CN102724584A - Method and device for playing network videos online and smart television - Google Patents
Method and device for playing network videos online and smart television Download PDFInfo
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Abstract
The invention is applicable to the field of network video playing and provides a method and a device for playing network videos online and a smart television. The method for online playing the network videos includes S1, acquiring format of an audio and video file to be played, computing an audio cache space and a video cache space required by cache, and starting receiving the audio and video file; S2, decoding a received part of the audio and video file, storing decoded audio data into the audio cache space and decoded video data into the video cache space; S3, judging whether the audio cache space or video cache space is used up or not, if yes, extracting the decoded data to play from the audio cache space and the video cache space used up. In the method for only playing the network videos, program data can be better buffered to a local internal memory by dynamic buffering adjustment, and buffering can be realized during playing, and frequent pause during playing high-definition programs online is reduced effectively.
Description
Technical field
The invention belongs to Internet video and play the field, relate in particular to a kind of Internet video online playing method, video online playing device and intelligent television.
Background technology
Along with popularizing of intelligent television, increasing domestic consumer buys intelligent television; When using intelligent television to watch TV programme, no longer be confined to the program that TV station pushes, the video frequency program that the user can select some portal websites to release carries out online playing.Yet during the online playing network TV program, because the restriction of bandwidth, the phenomenon that card pauses is play in the frequent appearance when broadcast of some HD videos.
Card can often take place and time because the internal memory restriction can not be opened up very big internal memory and given buffering in intelligent television when the broadcast HD video.Main cause is that the data of transmission in the HD video file unit interval are many, and the network bandwidth is not enough, and perhaps network congestion the time, multimedia decoder obtains the not enough phenomenon that causes audio frequency and video card frequently to occur of playing of documentation when playing.
Summary of the invention
The purpose of the embodiment of the invention is to provide a kind of Internet video online playing method, and the restriction owing to bandwidth when being intended to solve conventional online playing network television program causes playing the problem that card pauses.
The embodiment of the invention is achieved in that a kind of Internet video online playing method, comprises the steps:
S1: obtain the form of treating playing audio-video document, calculate required audio frequency spatial cache and the video cache space of buffer memory, and begin to receive said audio-video document;
S2: the part that the said audio-video document of decoding has received, decoded voice data is put into said audio frequency spatial cache, decoded video data is put into said video cache space;
S3: judge that whether to have one in said audio frequency spatial cache or the said video cache space full; If then said decoded voice data of taking-up and video data are play from said audio frequency spatial cache and said video cache space.
Further, said step S1 comprises the steps:
S11: obtain the said form of treating playing audio-video document;
S12 calculates required audio frequency spatial cache of buffer memory and video cache space size according to the said form of playing audio-video document of treating;
S13: judge whether it is to play or search for the back for the first time to play; If then get into step S14, then get into step S16 if not;
S14: to the preceding data buffering of decoding;
S15: judge further whether the data that cushion before the said decoding reach a frame decoding, if then change said step S2 over to and get into audio/video decoding; If not, then carry out said step S14;
S16 is according to said audio frequency spatial cache and said video cache space size and network speed calculating period of reservation of number;
S17: point out in the program buffering and period of reservation of number, treat that the user arrives the stand-by period, gets into said step S15.
Further, said step S2 comprises the steps:
S21:, open up audio frequency spatial cache and video cache space according to said audio frequency spatial cache that calculates among the said step S12 and said video cache space size;
S22: audio/video decoding;
S23 puts into said audio frequency spatial cache and said video cache space respectively with decoded audio, video data.
Further, said step S3 comprises the steps:
S31: judge whether it is to play or search for the back for the first time to play, if, then get into said step S33, if not, then get into said step S32;
Whether there is one to expire in said audio frequency spatial cache or the said video cache space if S32 judges, then gets into said step S33, if not, then be back to the substep S14 of said step S1;
S33: playing audio-video;
Whether there is one then to get into step S35 in said audio frequency spatial cache and the said video cache space if S34 judges, if not, then is back to said step S33 for empty;
S35: judge whether the audio-video document broadcast finishes; If then this flow process finishes, if not, then be back to the substep S13 of said step S1.
