CN107888938B - A kind of network video playback method and its device - Google Patents
A kind of network video playback method and its device Download PDFInfo
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- CN107888938B CN107888938B CN201610868014.4A CN201610868014A CN107888938B CN 107888938 B CN107888938 B CN 107888938B CN 201610868014 A CN201610868014 A CN 201610868014A CN 107888938 B CN107888938 B CN 107888938B
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- 230000005059 dormancy Effects 0.000 claims abstract description 140
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—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
-
- 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
- H04N21/23406—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving management of server-side video buffer
-
- 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
- H04N21/23418—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving operations for analysing video streams, e.g. detecting features or characteristics
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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
- H04N21/234381—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements by altering the temporal resolution, e.g. decreasing the frame rate by frame skipping
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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
- H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
- H04N21/23805—Controlling the feeding rate to the network, e.g. by controlling the video pump
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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
- H04N21/24—Monitoring of processes or resources, e.g. monitoring of server load, available bandwidth, upstream requests
- H04N21/2407—Monitoring of transmitted content, e.g. distribution time, number of downloads
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- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The embodiment of the invention provides a kind of network video playback method and its device, the method is applied in view networking, comprising: lines up middle reading video frame from video cache；The frame period between the video frame is acquired in real time, and analysis obtains playing the dormancy time of the video frame；Extract the video cache line up in video frame number, and the video frame number is compared and analyzed；If the video frame number is less than minimum threshold, increase the dormancy time by pre-defined rule；If the video frame number is greater than max-thresholds, reduce the dormancy time by pre-defined rule；Based on the current dormancy time, the video frame is played.The present invention can analyze to obtain currently in real time from the frame period between the video frame that video cache lines up middle reading, and middle video frame number is lined up according to caching, analysis obtains dormancy time required for playing video, to solve the problem of to occur due to the not accurate enough video pictures of video time stamp Caton and shake.
Description
Technical field
The present invention relates to view networking technology fields, more particularly to a kind of network video playback method and a kind of network video
Playing device.
Background technique
With the fast development of the network technology, the two-way communications such as video conference, video teaching the life of user, work,
Study etc. is widely available.
But during network video plays, often since network video timestamp itself is not accurate enough, cause
Frame period is inconsistent between two frame videos, so that video pictures occur when appearing in view networked terminals (such as PCTV) broadcasting video flowing
Caton, video jitter situation, user experience effect are poor.
Therefore, a technical problem that needs to be urgently solved by technical personnel in the field at present is exactly: in network video itself
Timestamp is not accurate enough, when leading to that frame period is inconsistent between two frame videos, how normal play network video the problem of.
Summary of the invention
In view of the above problems, it proposes the embodiment of the present invention and overcomes the above problem or at least partly in order to provide one kind
A kind of network video playback method and a kind of corresponding network video playing device to solve the above problems.
To solve the above-mentioned problems, the embodiment of the invention discloses a kind of network video playback method, the method applications
In view networking, comprising:
Line up middle reading video frame from video cache；
The frame period between the video frame is acquired in real time, and analysis obtains playing the dormancy time of the video frame；
Extract the video cache line up in video frame number, and the video frame number is compared and analyzed；
If the video frame number is less than minimum threshold, increase the dormancy time by pre-defined rule；
If the video frame number is greater than max-thresholds, reduce the dormancy time by pre-defined rule；
Based on the current dormancy time, the video frame is played.
Preferably, the frame period acquired between the video frame in real time, analysis obtain playing stopping for the video frame
The step of dormancy time, comprising:
The accumulative frame period collected in real time；
When the accumulated quantity of the frame period reaches first threshold, according to being averaged for the frame period being accumulated by
Value, obtains the dormancy time for playing the video frame；
When the accumulated quantity of the frame period reaches first threshold, the frame period being currently accumulated by is emptied,
Restart to add up.
Preferably, the step of accumulative frame period collected in real time, comprising:
If the frame period collected in real time is less than second threshold, the frame period is added up.
Preferably, if the video frame number is less than minimum threshold, increase the dormancy time by pre-defined rule
Step, comprising:
Initialize maximum frame period and minimum frame gap；
Based on the current dormancy time, the maximum frame period and minimum frame gap are updated；
If the video frame number is less than minimum threshold, being averaged based on updated maximum frame period and minimum frame gap
Value, updates the current dormancy time；
Increase the current updated dormancy time by pre-defined rule.
Preferably, if the video frame number is greater than max-thresholds, reduce the dormancy time by pre-defined rule
Step, comprising:
Initialize maximum frame period and minimum frame gap；
Based on the current dormancy time, the maximum frame period and minimum frame gap are updated；
If the video frame number is greater than max-thresholds, being averaged based on updated maximum frame period and minimum frame gap
Value, updates the current dormancy time；
Reduce the current updated dormancy time by pre-defined rule.
Preferably, described based on the current dormancy time, update the step of the maximum frame period and minimum frame gap
Suddenly, comprising:
If maximum frame period is 0, maximum frame period is updated to the current dormancy time；
If minimum frame gap is 0, minimum frame gap is updated to the current dormancy time；
If the current dormancy time is greater than maximum frame period, maximum frame period is updated to the current suspend mode
Time；
If the current dormancy time is less than minimum frame gap, minimum frame gap is updated to the current suspend mode
Time.
