CN103945260A - Streaming media on-demand editing system and on-demand method - Google Patents
Streaming media on-demand editing system and on-demand method Download PDFInfo
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Abstract
The invention provides a streaming media on-demand editing system, comprising an audio and video processing unit, a live telecasting unit and a scheduling unit, wherein the audio and video processing unit is used for performing jump processing to received fragmented streaming media files according to a jump command to obtain a jump file, wherein the jump file comprises jump information including user ID information; the live telecasting unit is used for jumping a telecasted program according to the jump information after the jump file is received, and pushing the audio and video file of the program after jump according to the user ID information to a user corresponding to the user ID information and playing; the scheduling unit is used for coordinating the work of the audio and video processing unit and the live telecasting unit. The invention further provides a streaming media on-demand editing method.
Description
Technical field
The present invention relates to a kind of streaming media on demand editing system and method, relate in particular to a kind of system and method that utilizes computer or data processing equipment to edit the program of user's program request.
Technical background
Internet video is play, especially TV programme signal is live, has attracted gazing at of large quantities of users.Hold at PC no matter be, or at mobile terminal, the user of thought active always wishes to switch between different programs now, which program is not wanted to fall is yet watched, namely wish to watch multiple programs a time period, more wish can accomplish to review broadcasting even repeatedly at emphasis paragraph or excellent plot.
In the face of the customer group of One's name is legion, each user's taste, the starting point are not quite similar, just need to provide a kind of feasible solution for user, in real-time broadcast program, user can be according to the preference of self play content to program and playing duration carry out " private customization ", experience obtaining optimum user.As, user is in the program of watching cctv5 to play, also wish to pay close attention to once in a while the broadcast program of Beijing Television sports channel, conventionally need to reopen the webpage of Beijing Television sports channel and find corresponding broadcast program, can allow user experience so very poor.Or in the prior art, in the other link that respective program is set of network player, this need to switch back and forth between two programs, and each buffering again of switching.Therefore, in the prior art, or need to download the video of this two programs simultaneously, need to expend the bandwidth of twice, or need between two programs, switch back and forth, and that each switching cushions the experience bringing to user is again very poor.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides a kind of streaming media on demand editing system, comprise: audio frequency and video processing unit, for received Streaming Media fragment file being carried out to redirect processing according to jump instruction, obtain redirect file, wherein said redirect file has and comprises user ID information in interior jump information; Live unit, for carrying out the redirect of broadcast program according to described jump information receiving after described redirect file, and according to described user ID information, the audio-video document of the program after redirect is pushed to the user corresponding with described user ID information and plays; Scheduling unit, for coordinating the work of described audio frequency and video processing unit and described live unit.
Preferably, also comprise: pretreatment unit, for the audio-video document of prerecording program is carried out to preliminary treatment, is converted to the audio-video document of described prerecording program the Streaming Media fragment file of fixing duration; Described scheduling unit is coordinated the work of described pretreatment unit, described audio frequency and video processing unit and described live unit.
Preferably, described scheduling unit receives the Streaming Media fragment file through pretreated described fixing duration from described pretreatment unit, and the Streaming Media fragment file transfer of described fixing duration after pretreatment to described audio frequency and video processing unit is carried out re-sending to described live unit after described redirect processing, or the Streaming Media fragment file of described fixing duration after pretreatment is sent to described live unit without the described redirect processing of described audio frequency and video processing unit.
Preferably, described preliminary treatment also comprises the Streaming Media fragment file of described fixing duration is carried out to transcoding processing.
Preferably, described scheduling unit allows does not need the described Streaming Media fragment file that carries out redirect processing to carry out described redirect processing without described audio frequency and video processing unit, and is directly sent to described live unit.
Preferably, described audio frequency and video processing unit also carries out transcoding processing to received Streaming Media fragment file; Wherein, described Streaming Media fragment file transfer to the described audio frequency and video processing unit that described scheduling unit need to carry out transcoding processing carries out described transcoding processing.
Preferably, in the redirect moment, by the protopodium object Streaming Media fragment file of having crossed over the redirect moment, the part before the redirect moment suits into described redirect file with the part of the Streaming Media fragment file of target program of having crossed over the redirect moment after the redirect moment to described audio frequency and video processing unit.
