CN106791930B - Video processing method and device - Google Patents
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
- H04N21/2343—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
- H04N21/234309—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements by transcoding between formats or standards, e.g. from MPEG-2 to MPEG-4 or from Quicktime to Realvideo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
- H04N21/845—Structuring of content, e.g. decomposing content into time segments
- H04N21/8456—Structuring of content, e.g. decomposing content into time segments by decomposing the content in the time domain, e.g. in time segments
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Abstract
The invention discloses a video processing method and a video processing device, wherein the method comprises the following steps: receiving a video playing request from a terminal; in the process that the terminal plays each fragment in the video, determining whether a transcoding result of a next fragment adjacent to the fragment is stored; if so, directly sending the specified information of the transcoding result of the next fragment to the terminal so that the terminal can obtain the transcoding result of the next fragment according to the specified information and play the transcoding result; if not, transcoding the next fragment, storing the transcoding result, and sending the specified information of the transcoding result to the terminal; and screening the transcoding results stored in the first preset time length every time the first preset time length passes, and deleting the transcoding results which do not meet the reservation requirement. By applying the scheme of the invention, computing resources, storage resources and the like can be saved.
Description
[ technical field ] A method for producing a semiconductor device
The present invention relates to network technologies, and in particular, to a video processing method and apparatus.
[ background of the invention ]
Currently, with the continuous development of video technology, video viewing has become a strong demand in many industries. As the terminal used by the user for watching the video is more and more differentiated, the transcoding server is required to transcode the original video into media streams with different resolutions, bit rates and frame streams according to different requirements, different terminals, different network accesses and the like, so as to provide uniform user experience for users with different terminals and different networks.
In the existing video on demand and other scenes, the transcoding server generally adopts the following processing modes:
in a first mode
For a certain video (video file), transcoding the whole video after receiving a video playing request from a terminal, deleting a transcoding result, namely a file obtained by transcoding after a user watches the video in order to control the storage cost, re-transcoding the whole video when receiving a new video playing request, deleting the transcoding result again after the user watches the video, and repeating the steps.
However, this method causes the following problems: the whole video needs to be transcoded continuously, so that the computing resource consumption of the transcoding server is increased; in addition, for many users, the user may exit after opening a video and watching the video for a short time, and transcoding is performed on the entire video, thereby causing a serious waste of computing resources.
Mode two
For a certain video, after a video playing request from a terminal is received for the first time, transcoding is carried out on the whole video, and a transcoding result is stored, so that the transcoding result is not deleted after a user watches the video, and the transcoding is not required to be carried out again when a watching demand exists later.
But this approach increases the consumption of storage resources.
[ summary of the invention ]
In view of this, the present invention provides a video processing method and apparatus, which can save computing resources and storage resources.
The specific technical scheme is as follows:
a video processing method, comprising:
receiving a video playing request from a terminal;
determining whether a transcoding result of a next fragment adjacent to the fragment is stored in the process of playing each fragment in the video by the terminal;
if so, directly sending the specified information of the transcoding result to the terminal so that the terminal can obtain the transcoding result according to the specified information and play the transcoding result;
if not, transcoding the next fragment, storing a transcoding result, and sending the specified information of the transcoding result to the terminal;
and screening the transcoding results stored in the first preset time length every time the first preset time length passes, and deleting the transcoding results which do not meet the reservation requirement.
A video processing apparatus comprising: the system comprises a transcoding module, a storage module and a management module;
the transcoding module is used for receiving a video playing request from a terminal; determining whether a transcoding result of a next fragment adjacent to the fragment is stored in the storage module in the process of playing each fragment in the video by the terminal; if so, directly sending the specified information of the transcoding result to the terminal so that the terminal can obtain the transcoding result according to the specified information and play the transcoding result; if not, transcoding the next fragment, storing a transcoding result into the storage module, and sending the specified information of the transcoding result to the terminal;
and the management module is used for screening the transcoding results stored in the storage module within the first preset time length and deleting the transcoding results which do not meet the reservation requirement every time the first preset time length passes.
Based on the introduction, the scheme of the invention is adopted to determine whether the transcoding result of the next fragment is stored or not in the process of watching a certain fragment in the video by a user, if so, the stored transcoding result is directly used, otherwise, the next fragment is transcoded.
[ description of the drawings ]
Fig. 1 is a flowchart of an embodiment of a video processing method according to the present invention.
