CN102185835A - Real-time network signal playing method and device - Google Patents
Real-time network signal playing method and device Download PDFInfo
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- CN102185835A CN102185835A CN2011100938136A CN201110093813A CN102185835A CN 102185835 A CN102185835 A CN 102185835A CN 2011100938136 A CN2011100938136 A CN 2011100938136A CN 201110093813 A CN201110093813 A CN 201110093813A CN 102185835 A CN102185835 A CN 102185835A
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Abstract
The invention discloses a real-time network signal playing method and a real-time network signal playing device. The method comprises the following steps of: detecting the frame number n of network signal stream data stored in a buffer, and when the stored frame number n is equal to a preset value, playing network signals with normal frequency M; and continuing detecting the frame number n stored in the buffer, and dynamically regulating a playing frame rate according to the range of the frame number n. By the method and the device, the problems of image jitter and pause caused by network transmission instability in the playing of the real-time network signals can be effectively solved, and the network signal playing effects can be bettered.
Description
Technical field
The present invention relates to the network signal play-back technology, relate in particular to a kind of real-time network signal player method and device.
Background technology
At present, the application of network signal transmission is very universal, as Web TV, network film, network signal monitoring etc.Network has brought convenience for life, but the unsteadiness of Network Transmission has brought a difficult problem for the broadcast of real-time network signal flow.The transmission of real-time network signal flow is Network Based, and its principle is to receive the network signal flow data that sends from network, and decoding is play then.
The real-time network signal is play and can be realized the broadcast of telecommunication network signal, but the instability of Network Transmission has been brought challenge to the broadcast that network signal flows.The network signal data can not in time be transferred to playback equipment, thereby can't normal play, and the consequence of bringing is exactly the network signal flating of playing even pauses.Therefore, effectively solve the problem that causes flating when playing the real-time network signal flow owing to the Network Transmission instability, improve the network signal result of broadcast, have huge actual application value.
The signal frame buffer technology is a kind of real-time network signal flow play-back technology commonly used, its principle is after beginning to receive the network signal frame that Network Transmission comes, playing network signal at once not, and the network signal of first buffer-stored a period of time, and then beginning normal play.The advantage of doing like this is, when network transfer speeds reduces, the demonstration of pause can't occur playing at once, because also have a plurality of signal frames to play in the Buffer Pool.This method can be alleviated the unstable and bad problem of network signal result of broadcast that causes of Network Transmission to a certain extent.
But because the restriction of buffer size, the signal frame quantity of buffering is limited, reaches the network signal stream of 90 minutes even 120 minutes for a minister.In long reproduction time section, the time that network transfer speeds reduces correspondingly also can increase, and the signal frame of buffering just is exhausted before network signal finishes playing probably.And be exhausted when the signal frame of Buffer Pool, when occurring the Network Transmission problem again, network signal is play and will be occurred the phenomenon of shaking, pausing once more.Therefore, also there is defective in existing signal frame buffer technology.
Summary of the invention
Because the Network Transmission instability causes the problem of flating, pause, improve the network signal result of broadcast when playing the real-time network signal flow, the invention provides a kind of real-time network signal player method, comprising in order to solve:
Detect the frame number n of the network signal flow data of buffer stores, when the frame number n of described storage equals preset value, with normal frame per second M playing network signal; Continue to detect the frame number n of buffer stores, and dynamically adjust the frame per second of broadcast according to the scope of living in of frame number n.
Correspondingly, the present invention also provides a kind of real-time network signal playing device, comprising:
Detecting unit is used to detect the frame number n of buffering area stored;
With the broadcast unit that described detecting unit links to each other, be used for the playing network signal;
With described detecting unit and the adjustment unit that described broadcast unit links to each other respectively, be used for dynamically adjusting the frame per second of the broadcast of described broadcast unit according to the scope of living in of frame number n.
Implement the present invention, have following beneficial effect:
Adopt the present invention, the frame number of the network signal stream by continuous detection buffer stores, controls playing frame per second in real time.When Network Transmission was unstable, the speed of network signal flow data input block reduced, and the storage frame number n in the buffering area reduces, in view of the above, by reducing play frame rate, promptly control the output speed of buffering area, storage frame number n in the buffering area is among the dynamic equilibrium, is unlikely to totally.So, as long as also store the network signal flow data in the buffering area, just can solve the problem of flating, pause, thereby improve the network signal result of broadcast.