The present invention also aims to provide a kind of video online playing device that adopts above-mentioned Internet video online playing method to realize the Internet video online playing, comprising:
The audio-video document acquisition module is used to obtain the form of treating playing audio-video document, calculates required audio frequency spatial cache and the video cache space of buffer memory, and receives audio-video document;
Cache module is comprising audio frequency spatial cache that is used for buffered audio data and the video cache space that is used for the buffer memory video data;
Decoder module is used for partial decoding of h that the audio-video document that the audio-video document acquisition module receives has been received, and decoded audio, video data is put into corresponding audio spatial cache and video cache space respectively;
Judge module is used to judge whether cache module sound intermediate frequency spatial cache or video cache space be full; In audio frequency spatial cache or video cache space, there is a full playing module of then notifying to begin to play;
Playing module is used for receiving that taking out decoded data from cache module after the play command of judge module plays.
The present invention also aims to provide a kind of intelligent television that comprises above-mentioned video online playing device.
In embodiments of the present invention, Internet video online playing method is designed different bufferings and buffering memory size according to different multimedia forms, has effectively reduced the utilization of internal memory, can realize the principle that cushions again; Through dynamic adjustment buffering program data can better be buffered on the local internal memory earlier, the buffering while playing has effectively reduced the phenomenon that the frequent card of high definition program online playing pauses; And can dynamically effectively utilize system physical internal memory, solve the phenomenon that Online Video is play frequent card, improve smoothness sense and comfort that the user sees Internet video as buffering.Simultaneously because method of the present invention adopts the mode of decoding and afterwards cushioning earlier; Be different from the elder generation that extensively adopts at present and cushion the mode of afterwards decoding; Can be convenient to the interactive realization of multi-screen, the interactive slave of multi-screen no longer needs powerful decoding operation ability only need obtain the data playback in audio frequency spatial cache and video cache space.And can optionally extract one of the data of audio frequency spatial cache or the data in video cache space and play according to the needs of slave and function.
Description of drawings
Fig. 1 is the flow chart of a kind of Internet video online playing method of providing of the embodiment of the invention;
Fig. 2 is the flow chart of a kind of Internet video online playing method refinement of providing of the embodiment of the invention;
Fig. 3 is the modular structure sketch map of the video online playing device that provides of the embodiment of the invention.
Embodiment
In order to make the object of the invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
Fig. 1 shows the flow process of a kind of Internet video online playing method that the embodiment of the invention provides; For the ease of explanation, only show the part relevant with the embodiment of the invention, details are as follows:
A kind of Internet video online playing method comprises the steps:
S1: obtain the form of treating playing audio-video document, calculate required audio frequency spatial cache and the video cache space of buffer memory, and begin to receive audio-video document;
S2: the part that the decoding audio-video document has received, decoded voice data is put into said audio frequency spatial cache, decoded video data is put into said video cache space;
S3: judge that whether to have one in audio frequency spatial cache or the video cache space full; If then decoded voice data of taking-up and video data are play from audio frequency spatial cache and video cache space.
The Internet video online playing method that the embodiment of the invention provides is improved to the Caton phenomenon that often occurs in the prior art, particularly, and according to video format dynamic calculation audio frequency spatial cache and video cache space.The part that the decoding audio-video document has received is put into said audio frequency spatial cache with decoded voice data, and decoded video data is put into said video cache space; Judge that whether to have one in audio frequency spatial cache or the video cache space full, if then from full audio frequency spatial cache and video cache space, take out decoding back data and play.Solved the problem that the frequent card of online playing HD video pauses.Simultaneously because method of the present invention adopts the mode of decoding and afterwards cushioning earlier; Be different from the elder generation that extensively adopts at present and cushion the mode of afterwards decoding; Can be convenient to the interactive realization of multi-screen, the interactive slave of multi-screen no longer needs powerful decoding operation ability only need obtain the data playback in audio frequency spatial cache and video cache space.And can optionally extract one of the data of audio frequency spatial cache or the data in video cache space and play according to the needs of slave and function.
As shown in Figure 2, in embodiments of the present invention, step S1 specifically comprises the steps:
S11: obtain the form of treating playing audio-video document;
S12 calculates required audio frequency spatial cache of buffer memory and video cache space size according to the form of treating playing audio-video document;
S13: judge whether it is to play or search for the back for the first time to play; If then get into step S14, then get into step S16 if not;
S14: to the preceding data buffering of decoding;
S15: further judge a whether enough frame decoding of the preceding data that cushion of decoding, if then change step S2 over to and get into audio/video decoding; If not, execution in step S14 then;
S16: according to audio frequency spatial cache and video cache space size and network speed calculating period of reservation of number;
S17: point out in the program buffering and period of reservation of number, treat that the user arrives the stand-by period, get into step S15.
In embodiments of the present invention, step S2 specifically comprises the steps:
S21:, open up audio frequency spatial cache and video cache space according to audio frequency spatial cache that calculates among the step S12 and video cache space size;
S22: audio/video decoding;
S23: decoded audio, video data is put into audio frequency spatial cache and video cache space respectively.