Preferably, Streaming Media fragment file, described redirect file, the target program Streaming Media fragment file redirect moment after of former program before the redirect moment exported in order according to timestamp information in described live unit.
Preferably, the described timestamp information of described redirect file and described user ID information are included in the filename of described redirect file.
Preferably, in the filename of described redirect file, the timestamp information of the target program stream media fragment file after redirect shows in the mode different from the timestamp information of the program stream media fragment file before redirect.
Preferably, by the former program Streaming Media fragment file of having crossed over the redirect moment, the Partial Shear before the redirect moment is the first independent redirect file to described audio frequency and video processing unit, and the Partial Shear by the target channel Streaming Media fragment file of having crossed over the redirect moment after the redirect moment is the second independent redirect file.
Preferably, Streaming Media fragment file, described first redirect file, described second redirect file and the target program Streaming Media fragment file redirect moment after of former program before the redirect moment exported in order according to timestamp information in described live unit in the time of each redirect.
Preferably, consistent but put when inconsistent with the time started of Streaming Media fragment file of target program that needs redirect at the end time point of redirect moment and current protopodium object Streaming Media fragment file, described audio frequency and video processing unit suits into described redirect file by current protopodium object Streaming Media fragment file with needing the part between the putting to the end time of Streaming Media fragment file of target program that needs redirect in the described redirect moment of Streaming Media fragment file of target program of redirect.
The present invention also provides a kind of streaming media on demand editor method, comprise: audio frequency and video treatment step, according to jump instruction, received Streaming Media fragment file is carried out to redirect processing, obtain redirect file, wherein said redirect file has and comprises user ID information in interior jump information; Live treatment step, carry out the redirect of broadcast program according to described jump information receiving after described redirect file, and according to described user ID information, the audio-video document of the program after redirect is pushed to the user corresponding with described user ID information and plays; Dispatch deal step, is coordinated the work of audio frequency and video processing unit and live unit by scheduling unit.
Preferably, also comprise: pre-treatment step, the audio-video document of prerecording program is carried out to preliminary treatment, the audio-video document of described prerecording program is converted to the Streaming Media fragment file of fixing duration; Wherein, if the target program of the program of current program request or redirect is the audio-video document of described prerecording program, in described dispatch deal step, described scheduling unit is implemented described pre-treatment step by pretreatment unit to the audio-video document of described prerecording program.
Preferably, in described dispatch deal step, if the Streaming Media fragment file of the described fixing duration after pretreatment that described scheduling unit receives is the Streaming Media fragment file that need to carry out redirect processing, the Streaming Media fragment file transfer of described fixing duration to described audio frequency and video processing unit is carried out re-sending to described live unit after described redirect processing, if the Streaming Media fragment file of the described fixing duration after pretreatment that described scheduling unit receives is the Streaming Media fragment file that does not need to carry out redirect processing, the Streaming Media fragment file of described fixing duration is sent to described live unit.
Preferably, described preliminary treatment also comprises the Streaming Media fragment file of described fixing duration is carried out to transcoding processing.
Preferably, described audio frequency and video treatment step also carries out transcoding processing to received Streaming Media fragment file; Wherein, in described scheduling post-processing step, described Streaming Media fragment file transfer to the described audio frequency and video processing unit that described scheduling unit need to carry out transcoding processing carries out described transcoding processing.
Preferably, in described dispatch deal step, allow and do not need the described Streaming Media fragment file that carries out redirect processing to carry out described redirect processing without described audio frequency and video processing unit, and be directly sent to described live unit.
Preferably, in the redirect moment, by the protopodium object Streaming Media fragment file of having crossed over the redirect moment, the part before the redirect moment suits into described redirect file with the part of the Streaming Media fragment file of target program of having crossed over the redirect moment after the redirect moment to described audio frequency and video treatment step.
Preferably, described live treatment step is exported Streaming Media fragment file, described redirect file, the target program Streaming Media fragment file redirect moment after of former program before the redirect moment in order according to timestamp information.
Preferably, the described timestamp information of described redirect file and described user ID information are included in the filename of described redirect file.
Preferably, in the filename of described redirect file, the timestamp information of the target program stream media fragment file after redirect shows in the mode different from the timestamp information of the program stream media fragment file before redirect.