Description of drawings
Fig. 1 is the flow chart of a kind of real-time network signal of the present invention player method;
Fig. 2 is the flow chart of an embodiment of a kind of real-time network signal of the present invention player method;
Fig. 3 is the schematic diagram of a kind of real-time network signal of the present invention playing device.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is the flow chart of a kind of real-time network signal of the present invention player method.
S101: detect the frame number n of the network signal flow data of buffer stores, when the frame number n of described storage equals preset value, with normal frame per second M playing network signal.
Need to prove that system can constantly receive the network signal packet, and convert the network signal flow data to through decoder decode.Technical solution of the present invention adopts buffer technology, after decoder is with the network signal decoded packet data, is not playing network signal at once.But buffering area receives described network signal flow data, and is stored in the buffering area, and buffering a period of time plays again earlier.And continue receiving data stream while playing.And then reach playing network signal, receiving data stream and carry out synchronously, and do not influence the quality that network signal is play.Therefore, the network signal stream frame number that is stored in the described buffering area needs a limit value, and the frame number of the described buffer stores network signal flow data of technical solution of the present invention is a preset value.In the time of described buffering area stored network signal stream, detect the storage frame number n of buffering area inside according to the size of buffer stores data, when frame number n reaches described preset value, beginning playing network signal.And, be that described normal frame per second is the preset value of default with normal frame per second M playing network signal.Preferably, can make normal frame per second M be: 25 frame/second≤M≤30 frame/seconds.
S102: continue to detect the frame number n of buffer stores, and dynamically adjust the frame per second of broadcast according to the scope of living in of frame number n.
Need to prove that in the process that network signal is play, buffering area can be deleted the network signal flow data of having play, exchange Blank Space for this and continue the follow-up network signal data flow of storage.Simultaneously, system can constantly receive network of network signal data bag, and its decoding is converted to the Blank Space that the network signal flow data transfers to buffering area stores.But because the unsteadiness of network, the speed of transfer of data tends to faster or slower, so the frame number n of buffer stores also can change to some extent, and the technology of the present invention is dynamically adjusted the frame per second of broadcast according to described frame number n.Purpose is to coordinate mutually for the speed of speed that makes broadcast and transfer of data, allows the frame number n of buffer stores be among the dynamic equilibrium, and so, network signal just can have been play glibly.
Fig. 2 is the flow chart of an embodiment of a kind of real-time network signal of the present invention player method, comprising:
S201: detect the frame number n of the network signal flow data of buffer stores, when the frame number n of described storage equals preset value, with normal frame per second M playing network signal.
S202: described preset value is the maximum frame number N of described buffer stores network signal flow data.
Need to prove,, promptly store enough buffered frame, resist because of the smooth frame that does not exhaust in the buffering area of network in a period of time for broadcast in order to strengthen network signal anti-jamming capacity in playing process.Described preset value is the maximum frame number N of described buffer stores network signal flow data, when the frame number n of described storage equals described maximum frame number N, begins to play.But described maximum frame number N is unsuitable excessive, also should not be too little.For example for a network signal of 120 minutes, if buffer-stored just began to play in 30 minutes, will certainly allow spectators' patience wear down totally; If buffer-stored just began in 30 seconds to play, if the transmission of network data flow does not catch up with, the signal frame of buffering just is exhausted before network signal finishes playing probably, will certainly influence the effect of watching.Particularly, described maximum frame number N decides according to the performance of real network transmission quality and playback equipment.
S203: continue to detect the frame number n of buffer stores, and dynamically adjust the frame per second of broadcast according to the scope of living in of frame number n.
S204: when frame number n equals the maximum frame number N of buffer stores network signal flow data, by normal frame per second M playing network signal; As frame number n during less than the maximum frame number N of buffer stores network signal flow data, by frame per second playing network signal less than described frame per second M.
Need to prove that when network was normal, the speed ratio of transfer of data was very fast.Buffering area has just been exported a part of frame, receives follow-up frame at once again and replenishes into.Therefore, when detecting, the frame number n that can detect the network signal flow data of storage equals maximum N.The dynamic equilibrium point of storage frame number n in the buffering area is at described maximum N.At this moment, get final product by normal frame per second broadcast.