Preferably, described based on the current dormancy time, the step of playing the video frame, comprising:
If the current dormancy time is less than third threshold value, the current dormancy time is updated to the third threshold
Value is based on the updated dormancy time, plays the video frame.
The present invention also provides a kind of network video playing device, described device is applied in view networking, comprising:
Video frame read module, for lining up middle reading video frame from video cache；
Frame period acquisition module, for acquiring the frame period between the video frame in real time；
Dormancy time analysis module plays the view for analyzing to obtain based on the collected frame period in real time
The dormancy time of frequency frame；
Video frame number contrast module, for extract the video cache line up in video frame number, and to the video frame
Number compares and analyzes；
Dormancy time update module, if being less than minimum threshold for the video frame number, by described in pre-defined rule increase
Dormancy time；Also,
If being greater than max-thresholds for the video frame number, reduce the dormancy time by pre-defined rule；
Presentation of video frames module plays the video frame based on the current dormancy time.
Preferably, the frame period acquisition module includes:
Accumulated unit, for the frame period between the accumulative video frame collected in real time, when the frame period
When accumulated quantity reaches first threshold, the frame period being currently accumulated by is emptied, restarts to add up.
The dormancy time analysis module, specifically for when the accumulated quantity of the frame period reaches first threshold, root
According to the average value for the frame period being accumulated by, the dormancy time for playing the video frame is obtained.
Preferably, the accumulated unit includes:
General selects subelement, if for the frame period between the video frame be less than second threshold, by the frame period into
Row is accumulative.
The embodiment of the present invention includes following advantages:
The embodiment of the present invention can be analyzed to obtain currently in real time from the frame between the video frame that video cache lines up middle reading
Interval, and middle video frame number is lined up according to caching, analysis obtains dormancy time required for playing video, to solve due to view
Frequency timestamp is not accurate enough, and the problem of Caton and shake occur in video pictures, guarantees that video can be played normally glibly.
Detailed description of the invention
Fig. 1 is a kind of networking schematic diagram of view networking of the invention；
Fig. 2 is a kind of hardware structural diagram of node server of the invention；
Fig. 3 is a kind of hardware structural diagram of access switch of the invention；
Fig. 4 is the hardware structural diagram that a kind of Ethernet association of the invention turns gateway；
Fig. 5 is a kind of step flow chart of network video playback method embodiment one of the invention；
Fig. 6 is a kind of step flow chart of network video playback method embodiment two of the invention；
Fig. 7 is a kind of structural block diagram of network video playing device embodiment of the invention.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real
Applying mode, the present invention is described in further detail.
It is the important milestone of network Development depending on networking, is a real-time network, can be realized HD video real-time Transmission,
Push numerous Internet applications to HD video, high definition is face-to-face.
Real-time high-definition video switching technology is used depending on networking, it can be such as high in a network platform by required service
Clear video conference, Intellectualized monitoring analysis, emergency command, digital broadcast television, delay TV, the Web-based instruction, shows video monitoring
Field live streaming, VOD program request, TV Mail, individual character records (PVR), Intranet (manages) channel by oneself, intelligent video Broadcast Control, information publication
All be incorporated into a system platform etc. services such as tens of kinds of videos, voice, picture, text, communication, data, by TV or
Computer realizes that high-definition quality video plays.
Embodiment in order to enable those skilled in the art to better understand the present invention is introduced to depending on networking below:
Depending on networking, applied portion of techniques is as described below:
Network technology (Network Technology)
Traditional ethernet (Ethernet) is improved depending on the network technology innovation networked, with potential huge on network
Video flow.(Circuit is exchanged different from simple network packet packet switch (Packet Switching) or lattice network
Switching), Streag demand is met using Packet Switching depending on networking technology.Have grouping depending on networking technology to hand over
Flexible, the simple and low price changed, is provided simultaneously with the quality and safety assurance of circuit switching, it is virtually electric to realize the whole network switch type
The seamless connection of road and data format.
Switching technology (Switching Technology)
Two advantages of asynchronous and packet switch that Ethernet is used depending on networking eliminate Ethernet under the premise of complete compatible and lack
It falls into, has the end-to-end seamless connection of the whole network, direct user terminal, directly carrying IP data packet.User data is in network-wide basis
It is not required to any format conversion.It is the more advanced form of Ethernet depending on networking, is a real-time exchange platform, can be realized at present mutually
The whole network large-scale high-definition realtime video transmission that networking cannot achieve pushes numerous network video applications to high Qinghua, unitizes.
Server technology (Server Technology)
It is different from traditional server, its Streaming Media depending on the server technology in networking and unified video platform
Transmission be built upon it is connection-oriented on the basis of, data-handling capacity is unrelated with flow, communication time, single network layer energy
Enough transmitted comprising signaling and data.For voice and video business, handled depending on networking and unified video platform Streaming Media
Complexity many simpler than data processing, efficiency substantially increase hundred times or more than traditional server.