Fig. 2 is a schematic structural diagram of a video processing apparatus according to an embodiment of the invention.
[ detailed description ] embodiments
In order to make the technical solution of the present invention clearer and more obvious, the solution of the present invention is further described in detail below by referring to the drawings and examples.
Example one
Fig. 1 is a flowchart of an embodiment of a video processing method according to the present invention. In practical applications, the execution subject of the flow shown in fig. 1 may be a transcoding server or the like. As shown in fig. 1, the following specific processing is included.
In 11, a video play request is received from a terminal.
A user may request to view a certain video through a terminal.
After a video playing request from a terminal is received, transcoding parameters can be determined according to the characteristics of the terminal and a network and the like, so that transcoding can be performed according to the transcoding parameters.
How to determine the transcoding parameters is prior art.
In 12, in the process of playing each segment in the video by the terminal, whether the transcoding result of the next segment adjacent to the segment is stored is determined, if not, 13 is executed, and if yes, 14 is executed.
A video is usually composed of a plurality of segments, and each segment can be played in turn according to the sequence of each segment, and the playing time lengths of any two segments may be the same or different.
In the process of playing each fragment in the video by the terminal, the following processes can be respectively carried out: it is determined whether the transcoding result of the next fragment adjacent to the fragment is saved, if not, 13 is executed, and if yes, 14 is directly executed.
In the process of playing each segment in the video by the terminal, when to judge to determine whether the transcoding result of the next segment is stored may be determined according to actual needs, for example, when to judge may be determined according to the playing time length of the segment currently being played and the playing time length of the next segment.
If the playing time of the currently playing segment is 30 seconds and the playing time of the next segment is 60 seconds, the judgment can be performed when the currently playing segment is played for 20 seconds, and if the playing time of the next segment is 120 seconds, the judgment can be performed when the currently playing segment is played for 10 seconds, that is, a longer time is reserved, so as to ensure that the next segment can be transcoded before the currently playing segment is played.
Of course, the above description is only for illustration and is not intended to limit the technical solution of the present invention, and the specific time for determining may be determined according to actual needs.
In 13, the next fragment is transcoded and the result of the transcoding is saved.
If the next fragment needs to be transcoded, the next fragment may be transcoded according to the transcoding parameters determined in 11, so as to obtain a transcoding result, and the transcoding result is stored, and then executed 14.
In 14, the specific information of the transcoding result of the next segment is sent to the terminal, so that the terminal can obtain the transcoding result of the next segment according to the specific information and play the transcoding result.
If the next fragment needs to be transcoded, after the transcoding is completed, the specified information of the transcoding result of the next fragment can be sent to the terminal, so that after the terminal finishes playing the currently played fragment, the transcoding result of the next fragment can be obtained according to the specified information of the transcoding result of the next fragment, and the next fragment can be played.
If the transcoding result of the next fragment is already stored, that is, the next fragment does not need to be transcoded, the specific information of the transcoding result of the next fragment can be directly sent to the terminal.
The specific information may include a storage address, index information, and the like, and it is prior art to specifically include what content is included in the specific information, how to obtain a transcoding result of a next slice according to the specific information of the transcoding result of the next slice, and the like.
The processes described in 12-14 can be illustrated as follows:
assuming that a video comprises 10 slices in total, for convenience of description, the slices are numbered as 1-10 in sequence;
then, in the process of playing the segment 2, whether the transcoding result of the segment 3 is stored or not can be determined, if yes, the specified information of the transcoding result of the segment 3 can be directly sent to the terminal, if not, the segment 3 can be transcoded first, and then the specified information of the transcoding result of the segment 3 is sent to the terminal;
similarly, in the process of playing the fragment 3, whether the transcoding result of the fragment 4 is stored can be determined, if yes, the specified information of the transcoding result of the fragment 4 can be directly sent to the terminal, if not, the fragment 4 can be transcoded firstly, and then the specified information of the transcoding result of the fragment 4 is sent to the terminal; and so on;
specifically, for segment 1, before segment 1 is played, it may be determined whether the transcoding result of segment 1 is stored, if so, the specific information of the transcoding result of segment 1 may be directly sent to the terminal, and if not, segment 1 may be transcoded first, and then the specific information of the transcoding result of segment 1 is sent to the terminal.
In 15, every time a first predetermined time length passes, screening the transcoding results stored in the first predetermined time length, and deleting the transcoding results which do not meet the retention requirement.