In embodiments of the present invention; In the physical memory of intelligent television, open up two block cache spaces; Be used to store decoding voice data and video data later, play cushioning effect, can be in the process of playing; Transmission provides longer buffer time to data, plays the phenomenon that card pauses thereby solve Online Video.After video cache space or the audio frequency spatial cache block cache space among both is filled with; Begin to play; Simultaneously multimedia system still continue to receive treat playing audio-video data, by decoder decode voice data and video data, then decoded voice data with video data continuation store into respectively among voice data spatial cache and the video data spatial cache.In the process of playing; Constantly monitor the data in audio frequency spatial cache and the video cache space, if data are zero in the audio frequency spatial cache, perhaps the data in the video cache space are zero; Then user waiting prompt is waited until one of them data cached full continued playing audio-video data.
In embodiments of the present invention, step S3 comprises the steps:
S31: judge whether it is to play or search for the back for the first time to play, if, then get into step S33, if not, then get into step S32;
S32: judge that whether to have one in audio frequency spatial cache or the video cache space full, if, then get into step S33, if not, then be back to the substep S14 of step S1;
S33: playing audio-video;
Whether S34: judging has one for empty in audio frequency spatial cache and the video cache space, if, then get into step S35, if not, then be back to step S33;
S35: judge whether the audio-video document broadcast finishes; If then this flow process finishes, if not, then be back to the substep S13 of step S1.
In embodiments of the present invention, there is one for after the sky, calculates the stand-by period according to audio frequency spatial cache, video cache space and network speed at audio frequency spatial cache or video cache space; The explicit user stand-by period; In the wait process, carry out audio/video decoding, data buffering.Both have a spatial cache completely then to begin to play in audio frequency spatial cache or the video cache space; In the process of playing, multimedia system is still constantly put into audio frequency spatial cache and video cache space to decoded voice data and video data respectively, forms a circulation; Finish until the network audio-video file; Such circulation pattern can effectively utilize physical memory, solves in the process of Online Video broadcast the problem that frequent card pauses.Be different from the elder generation that extensively adopts at present and cushion the mode of afterwards decoding, can be convenient to the interactive realization of multi-screen, the interactive slave of multi-screen no longer needs powerful decoding operation ability only need obtain the data playback in audio frequency spatial cache and video cache space.And can optionally extract one of the data of audio frequency spatial cache or the data in video cache space and play according to the needs of slave and function.
In embodiments of the present invention; Different-format treat playing audio-video document; Decoded audio-video document varies in size, and needed buffer memory is also inequality, and therefore different media formats needs the different cache size of dynamic calculation; Just can effectively utilize the physical memory of system, solve the problem that the frequent card of online playing pauses.Step S12 is following according to the computational methods that the form of treating playing audio-video document calculates required audio frequency spatial cache of buffer memory and video cache space size: according to the different-format of video and audio frequency; Open up the memory size of 10 seconds required informations of buffer memory, if with the container of MKV1080P, video is for H.264; Audio frequency is AC3; Through the multimedia decoder decoding, the video after the decoding is a rgb format, and the audio frequency after the decoding is the PCM form; Sample frequency is that 44100HZ comes for example, then video cache space size=1920*1080*3*10/1024*1024=61Mbyte; Wherein: the resolution of 1080P is 1920*1080, and each pixel of RGB uses 3byte to represent, 10 seconds buffer memorys of 10 expressions; Audio frequency spatial cache size=44100*2*16*10/8=1764000byte=1.68Mbyte; Wherein: sample rate is per second 44100sample, 2 sound channels, and every sample uses 16bit to represent, 10 seconds buffer memorys of 10 expressions.
The Internet video online playing method that the embodiment of the invention provides is dynamically adjusted cache size according to different media formats, effectively utilizes system physical internal memory, solves the problem that the frequent card of online playing HD video pauses.
As shown in Figure 3, the present invention also provides a kind of video online playing device that adopts above-mentioned Internet video online playing method to realize the Internet video online playing, for the ease of explanation, only shows the part relevant with the embodiment of the invention.Wherein: audio-video document acquisition module 31 is used to obtain the form of treating playing audio-video document, calculates spatial cache, and receives audio-video document; Decoder module 32 is used for partial decoding of h that the audio-video document that audio-video document acquisition module 31 receives has been received, and decoded audio, video data is put into corresponding audio spatial cache 331 and video cache space 332 respectively; Cache module 33 is comprising audio frequency spatial cache that is used for buffered audio data 331 and the video cache space 332 that is used for the buffer memory video data; Judge module 34 is used to judge whether cache module 33 sound intermediate frequency spatial caches 331 or video cache space 332 be full; In audio frequency spatial cache 331 or video cache space 332, there is a full playing module 35 of then notifying to begin to play; Playing module 35 is used for receiving that taking out decoded data from cache module after the play command of judge module 34 plays.