Reservoir technology (Storage Technology)
The ultrahigh speed reservoir technology of unified video platform in order to adapt to the media content of vast capacity and super-flow and
Using state-of-the-art real time operating system, the programme information in server instruction is mapped to specific hard drive space, media
Content is no longer pass through server, and moment is directly delivered to user terminal, and user waits typical time less than 0.2 second.It optimizes
Sector distribution greatly reduces the mechanical movement of hard disc magnetic head tracking, and resource consumption only accounts for the 20% of the internet ad eundem IP, but
The concurrent flow greater than 3 times of traditional disk array is generated, overall efficiency promotes 10 times or more.
Network security technology (Network Security Technology)
Depending on the structural design networked by servicing independent licence system, equipment and the modes such as user data is completely isolated every time
The network security problem that puzzlement internet has thoroughly been eradicated from structure, does not need antivirus applet, firewall generally, has prevented black
The attack of visitor and virus, structural carefree secure network is provided for user.
It services innovative technology (Service Innovation Technology)
Business and transmission are fused together by unified video platform, whether single user, private user or a net
The sum total of network is all only primary automatic connection.User terminal, set-top box or PC are attached directly to unified video platform, obtain rich
The multimedia video service of rich colorful various forms.Unified video platform is traditional to substitute with table schema using " menu type "
Complicated applications programming, considerably less code, which can be used, can be realized complicated application, realize the new business innovation of " endless ".
Networking depending on networking is as described below:
It is a kind of central controlled network structure depending on networking, which can be Tree Network, Star network, ring network etc. class
Type, but centralized control node is needed to control whole network in network on this basis.
As shown in Figure 1, being divided into access net and Metropolitan Area Network (MAN) two parts depending on networking.
The equipment of access mesh portions can be mainly divided into 3 classes: node server, access switch, terminal (including various machines
Top box, encoding board, memory etc.).Node server is connected with access switch, and access switch can be with multiple terminal phases
Even, and it can connect Ethernet.
Wherein, node server is the node that centralized control functions are played in access net, can control access switch and terminal.
Node server can directly be connected with access switch, can also directly be connected with terminal.
Similar, the equipment of metropolitan area mesh portions can also be divided into 3 classes: metropolitan area server, node switch, node serve
Device.Metropolitan area server is connected with node switch, and node switch can be connected with multiple node servers.
Wherein, node server is the node server for accessing mesh portions, i.e. node server had both belonged to access wet end
Point, and belong to metropolitan area mesh portions.
Metropolitan area server is the node that centralized control functions are played in Metropolitan Area Network (MAN), can control node switch and node serve
Device.Metropolitan area server can be directly connected to node switch, can also be directly connected to node server.
It can be seen that be entirely a kind of central controlled network structure of layering depending on networking network, and node server and metropolitan area
The network controlled under server can be the various structures such as tree-shaped, star-like, cyclic annular.
Visually claim, access mesh portions can form unified video platform (part in virtual coil), and multiple unified videos are flat
Platform can form view networking；Each unified video platform can be interconnected by metropolitan area and wide area depending on networking.
Classify depending on networked devices
1.1 embodiment of the present invention can be mainly divided into 3 classes: server depending on the equipment in networking, interchanger (including ether
Net gateway), terminal (including various set-top boxes, encoding board, memory etc.).Depending on networking can be divided on the whole Metropolitan Area Network (MAN) (or
National net, World Wide Web etc.) and access net.
1.2 equipment for wherein accessing mesh portions can be mainly divided into 3 classes: node server, access switch (including ether
Net gateway), terminal (including various set-top boxes, encoding board, memory etc.).
The specific hardware structure of each access network equipment are as follows:
Node server:
As shown in Fig. 2, mainly including Network Interface Module 201, switching engine module 202, CPU module 203, disk array
Module 204；
Wherein, Network Interface Module 201, the Bao Jun that CPU module 203, disk array module 204 are come in enter switching engine
Module 202；Switching engine module 202 look into the operation of address table 205 to the packet come in, to obtain the navigation information of packet；
And the packet is stored according to the navigation information of packet the queue of corresponding pack buffer 206；If the queue of pack buffer 206 is close
It is full, then it abandons；All pack buffer queues of 202 poll of switching engine mould, are forwarded: 1) port if meeting the following conditions
It is less than to send caching；2) the queue package counting facility is greater than zero.Disk array module 204 mainly realizes the control to hard disk, including
The operation such as initialization, read-write to hard disk；CPU module 203 is mainly responsible between access switch, terminal (not shown)
Protocol processes, to address table 205 (including descending protocol packet address table, uplink protocol package address table, data packet addressed table)
Configuration, and, the configuration to disk array module 204.
Access switch:
As shown in figure 3, mainly including Network Interface Module (downstream network interface module 301, uplink network interface module
302), switching engine module 303 and CPU module 304；
Wherein, the packet (upstream data) that downstream network interface module 301 is come in enters packet detection module 305；Packet detection mould
Whether mesh way address (DA), source address (SA), type of data packet and the packet length of the detection packet of block 305 meet the requirements, if met,
It then distributes corresponding flow identifier (stream-id), and enters switching engine module 303, otherwise abandon；Uplink network interface mould
The packet (downlink data) that block 302 is come in enters switching engine module 303；The data packet that CPU module 204 is come in enters switching engine
Module 303；Switching engine module 303 look into the operation of address table 306 to the packet come in, to obtain the navigation information of packet；
If the packet into switching engine module 303 is that downstream network interface is gone toward uplink network interface, in conjunction with flow identifier
(stream-id) packet is stored in the queue of corresponding pack buffer 307；If the queue of the pack buffer 307 is close full,
It abandons；If the packet into switching engine module 303 is not that downstream network interface is gone toward uplink network interface, according to packet
Navigation information is stored in the data packet queue of corresponding pack buffer 307；If the queue of the pack buffer 307 is close full,
Then abandon.