If the transcoding results of the played fragments are all stored only by processing in the manner of 11-14, a large amount of storage resources will be consumed.
To overcome the above problem, the following process may be periodically performed as described in fig. 15: and screening the transcoding results stored in the first preset time length every time the first preset time length passes, and deleting the transcoding results which do not meet the reservation requirement.
For example, whether the playing heat of the segment meets the heat requirement or not may be respectively determined for the segment corresponding to each transcoding result stored within the first predetermined time, if so, the transcoding result of the segment is retained, otherwise, the transcoding result of the segment is deleted, that is, the granularity for distinguishing the hot video and the non-hot video is refined into the segments.
Specifically, for a segment corresponding to each transcoding result stored within a first predetermined time, the average playing integrity and the total playing frequency of the segment within the first predetermined time may be respectively obtained; if the average playing integrity and the total playing times are both greater than the respective corresponding thresholds, the playing heat of the segment can be considered to meet the heat requirement.
The specific value of the first predetermined time period may be determined according to actual needs, such as a day.
For a certain fragment, multiple users may watch the fragment within the time length of one day, each user may obtain a playing integrity, and the playing integrity of the users is averaged to obtain an average playing integrity of the fragment.
The value range of the playing integrity may be (0, 1), for a certain fragment, if the time length for the user to view the fragment is equal to the playing time length of the fragment, the playing integrity is 1, if the time length for the user to view the fragment is half of the playing time length of the fragment, the playing integrity is 0.5, and so on.
In addition, for a certain segment, no matter whether the user completely watches the segment, the counted total playing times are increased by one as long as the user watches the segment once.
In this way, when the transcoding results stored within the first predetermined time period are periodically screened, the transcoding results of the segments with the average playing integrity and the total playing times larger than the respective corresponding threshold values can be retained, and the transcoding results of the segments with the average playing integrity and the total playing times larger than the respective corresponding threshold values can be deleted.
By adopting the processing mode, in the process that a user watches a certain fragment in the video, whether the transcoding result of the next fragment adjacent to the fragment is stored or not is determined, if yes, the stored transcoding result is directly used, otherwise, the next fragment is transcoded.
In addition, when the transcoding results stored within the first preset time period are periodically screened, whether the segment belongs to the first segment in the video can be further determined according to the segment corresponding to each stored transcoding result, and if yes, the transcoding result of the segment is reserved.
As can be known from the above description, when the transcoding results stored in the first predetermined time period are periodically screened, if a segment corresponding to one transcoding result satisfies one of the following conditions: if the playing heat meets the heat requirement and is the first fragment in the video, the transcoding result of the fragment is reserved, and if not, the transcoding result of the fragment is deleted.
Therefore, after a video playing request of the terminal is received, the appointed information of the transcoding result of the first fragment can be directly sent to the terminal, so that the terminal can play the first fragment conveniently, the time for transcoding the first fragment is saved, the first screen display speed is increased, and the first screen experience is improved.
In order to further save the storage resources, the transcoding result with the storage duration exceeding a second predetermined duration may also be deleted, where the second predetermined duration is greater than the first predetermined duration, and a specific value of the second predetermined duration may also be determined according to an actual need, for example, one month.
Considering that the playing popularity of a video changes continuously with time, for example, if a previous month is compared with a popular video, and a next month may not be popular, the transcoding results of the video segments will have less chance to be used, and accordingly, in order to save storage resources, the transcoding results stored for more than one month may be deleted, so as to make room for storing new transcoding results.
The above is a description of method embodiments, and the embodiments of the present invention are further described below by way of apparatus embodiments.
Example two
Fig. 2 is a schematic structural diagram of a video processing apparatus according to an embodiment of the present invention, and as shown in fig. 2, the video processing apparatus includes a transcoding module 21, a storage module 22, and a management module 23.
A transcoding module 21, configured to receive a video playing request from a terminal; in the process that the terminal plays each fragment in the video, determining whether a transcoding result of a next fragment adjacent to the fragment is stored in the storage module 22; if so, directly sending the specified information of the transcoding result of the next fragment to the terminal so that the terminal can obtain the transcoding result of the next fragment according to the specified information and play the transcoding result; if not, transcoding the next fragment, storing the transcoding result in the storage module 22, and sending the specified information of the transcoding result to the terminal.