In embodiments of the present invention, Internet video online playing method is designed different bufferings and buffering memory size according to different multimedia forms, has effectively reduced the utilization of internal memory, can realize the principle that cushions again; Through dynamic adjustment buffering program data can better be buffered on the local internal memory earlier, the buffering while playing has effectively reduced the phenomenon that the frequent card of high definition program online playing pauses; And can dynamically effectively utilize system physical internal memory, solve Online Video and play the phenomenon that frequent card pauses, improve smoothness sense and comfort that the user sees Internet video as buffering.Simultaneously because method of the present invention adopts the mode of decoding and afterwards cushioning earlier; Be different from the elder generation that extensively adopts at present and cushion the mode of afterwards decoding; Can be convenient to the interactive realization of multi-screen, the interactive slave of multi-screen no longer needs powerful decoding operation ability only need obtain the data playback in audio frequency spatial cache and video cache space.And can optionally extract one of the data of audio frequency spatial cache or the data in video cache space and play according to the needs of slave and function.
The above is merely preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. an Internet video online playing method is characterized in that, comprises the steps:
S1: obtain the form of treating playing audio-video document, calculate required audio frequency spatial cache and the video cache space of buffer memory, and begin to receive said audio-video document;
S2: the part that the said audio-video document of decoding has received, decoded voice data is put into said audio frequency spatial cache, decoded video data is put into said video cache space;
S3: judge said audio frequency spatial cache or said video cache space whether have one full; If then said decoded voice data of taking-up and video data are play from said audio frequency spatial cache and said video cache space.
2. Internet video online playing method according to claim 1 is characterized in that said step S1 comprises the steps:
S11: obtain the said form of treating playing audio-video document;
S12 calculates required audio frequency spatial cache of buffer memory and video cache space size according to the said form of playing audio-video document of treating;
S13: judge whether it is to play or search for the back for the first time to play; If then get into step S14, then get into step S16 if not;
S14: to the preceding data buffering of decoding;
S15: judge further whether the data that cushion before the said decoding reach a frame decoding, if then change said step S2 over to and get into audio/video decoding; If not, then carry out said step S14;
S16 is according to said audio frequency spatial cache and said video cache space size and network speed calculating period of reservation of number;
S17: point out in the program buffering and period of reservation of number, treat that the user arrives the stand-by period, gets into said step S15.
3. like the said Internet video online playing of claim 2 method, it is characterized in that said step S2 comprises the steps:
S21:, open up audio frequency spatial cache and video cache space according to said audio frequency spatial cache that calculates among the said step S12 and said video cache space size;
S22: audio/video decoding;
S23 puts into said audio frequency spatial cache and said video cache space respectively with decoded audio, video data.
4. like the said Internet video online playing of claim 3 method, it is characterized in that said step S3 comprises the steps:
S31: judge whether it is to play or search for the back for the first time to play, if, then get into said step S33, if not, then get into said step S32;
S32: judge said audio frequency spatial cache or said video cache space whether have one full, if, then get into said step S33, if not, then be back to the substep S14 of said step S1;
S33: playing audio-video;
S34: judge whether said audio frequency spatial cache and said video cache space have one for empty, if, then get into step S35, if not, then be back to said step S33;
S35: judge whether the audio-video document broadcast finishes; If then this flow process finishes, if not, then be back to the substep S13 of said step S1.
5. the device of an Internet video online playing is characterized in that, comprising:
The audio-video document acquisition module is used to obtain the form of treating playing audio-video document, calculates required audio frequency spatial cache and the video cache space of buffer memory, and receives audio-video document;
Cache module is comprising audio frequency spatial cache that is used for buffered audio data and the video cache space that is used for the buffer memory video data;
Decoder module is used for partial decoding of h that the audio-video document that the audio-video document acquisition module receives has been received, and decoded audio, video data is put into corresponding audio spatial cache and video cache space respectively;
Judge module is used to judge whether cache module sound intermediate frequency spatial cache or video cache space be full; When having a full playing module of then notifying, audio frequency spatial cache or video cache space begin to play;
Playing module is used for receiving that taking out decoded data from cache module after the play command of judge module plays.
6. an intelligent television is characterized in that, comprises the device of the said Internet video online playing of claim 5.
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