All pack buffer queues of 303 poll of switching engine module, are divided to two kinds of situations in embodiments of the present invention:
If the queue is that downstream network interface is gone toward uplink network interface, meets the following conditions and be forwarded: 1)
It is less than that the port sends caching；2) the queue package counting facility is greater than zero；3) token that rate control module generates is obtained；
If the queue is not that downstream network interface is gone toward uplink network interface, meets the following conditions and is forwarded:
1) it is less than to send caching for the port；2) the queue package counting facility is greater than zero.
Rate control module 208 is configured by CPU module 204, to all downlink networks in programmable interval
Interface generates token toward the pack buffer queue that uplink network interface is gone, to control the code rate of forwarded upstream.
CPU module 304 is mainly responsible for the protocol processes between node server, the configuration to address table 306, and,
Configuration to rate control module 308.
Ethernet association turns gateway:
As shown in figure 4, mainly including Network Interface Module (downstream network interface module 401, uplink network interface module
402), switching engine module 403, CPU module 404, packet detection module 405, rate control module 408, address table 406, Bao Huan
Storage 407 and MAC adding module 409, MAC removing module 410.
Wherein, the data packet that downstream network interface module 401 is come in enters packet detection module 405；Packet detection module 405 is examined
Ethernet mac DA, ethernet mac SA, Ethernet length or frame type, the view networking mesh way address of measured data packet
DA, whether meet the requirements depending on networking source address SA, depending on networking data Packet type and packet length, corresponding stream is distributed if meeting
Identifier (stream-id)；Then, MAC DA, MAC SA, length or frame type are subtracted by MAC removing module 410
(2byte), and enter corresponding receive and cache, otherwise abandon；
Downstream network interface module 401 detects the transmission caching of the port, according to the view of packet networking mesh if there is Bao Ze
Address D A knows the ethernet mac DA of corresponding terminal, adds the ethernet mac DA of terminal, Ethernet assists the MAC for turning gateway
SA, Ethernet length or frame type, and send.
The function that Ethernet association turns other modules in gateway is similar with access switch.
Terminal:
It mainly include Network Interface Module, Service Processing Module and CPU module；For example, set-top box mainly connects including network
Mouth mold block, video/audio encoding and decoding engine modules, CPU module；Encoding board mainly includes Network Interface Module, video encoding engine
Module, CPU module；Memory mainly includes Network Interface Module, CPU module and disk array module.
The equipment of 1.3 metropolitan area mesh portions can be mainly divided into 2 classes: node server, node switch, metropolitan area server.
Wherein, node switch mainly includes Network Interface Module, switching engine module and CPU module；Metropolitan area server mainly includes
Network Interface Module, switching engine module and CPU module are constituted.
2, networking data package definition is regarded
2.1 access network data package definitions
Access net data packet mainly include following sections: destination address (DA), source address (SA), reserve bytes,
payload(PDU)、CRC。
As shown in the table, the data packet for accessing net mainly includes following sections:
Wherein:
Destination address (DA) is made of 8 bytes (byte), and first character section indicates type (such as the various associations of data packet
Discuss packet, multicast packet, unicast packet etc.), be up to 256 kinds of possibility, the second byte to the 6th byte is metropolitan area net address,
Seven, the 8th bytes are access net address；
Source address (SA) is also to be made of 8 bytes (byte), is defined identical as destination address (DA)；
Reserve bytes are made of 2 bytes；
The part payload has different length according to the type of different datagrams, is if it is various protocol packages
64 bytes are 32+1024=1056 bytes if it is single group unicast packets words, are not restricted to above 2 kinds certainly；
CRC is made of 4 bytes, and calculation method follows the Ethernet CRC algorithm of standard.
2.2 Metropolitan Area Network (MAN) packet definitions
The topology of Metropolitan Area Network (MAN) is pattern, may there is 2 kinds, connection even of more than two kinds, i.e. node switching between two equipment
It can all can exceed that 2 kinds between machine and node server, node switch and node switch, node switch and node server
Connection.But the metropolitan area net address of metropolitan area network equipment is uniquely, to close to accurately describe the connection between metropolitan area network equipment
System, introduces parameter in embodiments of the present invention: label, uniquely to describe a metropolitan area network equipment.
(Multi-Protocol Label Switch, multiprotocol label are handed over by the definition of label and MPLS in this specification
Change) label definition it is similar, it is assumed that between equipment A and equipment B there are two connection, then data packet from equipment A to equipment B just
There are 2 labels, data packet also there are 2 labels from equipment B to equipment A.Label is divided into label, outgoing label, it is assumed that data packet enters
The label (entering label) of equipment A is 0x0000, and the label (outgoing label) when this data packet leaves equipment A may reform into
0x0001.The networking process of Metropolitan Area Network (MAN) is to enter network process under centralized control, also means that address distribution, the label of Metropolitan Area Network (MAN)
Distribution be all to be dominated by metropolitan area server, node switch, node server be all passively execute, this point with
The label distribution of MPLS is different, and the distribution of the label of MPLS is the result that interchanger, server are negotiated mutually.