The management module 23 is configured to, every time the first predetermined time period passes, screen the transcoding result stored in the storage module 22 within the first predetermined time period, and delete the transcoding result that does not meet the reservation requirement.
After receiving the video playing request from the terminal, the transcoding module 21 may determine transcoding parameters according to the characteristics of the terminal and the network, so as to transcode the next fragment according to the transcoding parameters.
In the process of playing each fragment in the video by the terminal, the transcoding module 21 may perform the following processing respectively: and determining whether the storage module 22 stores the transcoding result of the next fragment adjacent to the fragment, if not, transcoding the next fragment, storing the transcoding result in the storage module 22, and sending the specified information of the transcoding result of the next fragment to the terminal, and if so, directly sending the specified information of the transcoding result of the next fragment to the terminal.
If the transcoding results of the played segments are all stored according to the above processing method, a large amount of storage resources will be consumed.
For this purpose, the management module 23 may periodically perform the following: and screening the transcoding results stored in the storage module 22 within the first preset time length every time the first preset time length passes, and deleting the transcoding results which do not meet the retention requirement.
For example, the management module 23 may determine, for a segment corresponding to each transcoding result stored in the storage module 22 within a first predetermined time, whether the playing heat of the segment meets the heat requirement, if so, retain the transcoding result of the segment, and otherwise, delete the transcoding result of the segment.
Specifically, the management module 23 may respectively obtain the average playing integrity and the total playing frequency of the segment within the first predetermined time, and if both the average playing integrity and the total playing frequency are greater than the respective corresponding thresholds, determine that the playing heat of the segment meets the heat requirement.
The specific value of the first predetermined time period may be determined according to actual needs, such as a day.
For a certain fragment, multiple users may watch the fragment within the time length of one day, each user may obtain a playing integrity, and the playing integrity of the users is averaged to obtain an average playing integrity of the fragment.
The value range of the playing integrity may be (0, 1), for a certain fragment, if the time length for the user to view the fragment is equal to the playing time length of the fragment, the playing integrity is 1, if the time length for the user to view the fragment is half of the playing time length of the fragment, the playing integrity is 0.5, and so on.
In addition, for a certain segment, no matter whether the user completely watches the segment, the counted total playing times are increased by one as long as the user watches the segment once.
In addition, the management module 23 may further determine, for a segment corresponding to each transcoding result stored in the storage module 22 within a first predetermined time, whether the segment belongs to a first segment in the video where the segment is located, and if so, retain the transcoding result of the segment.
As can be seen from the above description, when the management module 23 periodically filters the transcoding results stored in the first predetermined time period, if a segment corresponding to a transcoding result meets one of the following conditions: if the playing heat meets the heat requirement and is the first fragment in the video, the transcoding result of the fragment is reserved, and if not, the transcoding result of the fragment is deleted.
Therefore, after receiving a video playing request from the terminal, the transcoding module 21 can directly send the designated information of the transcoding result of the first fragment to the terminal, so that the time for transcoding the first fragment is saved, the first screen display speed is increased, and the first screen experience is improved.
In addition, in order to further save the storage resources, the management module 23 may also delete the transcoding result stored in the storage module 22 for a time period exceeding a second predetermined time period, where the second predetermined time period is longer than the first predetermined time period.
For a specific work flow of the embodiment of the apparatus shown in fig. 2, please refer to the corresponding description in the foregoing method embodiment, which is not repeated herein.
In a word, the scheme of the invention can save computing resources and storage resources, can accelerate the speed of first screen display, and is simple and convenient to realize, thereby being convenient for popularization and promotion.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described device embodiments are merely illustrative, and for example, the division of the units is only one logical functional division, and other divisions may be realized in practice.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions to enable a computer device (which may be a personal computer, a server, or a network device) or a processor (processor) to execute some steps of the methods according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A video processing method, comprising:
receiving a video playing request from a terminal;
determining whether a transcoding result of a next fragment adjacent to the fragment is stored in the process of playing each fragment in the video by the terminal;
if so, directly sending the specified information of the transcoding result to the terminal so that the terminal can obtain the transcoding result according to the specified information and play the transcoding result;
if not, transcoding the next fragment, storing a transcoding result, and sending the specified information of the transcoding result to the terminal;
every time a first preset time length passes, screening the transcoding results stored in the first preset time length, and deleting the transcoding results which do not meet the retention requirement, wherein the method comprises the following steps: and respectively determining whether the playing heat of the fragments meets the heat requirement or not aiming at the fragments corresponding to each transcoding result stored in the first preset time, if so, reserving the transcoding results of the fragments, and otherwise, deleting the transcoding results of the fragments.