Preferably, by the former program Streaming Media fragment file of having crossed over the redirect moment, the Partial Shear before the redirect moment is the first independent redirect file to described audio frequency and video treatment step, and the Partial Shear by the target channel Streaming Media fragment file of having crossed over the redirect moment after the redirect moment is the second independent redirect file.
Preferably, described live treatment step is exported in order Streaming Media fragment file, described first redirect file, described second redirect file and the target program Streaming Media fragment file redirect moment after of former program before the redirect moment according to timestamp information in the time of each redirect.
Preferably, described audio frequency and video treatment step is consistent but put when inconsistent with the time started of Streaming Media fragment file of target program that needs redirect at the end time point of redirect moment and current protopodium object Streaming Media fragment file, and current protopodium object Streaming Media fragment file is suited into described redirect file with needing the part between the putting to the end time of Streaming Media fragment file of target program that needs redirect in the described redirect moment of Streaming Media fragment file of target program of redirect.
Streaming media on demand editing system of the present invention can directly be play switching at current broadcast interface, and by server end, video is suited when processing makes user side at switching channels and do not need to download two programs simultaneously, has saved bandwidth.Video after suiting is equivalent to a customized privately owned channel for user side, has avoided being switched to the time that target channel needs pending buffer.Although streaming media on demand editing system of the present invention has certain time delay just to complete switching after user's switching channels, but what watch in the time of time delay due to user is the content of original channel, its user experiences and is greatly better than downloading the card that two programs may bring simultaneously and pauses and suspend user's experience of watching pending buffer to complete.
Brief description of the drawings
Fig. 1 is the structured flowchart of the streaming media on demand editing system that relates to of embodiment of the present invention;
Fig. 2 is the process chart of the streaming media on demand editing system that relates to of embodiment of the present invention;
Fig. 3 is the process chart of the pretreatment module of the streaming media on demand editing system that relates to of embodiment of the present invention;
Fig. 4 A-C is the exemplary plot that suits processing of the streaming media on demand editing system that relates to of embodiment of the present invention.
Embodiment
At present, no matter be that digital television on-demand system or network on-demand playing system are all to adopt certain stream media format signal transmission, the mode wherein extensively adopting is the TS stream of M3U8 form, but is not limited to the TS stream of M3U8 form.The TS stream that is M3U8 form taking input and output is below as example illustrated embodiment elaboration this invention with reference to the accompanying drawings.This time disclosed execution mode can be thought and is in all respects illustration, and tool is not restricted.Scope of the present invention is not limit by the explanation of above-mentioned execution mode, only by shown in the scope of claims, and comprises all distortion within the scope of having the same meaning and claim with claim scope.
Native system is mainly used in program making and the broadcast of the units such as digital video on-demand station, video website, has input and output.The signal of input can be that live stream medium data (the TS document flow of digital TV channel) can be also the audio-video document of the prerecording programs such as advertisement; Output connects some users' playback terminal.For convenience of describing, below comprise that taking the program request operation of unique user and inputting channel two M3U8 stream media channel BTV1 and BTV2 describe as example.
Fig. 1 is the structured flowchart of streaming media on demand editing system of the present invention.As shown in Figure 1, the streaming media on demand editing system of present embodiment comprises pretreatment unit 1, scheduling unit 2, audio frequency and video processing unit 3, live unit 4 and program request end 5.The various information such as program request end 5 can be the program request equipment such as computer, Set Top Box and mobile phone, the rendition list that can display system input, user is carried out program request and is switched the operations such as program by program request end 5.The input of system can be the loading source of live stream medium data (as television channel data), can be also the prerecording library of programmes including audio/video program, the advertisement etc. of having recorded.Program request end 5 can communicate with scheduling unit 2, and the program request instruction of user input is sent to scheduling unit 2, and scheduling unit 2 can send to program request end 5 by the information of input, thereby user can understand at program request end 5 information such as programme content of input.In scheduling unit 2, dispose database, after the program request instruction of user's input is converted, be stored in database.Scheduling unit 2 has carried out communicating to connect with pretreatment unit 1, audio frequency and video processing unit 3 and live unit 4, and the set information of storing in the database with self is coordinated the operation of each unit.