As shown in the table, the data packet of Metropolitan Area Network (MAN) mainly includes following sections:
That is destination address (DA), source address (SA), reserve bytes (Reserved), label, payload (PDU), CRC.Its
In, the format of label, which can refer to, such as gives a definition: label is 32bit, wherein high 16bit retains, only with low 16bit, its position
Set is between the reserve bytes and payload of data packet.
Based on the above-mentioned characteristic of view networking, one of the core concepts of the embodiments of the present invention is proposed, it then follows regard the association of networking
View currently lines up the video frame of middle reading by acquiring in real time depending on networked terminals when playing network video from video cache
Frame period, and according to caching line up middle video frame number number, analysis obtain current video frame play required for dormancy time.
Referring to Fig. 5, a kind of step flow chart of network video playback method embodiment one of the invention, this method are shown
It can be applied in view networking, can specifically include following steps:
Step 501, line up middle reading video frame from video cache.
After receiving video data depending on networked terminals, it is desirable to when playing the video data, need from frequency caching line up in one
Video frame is read to frame frame, video frame is then played according to the scheduled time of having a rest.
Step 502, the frame period between the video frame is acquired in real time, and analysis obtains playing the dormancy time of video frame.
The difference of stamp and previous frame timestamp between the interframe currently collected is divided into when the current frame.
In a preferred example of an embodiment of the present invention, the step 502 can specifically include:
Sub-step 11 carries out the frame period tired if the frame period collected in real time is less than second threshold
Meter.
Since video frame time stabs inaccuracy, the frame period that may cause video frame is excessive.Excessive frame period will lead to
Video playing is not smooth, so only adding up the frame period in range of normal value here for excessive frame period without accumulative.
Sub-step 12, when the accumulated quantity of the frame period reaches first threshold, according to the interframe being accumulated by
Every average value, obtain play video frame dormancy time.
Sub-step 13, when the accumulated quantity of the frame period reaches first threshold, the frame that will currently be accumulated by
Interval empties, and restarts to add up.
It should be noted that current dormancy time is updated to these frames after having added up the frame period of predetermined quantity
Then the average value at interval adds up real-time frame period data by identical method again again, when obtaining suspend mode new in real time
Between.
It in a preferred example of an embodiment of the present invention, can be by current institute to make the more accurate of the frame period
The render time that frame period subtracts previous frame video is stated, obtained from the frame period according to the render time for subtracting previous frame video
Dormancy time also can be more accurate.
Step 503, extract the video cache line up in video frame number, and the video frame number is compared point
Analysis.
Video cache line up in video frame number variation, the speed of presentation of video frames can be reflected:
When by current dormancy time to play video frame, video cache line up in video frame number be gradually reduced, then
Illustrate that current dormancy time is too small (too short), needs to increase；
Video frame number in video cache is lined up gradually increases, then illustrates that current dormancy time is excessive (too long), needs
Reduce.
According to above-mentioned principle, can by observe video cache line up in video frame number variation, to dynamically adjust
The dormancy time needed when presentation of video frames solves the problems, such as that Caton and shake, specific implementation method occur in video pictures with this
It is as follows:
Step 504, if the video frame number is less than minimum threshold, increase the dormancy time by pre-defined rule；
In a preferred example of an embodiment of the present invention, the step 504 can specifically include:
Sub-step 21 initializes maximum frame period and minimum frame gap；
The maximum frame period is initialized with minimum frame gap, is to weigh on current hibernation time basis
The new dormancy time updated next time.
Sub-step 22 updates the maximum frame period and minimum frame gap based on the current dormancy time；
In a preferred example of an embodiment of the present invention, the maximum frame period and minimum are updated in the sub-step 22
The rule of frame period can be with are as follows:
If maximum frame period is 0, maximum frame period is updated to the current dormancy time；
If minimum frame gap is 0, minimum frame gap is updated to the current dormancy time；
If the current dormancy time is greater than maximum frame period, maximum frame period is updated to the current suspend mode
Time；
If the current dormancy time is less than minimum frame gap, minimum frame gap is updated to the current suspend mode
Time.
Sub-step 23, if the video frame number is less than minimum threshold, based on updated maximum frame period and minimum interframe
Every average value, update the current dormancy time.
The updated dormancy time in the sub-step 23 can be greater than the maximum frame period and minimum frame gap
Average value.:
Sub-step 24 increases the current updated dormancy time by pre-defined rule.
It is described to increase the current updated dormancy time by pre-defined rule, can increase 1ms or 2ms or other
Reasonably numerical value.
Step 505, if the video frame number is greater than max-thresholds, reduce the dormancy time by pre-defined rule；
In a preferred example of an embodiment of the present invention, the step 505 can specifically include:
Sub-step 31 initializes maximum frame period and minimum frame gap；
The maximum frame period is initialized with minimum frame gap, is to weigh on current hibernation time basis
The new dormancy time updated next time.
Sub-step 32 updates the maximum frame period and minimum frame gap based on the current dormancy time.