2. The method of claim 1,
after receiving the video playing request from the terminal, the method further includes:
determining transcoding parameters according to the characteristics of the terminal and the network;
the transcoding the next fragment comprises:
and transcoding the next fragment according to the transcoding parameters.
3. The method of claim 1,
the determining whether the playing popularity of the segment meets the popularity requirement comprises:
respectively acquiring the average playing integrity and the total playing times of the fragments within the first preset time;
and if the average playing integrity and the total playing times are both larger than the respective corresponding threshold values, determining that the playing heat of the segment meets the heat requirement.
4. The method of claim 1,
every time when the first preset time length passes, screening the transcoding results stored in the first preset time length, and deleting the transcoding results which do not meet the retention requirement further comprises:
respectively determining whether the segment belongs to a first segment in the video or not aiming at the segment corresponding to each transcoding result stored in the first preset time, and if so, reserving the transcoding result of the segment;
after receiving the video playing request from the terminal, the method further includes:
and directly sending the specified information of the transcoding result of the first fragment in the video to the terminal.
5. The method according to any one of claims 1 to 4,
the method further comprises the following steps:
deleting the transcoding result with the storage time exceeding a second preset time;
the second predetermined length of time is greater than the first predetermined length of time.
6. A video processing apparatus, comprising: the system comprises a transcoding module, a storage module and a management module;
the transcoding module is used for receiving a video playing request from a terminal; determining whether a transcoding result of a next fragment adjacent to the fragment is stored in the storage module in the process of playing each fragment in the video by the terminal; if so, directly sending the specified information of the transcoding result to the terminal so that the terminal can obtain the transcoding result according to the specified information and play the transcoding result; if not, transcoding the next fragment, storing a transcoding result into the storage module, and sending the specified information of the transcoding result to the terminal;
the management module is used for screening the transcoding results stored in the storage module within a first preset time length and deleting the transcoding results which do not meet the reservation requirement every time the first preset time length passes;
the management module determines whether the playing heat of the fragments meets the heat requirement or not aiming at the fragments corresponding to each transcoding result stored in the storage module within the first preset time, if so, the transcoding results of the fragments are reserved, and otherwise, the transcoding results of the fragments are deleted.
7. The apparatus of claim 6,
the transcoding module is further configured to,
after a video playing request from a terminal is received, transcoding parameters are determined according to the characteristics of the terminal and a network, so that the next fragment is transcoded according to the transcoding parameters.
8. The apparatus of claim 6,
the management module respectively obtains the average playing integrity and the total playing times of the fragments within the first preset time, and if the average playing integrity and the total playing times are both greater than the respective corresponding threshold values, the playing heat of the fragments is determined to meet the heat requirement.
9. The apparatus of claim 6,
the management module is further configured to,
respectively determining whether the segment belongs to the first segment in the video or not aiming at the segment corresponding to each transcoding result stored in the storage module within the first preset time, and if so, reserving the transcoding result of the segment;
the transcoding module is further configured to,
after a video playing request from a terminal is received, the appointed information of the transcoding result of the first fragment of the video is directly sent to the terminal.
10. The apparatus according to any one of claims 6 to 9,
the management module is further configured to,
deleting the transcoding result with the storage time length exceeding a second preset time length in the storage module;
the second predetermined length of time is greater than the first predetermined length of time.
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| CN107333148B (en) * | 2017-06-23 | 2019-01-08 | 腾讯科技（深圳）有限公司 | Method for processing video frequency and device, computer storage medium and equipment |
| CN108174290B (en) * | 2018-01-25 | 2019-05-24 | 北京百度网讯科技有限公司 | Method and apparatus for handling video |
| CN110213616B (en) * | 2018-05-15 | 2021-12-28 | 腾讯科技（深圳）有限公司 | Video providing method, video obtaining method, video providing device, video obtaining device and video providing equipment |
| CN108966014B (en) * | 2018-08-01 | 2021-02-02 | 中国联合网络通信集团有限公司 | Method and system for evaluating heat video |
| CN111565316B (en) * | 2020-07-15 | 2020-10-23 | 腾讯科技（深圳）有限公司 | Video processing method, video processing device, computer equipment and storage medium |
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