Pretreatment unit 1 comprises pretreatment module 11 and prerecording library of programmes module 12; Prerecording library of programmes module 12, for storing the audio-video document of prerecording program, may be TV programme, the advertisement etc. of having recorded.Pretreatment module 11 is carried out preliminary treatment to the prerecording program being stored in prerecording library of programmes module 12, and preliminary treatment comprises transcoding processing and fluidization treatment.Transcoding processing is that coded format and the parameter of the audio-video document that sets in advance according to system adjusted the coded format of received audio-video document and parameter, makes the coded format of its audio-video document setting in advance with system and parameter consistent.Fluidization treatment is the Streaming Media fragment file (for example length is the TS file of 10 seconds) that the audio-video document of prerecording program is converted to fixing duration.Recorded program is kept in prerecording library of programmes module 12 with the form of audio-video document conventionally, one section of corresponding one or several audio-video document of program, this storage format does not meet the requirement of streaming media playing and processing conventionally, therefore after transcoding, also needs to carry out fluidization treatment.Video file is being carried out after transcoding processing, and pretreatment module 11 is converted to this audio-video document the TS stream file of 10 seconds durations.Pretreatment unit 1 sends to scheduling unit 2 after pretreated TS file is named by certain rule ordering.
Scheduling unit 2 has scheduler module 21 and database module 22.Scheduler module 21 has carried out communicating to connect with pretreatment unit 1, audio frequency and video processing unit 3 and live unit 4, in order to coordinate the operation of each unit, carry out communicating to connect with program request end 5 simultaneously, in order to receive the program request instruction of user's input, the program request instruction receiving is converted into instruction entry and is stored in database module 22, and the various parameters of control system operation are also pre-stored in database module 22 with the form of instruction entry.In the time having new user (new program request end 5) connecting system, initialization informations such as inputting channel and prerecording the rendition lists is sent to program request end 5 by scheduling unit 2.Scheduler module 21 can be downloaded the video data of each channel and be stored in database module 22 according to the video data download address of each inputting channel default in database module 22, meanwhile, can receive by pretreatment unit 1 prerecording program has been carried out to pretreated TS file.Scheduling unit 2 is delivered to successively audio frequency and video processing unit 3 according to the program request instruction of user's input by the TS file receiving and is processed, and receives by audio frequency and video processing unit 3 TS file after treatment.The TS file after treatment unit 2 that is scheduled sends to live unit 4.
Audio frequency and video processing unit 3 has document processing module 31 and memory module 32.Document processing module 31 receives TS file from scheduling unit 2, and the TS file receiving is carried out code conversion, adds the Video processing of the routines such as station symbol and suits into a redirect TS file by crossing over the former program in redirect moment and two TS files of target program.Send back to scheduling unit 2 by audio frequency and video processing unit 3 TS file after treatment, and be transmitted to live unit 4 by scheduling unit 2.
Live unit 4 has playing module 41 and library module 42.The playing module 41 of live unit 4 receives the TS file that audio frequency and video processing unit 3 sends, and is stored in library module 42.The TS file of each inputting channel or prerecording program leaves under the different paths of library module 42.
Program request end 5 is arranged on user one end, can be the digital devices such as computer, mobile phone or Set Top Box, can show the various information such as channel and prerecording the rendition list of the system input receiving from scheduling unit 2.Program that user selects to watch by program request end 5, carry out the operations such as channel switching, the above-mentioned setting of user's input is sent to scheduling unit 2.Because system may have many consumers, the program request end 5 in system has a lot of conventionally.
Fig. 2 is the process chart of program request editing system of the present invention.Illustrate the handling process of system of the present invention below in conjunction with Fig. 2.
After system of the present invention starts, scheduler module 21 is moved required predefined parameter by confession pretreatment unit 1, audio frequency and video processing unit 3, live unit 4 and the program request end 5 stored in database module 22 and is sent to each unit to carry out initialization (step S1).In database module 22, there is in advance the set information to system each several part of the present invention, for example, database module 22 can have following information: the video file information table of the channel information table of the relevant information that comprises each inputting channel, the information that comprises prerecording program, comprise the transcoding processing that aforementioned audio frequency and video processing unit 3 carries out parameter transcoding parameter information table, comprise the material information table of the information such as station symbol and captions.After system of the present invention starts, in step S1, scheduler module 21 will send to program request end 5 with the channel information table of the relevant information that comprises each inputting channel, the information such as list and broadcast address thereof of video file of each channel, prerecording program of the corresponding input of the video file information table of information that comprises prerecording program; The scheduler module 21 of scheduling unit 2 sends the information about target audio frequency and video form according to transcoding parameter information table to audio frequency and video processing unit 3, sends the material such as station symbol or the captions information that need to add in video according to material information table to audio frequency and video processing unit 3; The program request instruction that the scheduler module 21 cycle detection users of scheduling unit 2 newly assign, if the program request instruction that exists user newly to assign, reading command also operates accordingly or orders each unit to carry out corresponding operating.The above-mentioned information that sends to program request end 5 is shown to user at program request end 5, and user selects at program request end 5 channel or the program that will play.
