different video data of two-way in addition to the target video data.
6. method according to any one of claim 1-3, which is characterized in that if the operation for receiving shooting video
After the step of instructing, then being encoded respectively to the video of shooting using at least two different code rates, if described receive
Stop the operational order of shooting video, it is determined that before the step of the target duration of the target video shot, the method
Further include:
Preview video data are shown in shooting preview interface, wherein the preview video data are that at least two-way is different
Video data in the video data that the video of shooting is encoded using code rate corresponding with the duration of shooting.
7. a kind of mobile terminal characterized by comprising
Coding module, if the operational order for receiving shooting video, using at least two different code rates respectively to bat
The video taken the photograph is encoded, to obtain the different video data of at least two-way；
First determining module, if for receiving the operational order for stopping shooting video, it is determined that the target video shot
Target duration；
Second determining module, for the corresponding relationship according to the duration and code rate pre-established, the determining and target duration
The target bit rate matched, wherein the more long corresponding code rate of duration is smaller in the corresponding relationship；
Output module, for exporting target video data, wherein the target video data is at least different view of two-way
The video data that frequency encodes the target video using the target bit rate in.
8. mobile terminal according to claim 7, which is characterized in that the mobile terminal further include:
Module is obtained, the maximum allowable duration of the video for obtaining shooting；
Third determining module, for determining at least two different duration threshold values, wherein institute according to the maximum allowable duration
It states each duration threshold value at least two different duration threshold values and is respectively less than or is equal to the maximum allowable duration；
4th determining module, for being determined in described at least two different duration threshold values respectively corresponding to each duration threshold value
Code rate, to obtain at least two different code rates, wherein the first duration threshold value in described at least two different duration threshold values
Corresponding code rate is greater than corresponding code rate described in the second duration threshold value in described at least two different duration threshold values, described
First duration threshold value is less than the second duration threshold value；
Module is established, for the code rate according to corresponding to each duration threshold value in described at least two different duration threshold values, is built
Found the corresponding relationship of the duration and code rate.
9. mobile terminal according to claim 8, which is characterized in that the mobile terminal further include:
Stopping modular stops if the duration for shooting is more than target duration threshold value using described at least two different codes
Code rate corresponding with the target duration threshold value encodes the video of shooting in rate, wherein the target duration threshold value is
Any one duration threshold value in described at least two different duration threshold values.
10. mobile terminal according to claim 8 or claim 9, which is characterized in that the 4th determining module is used for according to code rate
With the relationship of shooting duration of video, code corresponding to each duration threshold value in described at least two different duration threshold values is calculated separately
Rate, to obtain at least two different code rates, wherein code rate is equal to video file size divided by shooting duration of video, and video file is big
Small is preset value.
11. the mobile terminal according to any one of claim 7-9, which is characterized in that the mobile terminal further include:
Module is removed, for removing the video in at least different video data of two-way in addition to the target video data
Data.
12. the mobile terminal according to any one of claim 7-9, which is characterized in that the mobile terminal further include:
Display module, for showing preview video data in shooting preview interface, wherein the preview video data are described
The video of shooting is encoded using code rate corresponding with the duration of shooting at least in the different video data of two-way
Video data.
13. a kind of mobile terminal, comprising: memory, processor and storage are on a memory and the meter that can run on a processor
Calculation machine program, which is characterized in that the processor is realized when executing the computer program such as any one of claim 1-6 institute
The step in bit rate control method stated.
14. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that the program is by processor
It realizes when execution such as the step in bit rate control method of any of claims 1-6.
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| CN108737862A (en) * | 2018-05-23 | 2018-11-02 | 浙江大华技术股份有限公司 | A kind of method and apparatus generating video code flow segment |
| CN111355960B (en) * | 2018-12-21 | 2021-05-04 | 北京字节跳动网络技术有限公司 | Method and device for synthesizing video file, mobile terminal and storage medium |
| CN109862019B (en) * | 2019-02-20 | 2021-10-22 | 联想(北京)有限公司 | Data processing method, device and system |
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