But when the network appearance was unusual, the speed of transfer of data also can be influenced.At this moment, the speed of buffering area output has been broken original dynamic equilibrium greater than the speed that input receives, and the storage frame number n value in the buffering area reduces.As the frame number n that receives described network signal flow data during less than the maximum frame number N of buffer stores network signal flow data, by frame per second playing network signal less than described frame per second M.Owing to having reduced frame per second, promptly reduced the speed of output, the speed of buffering area output is coordinated mutually with the speed that input receives, make the interior storage frame number n of buffering area reach the state of dynamic equilibrium once more.But the amplitude that reduces should be greater than 0.25 * M, otherwise can influence viewing effect.
When frame number n is positioned at first preset areas P1 * N≤n＜N, press the frame per second playing network signal of M-K1, wherein 0＜P1＜1,0＜K1≤0.25 * M; When frame number n is positioned at second preset areas P2 * N≤n＜P1 * N, press M-K2 frame per second playing network signal, wherein, 0＜P2＜P1＜1,0＜K1＜K2≤0.25 * M; When frame number n is positioned at m preset areas Pm * N≤n＜Pm-1 * N, press M-Km frame per second playing network signal, wherein m 〉=2,0＜Pm＜Pm-1＜1,0＜K1＜Km≤0.25 * M.
Need to prove, for the speed that further makes buffering area output is coordinated mutually with the speed of input reception, be k preset areas, wherein k 〉=2 with the scope division of living in of frame number n.Along with the minimizing of described frame number n, there are corresponding play frame rate and inbound pacing to be complementary.When frame number n is positioned at m preset areas Pm * N≤n＜Pm-1 * N, press M-Km frame per second playing network signal, wherein m 〉=2,0＜Pm＜Pm-1＜1,0＜K1＜Km≤0.25 * M.Preferably, work as P
1During * N≤n＜N, according to the frame per second playing network signal of M-1 frame per second; Work as P
2* N≤n＜P
1During * N, according to the frame per second playing network signal of M-2 frame per second; Work as P
3* N≤n＜P
2During * N, according to the frame per second playing network signal of M-3 frame per second.
Fig. 3 is the schematic diagram of a kind of real-time network signal of the present invention playing device, comprising:
Detecting unit is used to detect the frame number n of buffering area stored.
With the broadcast unit that described detecting unit links to each other, be used for the playing network signal.
With described detecting unit and the adjustment unit that described broadcast unit links to each other respectively, be used for dynamically adjusting the frame per second of the broadcast of described broadcast unit according to the scope of living in of frame number n.Identical in concrete adjustment mode and the method.
Real-time network signal flow playing device as shown in Figure 3 also comprises:
With the setup unit that described detecting unit links to each other, be used to be provided with the maximum frame number N of described buffer stores network signal flow data.
With the broadcast unit that described detecting unit links to each other, be used for when described detecting unit detects described frame number n and equals described maximum frame number N, with normal frame per second M playing network signal.
Real-time network signal flow playing device as shown in Figure 3, shown in adjustment unit comprise: normal process module and postpone processing module; Described normal process module is used for described frame per second is adjusted into normal frame per second M; Described delay processing module is used for described frame per second is adjusted into frame per second less than described frame per second M.
Shown in postpone processing module and comprise policy module, be used for as frame number n during less than the maximum frame number N of buffer stores network signal flow data, according to the residing preset areas adjustment of frame number n play frame rate.Identical in concrete adjustment mode and the method.
Above-described embodiment of the present invention does not constitute the qualification to protection range of the present invention.Any modification of being done within the spirit and principles in the present invention, be equal to and replace and improvement etc., all should be included within the claim protection range of the present invention.
Claims (8)
1. a real-time network signal player method is characterized in that, comprising:
Detect the frame number n of the network signal flow data of buffer stores, when the frame number n of described storage equals preset value, with normal frame per second M playing network signal;
Continue to detect the frame number n of buffer stores, and dynamically adjust the frame per second of broadcast according to the scope of living in of frame number n.
2. real-time network signal flow player method according to claim 1 is characterized in that:
Described preset value is the maximum frame number N of described buffer stores network signal flow data.
3. real-time network signal flow player method according to claim 1 is characterized in that, describedly dynamically adjusts the step of the frame per second of broadcast according to the value of frame number n, comprising:
When frame number n equals the maximum frame number N of buffer stores network signal flow data, by normal frame per second M playing network signal;
As frame number n during less than the maximum frame number N of buffer stores network signal flow data, by frame per second playing network signal less than described frame per second M.