When having user in the time that program request end 5 is inputted program request instruction, this program request instruction is transmitted to the scheduler module 21 of scheduling unit 2, and is forwarded and delivered to audio frequency and video processing unit 3(step S2 by scheduler module 21).In step S2, the information such as relevant channel or program that user can show according to program request end 5, assign program request instruction, and by program request end 5, program request instruction is sent to scheduler module 21, scheduler module 21 for this user sets up a user message table, is stored this user's the information such as broadcast state, address in the database of database module 22.
Scheduler module 21 judges that the programme content that this program request instruction relates to is prerecording program or live stream medium data (step S3).
If the programme content that this program request instruction relates to is prerecording program (step S3: be), the instruction that the pretreatment module 11 receiving scheduling unit 2 of pretreatment unit 1 send, from prerecording library of programmes module 12, extract the video file that this program is corresponding, this file is carried out sending to scheduling unit 2 after preliminary treatment, and the TS file that this program is corresponding after preliminary treatment is stored to (step S4) in database module 22.
If the programme content that this program request instruction relates to is programme televised live (step S3: no), the scheduler module 21 of scheduling unit 2 is downloaded the M3U8 file of the inputting channel of corresponding programme televised live according to this program request instruction, and start to download the TS stream file of this inputting channel, by the TS stream file stores of this downloaded inputting channel in database module 22, by download corresponding TS file transfer to audio frequency and video processing unit 3(step S5).Document processing module 31 carries out transcoding processing to this TS file, and is temporarily stored in (step S6) in memory module 32 by above-mentioned through transcoding TS file after treatment.
The scheduler module 21 of scheduling unit 2 judge within the scope of the timestamp when the TS file of pre-treatment or its finish time user whether redirect (step S7) is carried out in instruction.In step S7, if user wishes to change the program of current broadcasting, the information such as relevant channel or program that can show by program request end 5, selection needs the target programme information of redirect, assigns the jump instruction of the program converting into target program of current broadcasting.Typically, jump instruction can comprise program and the time point that desired redirect is play.System, in the time carrying out redirect processing, need to spend the regular hour, and therefore user needs the certain hour interval of the time point of the desired redirect broadcast program of distance assign jump instruction before.For example, above-mentioned certain hour is spaced apart 10 seconds, and in the time that user need to be at 10:00:00am redirect broadcast program, user must assign jump instruction before 9:59:50am.Above-mentioned certain hour interval is at least system and realizes broadcast program and carry out the required time of normal redirect.If user assigns the not enough above-mentioned certain hour of the time point of the desired redirect broadcast program of the Time interval of jump instruction interval, the system time point of desired redirect broadcast program of can postponing; If assigning the time point of the desired redirect broadcast program of the Time interval of jump instruction, user exceedes above-mentioned certain hour interval, system can correspondingly shift to an earlier date the time point of desired redirect broadcast program, or temporary described jump instruction, until start jump instruction when above-mentioned certain hour interval.The timestamp scope of current TS file refers to the time range of this TS file in programme arrangement, identical with its time range of being broadcasted in the channel of source concerning the TS file of programme televised live, be its time range that is set broadcast to the TS file of prerecording program.At this, the timestamp scope of described TS file comprises the extremely time point of the beginning of next TS file of time point from the beginning of this TS file, the wherein namely time point of the end of this TS file of the time point of the beginning of next TS file, but end time point is not included within the scope of timestamp.That is to say, upper if redirect time point is just in time in the linking point of former and later two TS files, this redirect time point is within the scope of the timestamp of next TS file, and not within the scope of the timestamp of this TS file.For example, the length of a TS file is 10 seconds, and duration is from 9:59:50am to 10:00:00am, and its initial time 9:59:50am belongs to the timestamp scope of this TS file, and end time 10:00:00am belongs to the timestamp scope of next TS file.