In a preferred example of an embodiment of the present invention, the maximum frame period and minimum are updated in the sub-step 32
The rule of frame period can be with are as follows:
If maximum frame period is 0, maximum frame period is updated to the current dormancy time；
If minimum frame gap is 0, minimum frame gap is updated to the current dormancy time；
If the current dormancy time is greater than maximum frame period, maximum frame period is updated to the current suspend mode
Time；
If the current dormancy time is less than minimum frame gap, minimum frame gap is updated to the current suspend mode
Time.
Sub-step 33, if the video frame number is greater than max-thresholds, based on updated maximum frame period and minimum interframe
Every average value, update the current dormancy time.
The updated dormancy time in the sub-step 33 can be less than the maximum frame period and minimum interframe
Every average value.
Sub-step 34 reduces the current updated dormancy time by pre-defined rule.
It is described to reduce the current updated dormancy time by pre-defined rule, can with subtract 1ms or 2ms, Huo Zheqi
His reasonably numerical value.
Stop it should be noted that if the video frame number between max-thresholds and minimum threshold, then keeps current
It sleeps the time.
Step 506, based on the current dormancy time, video frame is played.
In a preferred example of an embodiment of the present invention, the step 506 can specifically include:
If the current dormancy time is less than third threshold value, the current dormancy time is updated to the third threshold
Value is based on the updated dormancy time, plays video frame.
Referring to Fig. 6, a kind of step flow chart of network video playback method embodiment two of the invention, this method are shown
It can be applied in view networking, can specifically include following steps:
Step 601, line up middle reading video frame from video cache；
Step 602, whether the frame period a between the video frame that judgement currently collects is less than 150ms, if turning
In next step, if it is not, going to step 604；
Step 603, the frame period a for subtracting previous frame Video Rendering time b is added up, counter i adds 1 (meter
0) number device i initial value is；If counter 1 is 20, the current dormancy time is updated to all accumulated results (i.e. a-b)
Average value, counter i are initially 0, and accumulated result empties；
Step 604, maximum frame period and minimum frame gap are initially 0；
Step 605, based on the current dormancy time, the maximum frame period and minimum frame gap are updated:
If maximum frame period is 0, maximum frame period is updated to the current dormancy time；
If minimum frame gap is 0, minimum frame gap is updated to the current dormancy time；
If the current dormancy time is greater than maximum frame period, maximum frame period is updated to the current suspend mode
Time；
If the current dormancy time is less than minimum frame gap, minimum frame gap is updated to the current suspend mode
Time.
Step 606, extract the video cache line up in video frame number, and the video frame number is compared point
Analysis；If the video frame number less than 4, turns in next step；If the video frame number is greater than 6,609 are gone to step；Otherwise 611 are gone to step；
Step 607, if current maximum frame period is not 0, current minimum frame gap is not 0, and maximum frame period and minimum
Frame period is unequal, then the average value based on updated maximum frame period and minimum frame gap updates the current suspend mode
Time.
Specifically, updated presently described dormancy time=(maximum frame period+minimum frame gap)/2+ (maximum interframe
Every+minimum frame gap) %2；It should be noted that (maximum frame period+minimum frame gap)/2 obtain be quotient integer
Part；What (maximum frame period+minimum frame gap) %2 was obtained is the complementing part of quotient；Such as 5/2+5%2=3.It is described
On the basis of the purpose of dormancy time update method is the average value in maximum frame period and minimum frame gap to dormancy time into
Row is appropriate to be increased.
Step 608, the current hibernation time is increased into 1ms；
Step 609, if current maximum frame period is not 0, current minimum frame gap is not 0, and maximum frame period and minimum
Frame period is unequal, then the average value based on updated maximum frame period and minimum frame gap updates the current suspend mode
Time.
Specifically, updated presently described dormancy time=(maximum frame period+minimum frame gap)/2；It needs to illustrate
It is that (maximum frame period+minimum frame gap)/2 obtained is the integer part of quotient；Such as 5/2=2.The dormancy time
The purpose of update method suitably subtracts dormancy time on the basis of being the average value in maximum frame period and minimum frame gap
It is small.
Step 610, the current hibernation time is subtracted into 1ms；
Step 611, if presently described dormancy time is less than 10, presently described dormancy time is updated to 10；
Step 612, based on the current dormancy time, video frame is played.
It should be noted that for simple description, therefore, it is stated as a series of action groups for embodiment of the method
It closes, but those skilled in the art should understand that, embodiment of that present invention are not limited by the describe sequence of actions, because according to
According to the embodiment of the present invention, some steps may be performed in other sequences or simultaneously.Secondly, those skilled in the art also should
Know, the embodiments described in the specification are all preferred embodiments, and the related movement not necessarily present invention is implemented
Necessary to example.
Referring to Fig. 7, a kind of structural block diagram of network video playing device embodiment of the invention is shown, which can be with
Applied in view networking, following module can specifically include:
Video frame read module 701, for lining up middle reading video frame from video cache；
Frame period acquisition module 702, for acquiring the frame period between the video frame in real time；
In a preferred example of an embodiment of the present invention, the frame period acquisition module 702 includes:
Accumulated unit, for the accumulative frame period collected in real time, when the accumulated quantity of the frame period reaches
When first threshold, the frame period being currently accumulated by is emptied, restarts to add up.