4. real-time network signal flow player method according to claim 3 is characterized in that, and is described as frame number n during less than the maximum frame number N of buffer stores network signal flow data, and the step by less than the frame per second playing network signal of described frame per second M comprises:
When frame number n is positioned at the first preset areas P
1During * N≤n＜N, press M-K
1Frame per second playing network signal, 0＜P wherein
1＜1,0＜K
1≤ 0.25 * M;
When frame number n is positioned at the second preset areas P
2* N≤n＜P
1During * N, press M-K
2Frame per second playing network signal, wherein, 0＜P
2＜P
1＜1,0＜K
1＜K
2≤ 0.25 * M;
When frame number n is positioned at m preset areas P
m* N≤n＜P
M-1During * N, press M-K
mFrame per second playing network signal, wherein m 〉=2,0＜P
m＜P
M-1＜1,0＜K
1＜K
m≤ 0.25 * M.
5. a real-time network signal playing device is characterized in that, comprising:
Detecting unit is used to detect the frame number n of buffering area stored;
With the broadcast unit that described detecting unit links to each other, be used for the playing network signal;
With described detecting unit and the adjustment unit that described broadcast unit links to each other respectively, be used for dynamically adjusting the frame per second of the broadcast of described broadcast unit according to the scope of living in of frame number n.
6. real-time network signal flow playing device according to claim 5 is characterized in that, also comprises:
With the setup unit that described detecting unit links to each other, be used to be provided with the maximum frame number N of described buffer stores network signal flow data.
7. real-time network signal flow playing device according to claim 5 is characterized in that described adjustment unit comprises: normal process module and delay processing module;
Described normal process module is used for described frame per second is adjusted into normal frame per second M;
Described delay processing module is used for described frame per second is adjusted into frame per second less than described frame per second M.
8. real-time network signal flow playing device according to claim 7, it is characterized in that, described delay processing module comprises policy module, is used for adjusting play frame rate as frame number n during less than the maximum frame number N of buffer stores network signal flow data according to the residing preset areas of frame number n.
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| CN2011100938136A CN102185835A (en) | 2011-04-14 | 2011-04-14 | Real-time network signal playing method and device |
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| CN103841461A (en) * | 2014-03-26 | 2014-06-04 | 联想(北京)有限公司 | Method and device for processing information and electronic equipment |
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| CN104159079A (en) * | 2014-08-13 | 2014-11-19 | 上海航天电子通讯设备研究所 | Image real-time decoding display method |
| CN104683866A (en) * | 2013-11-29 | 2015-06-03 | 成都鼎桥通信技术有限公司 | Playing processing method for received streaming video |
| CN105141943A (en) * | 2015-09-08 | 2015-12-09 | 深圳Tcl数字技术有限公司 | Adjusting method and device for video frame rate |
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| CN112188284A (en) * | 2020-10-23 | 2021-01-05 | 武汉长江通信智联技术有限公司 | Client low-delay smooth playing method based on wireless video monitoring system |
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| CN112911376A (en) * | 2021-02-01 | 2021-06-04 | 华录智达科技股份有限公司 | Playing method based on real-time video playing fluency |
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| CN109168083A (en) * | 2018-10-23 | 2019-01-08 | 青岛海信电器股份有限公司 | A kind of Streaming Media real time playing method and device |
| CN109168083B (en) * | 2018-10-23 | 2021-05-28 | 海信视像科技股份有限公司 | Streaming media real-time playing method and device |
| CN112188284A (en) * | 2020-10-23 | 2021-01-05 | 武汉长江通信智联技术有限公司 | Client low-delay smooth playing method based on wireless video monitoring system |
| CN112911377A (en) * | 2021-02-01 | 2021-06-04 | 华录智达科技股份有限公司 | System and algorithm for adapting video playing and cache |
| CN112911376A (en) * | 2021-02-01 | 2021-06-04 | 华录智达科技股份有限公司 | Playing method based on real-time video playing fluency |
| CN112911377B (en) * | 2021-02-01 | 2022-10-21 | 华录智达科技股份有限公司 | System and algorithm for adapting video playing and cache |
| CN114302230A (en) * | 2021-12-30 | 2022-04-08 | 苏州万店掌网络科技有限公司 | Front-end playing component optimization method, system and storage medium |
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Application publication date: 20110914 |