If scheduler module 21 judges user and has assigned the instruction (step S7: be) of carrying out redirect within the scope of the timestamp of current TS file, scheduler module 21 is transmitted to jump instruction the document processing module 31 of audio frequency and video processing unit 3, and from above-mentioned database module 22, read the TS file of corresponding prerecording program video file and be transmitted to document processing module 31, or instruction document processing module 31 reads the temporary corresponding TS file (step S8) through transcoding programme televised live video file after treatment from memory module 32.Current program request be prerecording program time, scheduler module 21 reads the TS file of corresponding prerecording program video file from above-mentioned database module 22, and is transmitted to document processing module 31; Current program request be programme televised live time, scheduler module 21 indicates document processing module 31 from memory module 32, to read the temporary corresponding TS file through transcoding programme televised live video file after treatment.
When the TS end of file that document processing module 31 judges whether to receive at it based on jump instruction, carry out redirect (step S9).For example, the length of the TS file that document processing module 31 receives is 10 seconds (such as from 9:59:50am to 10:00:00am), if the time point of desired redirect broadcast program is just in time at 10:00:00am, illustrate and when the received TS end of file (being that next TS file starts), carry out redirect, if, just in time at 9:59:55am, illustrating, the time point of desired redirect broadcast program in the time that received TS file does not finish, carries out redirect.
If document processing module 31 carries out redirect (step S9: be) while judging the TS end of file receiving at it, the time point while continuing the TS end of file that judgement receives whether with the time point consistent (step S10) of beginning of TS file of target program that needs redirect.If former program and target program are all programme televised lives, the timestamp of the TS file of two programs may be synchronous so, that is to say that the beginning and ending time of the TS file of two channels is consistent.In this case, the redirect of carrying out in the time of the former program TS end of file can directly jump to the corresponding TS file of target program and needn't suit.If time point when document processing module 31 judges the received TS end of file and the time point consistent (step S10: be) of beginning of TS file of target program that needs redirect, enter step S20, this TS file is carried out to jump information processing.If time point when document processing module 31 judges the received TS end of file and the time point inconsistent (step S10: no) of beginning of TS file of target program that needs redirect, enter step S11, this TS file is kept in to memory module 32.
If document processing module 31 judges the TS file receiving at it and carry out redirect (step S9: no) while end, document processing module 31 keeps in this TS file to memory module 32(step S11), then enter step S12.
In step S12, it is prerecording program or live stream medium data that the scheduler module 21 of scheduling unit 2 needs the TS file of the target program of redirect based on jump instruction judgement.If it is prerecording program (step S12: be) that scheduler module 21 judgements need the TS file of the target program of redirect, scheduler module 21 sends instruction to the pretreatment module 11 of pretreatment unit 1, from prerecording library of programmes module 12, extract video file corresponding to target program that needs redirect, need the video file corresponding to target program of redirect to carry out sending to scheduling unit 2 after preliminary treatment to this, and the TS file of the pretreated target program that needs redirect is stored to database module 22(step S13).Scheduler module 21 sends to the TS file of target program that needs redirect the document processing module 31(step S14 of audio frequency and video processing unit 3).
If it is live stream medium data (step S12: no) that scheduler module 21 judgements need the TS file of the target program of redirect, the scheduler module 21 of scheduling unit 2 needs the input channel information of redirect to download the M3U8 file of the inputting channel of corresponding programme televised live, and start to download the TS stream file of this inputting channel, the TS stream file of this downloaded inputting channel is sent to the document processing module 31 of audio frequency and video processing unit 3, be stored to (step S15) in database module 22 simultaneously.
Document processing module 31 judges whether to receive and needs the TS file of the target of redirect program (step S16).Need the TS file of the target of redirect program (step S16: no) if document processing module 31 judges not receive, continue to wait for.Need the TS file of the target of redirect program (step S16: be) if document processing module 31 judgements receive, it is prerecording program or live stream medium data (step S17) that document processing module 31 judgements need the TS file of the target program of redirect.If it is live stream medium data (step S17: no) that document processing module 31 judgements need the TS file of the target program of redirect, the TS file of the target program that needs redirect is carried out transcoding processing by document processing module 31, and from above-mentioned memory module 32, read the TS file (need to carry out the TS file of redirect in the time that it does not finish) in this leap redirect moment, by the TS file in above-mentioned leap redirect moment with suit into redirect TS file (step S18) through the TS file of the transcoding target program that needs redirect after treatment, then enter step S20.