In a preferred example of an embodiment of the present invention, the accumulated unit may include:
General selects subelement, if for the frame period between the video frame be less than second threshold, by the frame period into
Row is accumulative.
Dormancy time analysis module 703, for analyzing to obtain broadcasting view based on the collected frame period in real time
The dormancy time of frequency frame；
Preferably, the dormancy time analysis module 703 reaches first threshold for the accumulated quantity when the frame period
When, according to the average value for the frame period being accumulated by, obtain the dormancy time for playing video frame.
Video frame number contrast module 704, for extract the video cache line up in video frame number, and to the video
Frame number compares and analyzes；
Dormancy time update module 705 increases institute by pre-defined rule if being less than minimum threshold for the video frame number
State dormancy time；Also,
If being greater than max-thresholds for the video frame number, reduce the dormancy time by pre-defined rule.
In a preferred example of an embodiment of the present invention, the dormancy time update module 705 can specifically include:
Frame period initialization unit, for initializing maximum frame period and minimum frame gap；
Frame period updating unit, for updating the maximum frame period and minimum frame based on the current dormancy time
Interval；
The rule for updating the maximum frame period and minimum frame gap is specifically as follows:
If maximum frame period is 0, maximum frame period is updated to the current dormancy time；
If minimum frame gap is 0, minimum frame gap is updated to the current dormancy time；
If the current dormancy time is greater than maximum frame period, maximum frame period is updated to the current suspend mode
Time；
If the current dormancy time is less than minimum frame gap, minimum frame gap is updated to the current suspend mode
Time.
It should be noted that the dormancy time update module 705, can be also used for based on updated maximum frame period
With the average value of minimum frame gap, the current dormancy time is updated.
Presentation of video frames module 706 plays video frame based on the current dormancy time.
For device embodiment, since it is basically similar to the method embodiment, related so being described relatively simple
Place illustrates referring to the part of embodiment of the method.
All the embodiments in this specification are described in a progressive manner, the highlights of each of the examples are with
The difference of other embodiments, the same or similar parts between the embodiments can be referred to each other.
It should be understood by those skilled in the art that, the embodiment of the embodiment of the present invention can provide as method, apparatus or calculate
Machine program product.Therefore, the embodiment of the present invention can be used complete hardware embodiment, complete software embodiment or combine software and
The form of the embodiment of hardware aspect.Moreover, the embodiment of the present invention can be used one or more wherein include computer can
With in the computer-usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) of program code
The form of the computer program product of implementation.
The embodiment of the present invention be referring to according to the method for the embodiment of the present invention, terminal device (system) and computer program
The flowchart and/or the block diagram of product describes.It should be understood that flowchart and/or the block diagram can be realized by computer program instructions
In each flow and/or block and flowchart and/or the block diagram in process and/or box combination.It can provide these
Computer program instructions are set to general purpose computer, special purpose computer, Embedded Processor or other programmable data processing terminals
Standby processor is to generate a machine, so that being held by the processor of computer or other programmable data processing terminal devices
Capable instruction generates for realizing in one or more flows of the flowchart and/or one or more blocks of the block diagram
The device of specified function.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing terminal devices
In computer-readable memory operate in a specific manner, so that instruction stored in the computer readable memory generates packet
The manufacture of command device is included, which realizes in one side of one or more flows of the flowchart and/or block diagram
The function of being specified in frame or multiple boxes.
These computer program instructions can also be loaded into computer or other programmable data processing terminal devices, so that
Series of operation steps are executed on computer or other programmable terminal equipments to generate computer implemented processing, thus
The instruction executed on computer or other programmable terminal equipments is provided for realizing in one or more flows of the flowchart
And/or in one or more blocks of the block diagram specify function the step of.
Although the preferred embodiment of the embodiment of the present invention has been described, once a person skilled in the art knows bases
This creative concept, then additional changes and modifications can be made to these embodiments.So the following claims are intended to be interpreted as
Including preferred embodiment and fall into all change and modification of range of embodiment of the invention.
Finally, it is to be noted that, herein, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant meaning
Covering non-exclusive inclusion, so that process, method, article or terminal device including a series of elements not only wrap
Those elements are included, but also including other elements that are not explicitly listed, or further includes for this process, method, article
Or the element that terminal device is intrinsic.In the absence of more restrictions, being wanted by what sentence "including a ..." limited
Element, it is not excluded that there is also other identical elements in process, method, article or the terminal device for including the element.
Above to a kind of network video playback method provided by the present invention and a kind of network video playing device, carry out
It is discussed in detail, used herein a specific example illustrates the principle and implementation of the invention, above embodiments
Illustrate to be merely used to help understand method and its core concept of the invention；At the same time, for those skilled in the art, according to
According to thought of the invention, there will be changes in the specific implementation manner and application range, in conclusion the content of the present specification
It should not be construed as limiting the invention.