If it is prerecording program (step S17: be) that document processing module 31 judgements need the TS file of the target program of redirect, document processing module 31 reads the TS file (need to carry out the TS file of redirect in the time that it does not finish) in this leap redirect moment from above-mentioned memory module 32, and the TS file in this leap redirect moment is suited into redirect TS file (step S19) with the TS file of the target program that needs redirect, then enter step S20.
In step S20, document processing module 31 carries out jump information processing to the above-mentioned TS file that needs redirect.Concrete jump information processing procedure will be described in detail below.
The document processing module 31 of audio frequency and video processing unit 3 will carry out jump information TS file after treatment (redirect file) and send back to the scheduler module 21 of scheduling unit 2, and will be transmitted to the playing module 41(step S21 of live unit 4 by scheduler module 21).Receive after redirect file, the playing module 41 of live unit 4 carries out redirect (step S22) according to the jump information in redirect file, charges in M3U8 file by redirect file.As described later, in the download address of live unit 4, there be the M3U8 file corresponding with this user ID.Before redirect, in step S24, playing module 41 is charged to M3U8 file by filename and the address of protopodium object TS file by timestamps ordering, is play by the broadcasting end corresponding with this user ID; When redirect occurs, in step S22, the filename of redirect TS file and address are charged to the M3U8 file corresponding with this user ID by playing module 41, and its order is after protopodium object TS file; Then, playing module 41 is determined timestamp or the sequence number of the TS file of the target program that will play after redirect according to the jump information in redirect file, after step S24 in the filename of the TS file of the target program that will play after redirect and address are charged to the M3U8 file corresponding with this user ID by timestamps ordering.
If scheduler module 21 judges within the scope of the timestamp of current TS file or its end time does not have redirect (step S7: no), scheduler module 21 reads the TS file of corresponding prerecording program video file and is transmitted to live unit 4 from above-mentioned database module 22, or from memory module 32, obtains the temporary corresponding TS file through transcoding programme televised live video file after treatment by document processing module 31 and be transmitted to live unit 4(step S23).
Live unit 4 stores the TS file of receiving into library module 42.When there being user's termination to enter system starting point sowing time, live unit 4 generates the M3U8 file corresponding with each user ID according to the user profile of receiving from scheduler module 21, and on Play Server the foundation download address corresponding with this user.Then, TS the file current program of this user's program request and download address thereof are charged to corresponding M3U8 file.Or in the time having set up download address and M3U8 file for this user, follow-up TS file and download address thereof are charged to according to timestamp or sequence number this user's M3U8 file (step S24) in live unit 4.Program request end 5 downloads M3U8 file according to address above mentioned and TS file just can be play (step S25).Scheduling unit 2 judges the program of program request whether be disposed (step S26).If program request end 5 is still carrying out broadcast program (step S26: no), return to step S7, scheduler module 21 judges within the scope of the timestamp when the TS file of pre-treatment user, and whether redirect is carried out in instruction, if scheduler module 21 judgements receive the jump instruction (step S7: be) of user's input, carry out the processing of step S8-S22, if scheduler module 21 judges the jump instruction (step S7: no) that does not receive user's input, the processing that enters step S23; If program request end 5 finishes broadcast program (step S26: be), end process.