Claims (9)
1. a kind of network video playback method, which is characterized in that the method is applied in view networking, comprising:
Line up middle reading video frame from video cache；
The frame period between the video frame is acquired in real time, and analysis obtains playing the dormancy time of the video frame；
Extract the video cache line up in video frame number, and the video frame number is compared and analyzed；
If the video frame number is less than minimum threshold, increase the dormancy time by pre-defined rule；Wherein, if the video frame
The step of number is less than minimum threshold, then increases the dormancy time by pre-defined rule, comprising:
Initialize maximum frame period and minimum frame gap；
Based on the current dormancy time, the maximum frame period and minimum frame gap are updated；
If the video frame number is less than minimum threshold, based on the average value of updated maximum frame period and minimum frame gap, more
The new current dormancy time；
Increase the current updated dormancy time by pre-defined rule；
If the video frame number is greater than max-thresholds, reduce the dormancy time by pre-defined rule；
Dormancy time after reducing based on the dormancy time after the increase by pre-defined rule or by pre-defined rule, plays the view
Frequency frame.
2. the method according to claim 1, wherein the frame period acquired between the video frame in real time,
Analysis obtains the step of playing the dormancy time of the video frame, comprising:
The accumulative frame period collected in real time；
When the accumulated quantity of the frame period reaches first threshold, according to the average value for the frame period being accumulated by, obtain
To the dormancy time for playing the video frame；
It, will when the accumulated quantity of the frame period reaches first threshold and obtains the dormancy time for playing the video frame
The frame period being currently accumulated by empties, and restarts to add up.
3. according to the method described in claim 2, it is characterized in that, the step of the accumulative frame period collected in real time
Suddenly, comprising:
If the frame period collected in real time is less than second threshold, the frame period is added up.
4. if the method according to claim 1, wherein the video frame number is pressed greater than max-thresholds
Pre-defined rule reduces the step of dormancy time, comprising:
Initialize maximum frame period and minimum frame gap；
Based on the current dormancy time, the maximum frame period and minimum frame gap are updated；
If the video frame number is greater than max-thresholds, based on the average value of updated maximum frame period and minimum frame gap, more
The new current dormancy time；
Reduce the current updated dormancy time by pre-defined rule.
5. according to the method described in claim 4, it is characterized in that, described based on the current dormancy time, described in update
The step of maximum frame period and minimum frame gap, comprising:
If maximum frame period is 0, maximum frame period is updated to the current dormancy time；
If minimum frame gap is 0, minimum frame gap is updated to the current dormancy time；
If the current dormancy time is greater than maximum frame period, when maximum frame period is updated to the current suspend mode
Between；
If the current dormancy time is less than minimum frame gap, when minimum frame gap is updated to the current suspend mode
Between.
6. the method according to claim 1, wherein described based on the current dormancy time, described in broadcasting
The step of video frame, comprising:
If the current dormancy time is less than third threshold value, the current dormancy time is updated to the third threshold value,
Based on the updated dormancy time, the video frame is played.
7. a kind of network video playing device, which is characterized in that described device is applied in view networking, comprising:
Video frame read module, for lining up middle reading video frame from video cache；
Frame period acquisition module, for acquiring the frame period between the video frame in real time；
Dormancy time analysis module plays the video frame for analyzing to obtain based on the collected frame period in real time
Dormancy time；
Video frame number contrast module, for extract the video cache line up in video frame number, and to the video frame number into
Row comparative analysis；
Dormancy time update module increases the suspend mode by pre-defined rule if being less than minimum threshold for the video frame number
Time；Also,
If being greater than max-thresholds for the video frame number, reduce the dormancy time by pre-defined rule；
Wherein, if the video frame number be less than minimum threshold, by pre-defined rule increase the dormancy time the step of, comprising:
Initialize maximum frame period and minimum frame gap；
Based on the current dormancy time, the maximum frame period and minimum frame gap are updated；
If the video frame number is less than minimum threshold, based on the average value of updated maximum frame period and minimum frame gap, more
The new current dormancy time；
Increase the current updated dormancy time by pre-defined rule；
Presentation of video frames module, the suspend mode after reducing based on the dormancy time after the increase by pre-defined rule or by pre-defined rule
Time plays the video frame.
8. device according to claim 7, which is characterized in that the frame period acquisition module includes:
Accumulated unit, for the frame period between the accumulative video frame collected in real time, when adding up for the frame period
When quantity reaches first threshold and obtains the dormancy time for playing the video frame, the interframe that will currently be accumulated by
Every emptying, restart to add up；
The dormancy time analysis module, specifically for when the accumulated quantity of the frame period reaches first threshold, according to tired
The average value for counting the obtained frame period, obtains the dormancy time for playing the video frame.
9. device according to claim 8, which is characterized in that the accumulated unit includes:
Subelement is screened, if be less than second threshold for the frame period between the video frame, the frame period is carried out tired
Meter.
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| CN110536153A (en) * | 2018-05-23 | 2019-12-03 | 视联动力信息技术股份有限公司 | A kind of playback method and server of video data |
| CN110661992A (en) * | 2018-06-29 | 2020-01-07 | 视联动力信息技术股份有限公司 | Data processing method and device |
| CN111083162B (en) * | 2019-12-30 | 2022-08-23 | 广州酷狗计算机科技有限公司 | Multimedia stream pause detection method and device |
| CN115278366B (en) * | 2022-09-28 | 2023-03-24 | 天津卓朗昆仑云软件技术有限公司 | Data processing method and device for video stream of virtual machine and electronic equipment |
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