Fig. 3 is the process chart of the pretreatment module 11 of pretreatment unit 1.If the input source that user sets for current time is video file, scheduling unit 2 instruction pretreatment units 1 carry out preliminary treatment to this video file.Whether pretreatment unit 1 detects receives preliminary treatment instruction (step S101) from scheduling unit 2, if receive preliminary treatment instruction (step S101: be), the pretreatment module 11 of pretreatment unit 1 is taken out corresponding audio-video document from prerecording library of programmes module 12, audio-video document is sheared and is encapsulated as the TS stream file (step S102) of 10 seconds durations.Then, pretreatment module 11 is according to the instruction of scheduling unit 2, determine the coded format that audio frequency and video processing unit 3 needs, the TS file that step S102 is obtained carries out transcoding processing so that the coded format consistent (step S103) that its coded format needs with audio frequency and video processing unit 3.Wherein, the content of transcoding processing can comprise change video code rate, changes video resolution, increases station symbol Logo, changes audio sample rate, changes audio code rate, changes audio track etc.After more than finishing dealing with, pretreatment unit 1 sends to scheduling unit 2(step S104 after pretreated TS file is named by certain rule ordering).Pretreated TS stream file is by following rule name: filename each several part is cut apart with underscore, the implication of every part respectively: video file ID_ code check _ date _ Hour Minute Second millisecond _ sequence number.For example, filename may be P420_800000_20131211_124643962_00000001.ts, show that this file ID is that P420(P herein represents prerecording program), code check is 800000, the pretreated date is on December 11st, 2013, the predetermined initial time of being broadcasted of this TS file be 12: 46: 43 962 milliseconds, the sequence number in this channel TS file is 00000001.So, follow-up TS filename is respectively P420_800000_20131211_124653962_00000002.ts, P420_800000_20131211_124703962_00000003.ts, by that analogy.Date Hour Minute Second millisecond part in filename is the timestamp of this file, and the time that starts to play that can set in listing by this prerecording program adds that the reproduction time at this TS file place in prerecording program calculates.Pretreated TS file sends to scheduling unit 2(step S105).
In the above-described embodiment, scheduling unit 2 is the rule name with programme televised live TS file by the TS file of the programme televised live of downloading, its naming rule is as follows: filename each several part is cut apart with underscore, and the implication of every part is: channel ID_ code check _ date _ Hour Minute Second millisecond _ sequence number.For example, BTV1_800000_20131211_124643962_18762041.ts, the channel ID that shows this file is BTV1, code check is 800000, date is on December 11st, 2013, the initial time of TS file be 12: 46: 43 962 milliseconds, the sequence number in this channel TS file is 18762041.Date Hour Minute Second millisecond part in filename is the timestamp of this file, can calculate by the information in the M3U8 file in the channel of source.
In the above-described embodiment, to process be that redirect prosthomere object TS file (the TS file of current program) and the redirect deutomerite object TS file (the TS file of target program) of having crossed over redirect time point are sheared and amalgamation suiting when redirect.; from redirect prosthomere object TS file, shear out the first half from the initial time of this file to redirect time point; from redirect deutomerite object TS file, shear out the latter half from redirect time point to the end time; and two parts are carried out to amalgamation, become the TS file comprising after the suiting of the content of program after redirect time point after content before redirect time point of program before redirect and redirect.The frame number of statistics redirect TS file, when name for aftermentioned.
Fig. 4 is the exemplary plot that suits processing.Wherein, Fig. 4 A is to be the redirect schematic diagram on the end time of TS file point time at redirect and redirect time point between the synchronous programme televised live of two timestamps.Now, two TS files of former program and target program do not need to suit, and last TS file of original channel is directly used as redirect file designation, the TS file after the redirect of jump information sensing target channel.
Fig. 4 B is in redirect between the synchronous programme televised live of two timestamps but redirect time point is not the redirect schematic diagram on the end time of TS file point time.Now, the part of the TS file of the part of protopodium object TS file before redirect time point and target program after redirect time point is sheared out and pieces together the redirect TS file of 10 seconds duration.
But the TS document time stamp of the program before and after redirect is sometimes nonsynchronous, below return this programme televised live as example suiting to process and describe when asynchronous to TS document time stamp to jump to prerecording program and then redirect from programme televised live.
Fig. 4 C is the exemplary plot of redirect between two nonsynchronous programs of TS document time stamp.As shown in Figure 4 C, if jump to prerecording program when 10 seconds TS file in programme televised live the 4th second, and first TS file duration of prerecording program is 10 seconds, TS document processing module 31 is sheared out by the content of first 4 seconds of this 10 seconds TS files of programme televised live, carry out amalgamation with first TS file of prerecording program, form a duration and be 14 seconds through jump information TS file after treatment, completed redirect.
This programme televised live (as shown in Figure 4 C) is returned in the redirect that finally sometimes needs at prerecording program, and now last TS file duration of prerecording program is 5 seconds, and the TS file of the leap jump-point of programme televised live also has the duration of 1 second after jump-point.Same by above-mentioned rule, shear out in the TS file of programme televised live the content of last 1 second, the content of last 1 second in the TS file of last TS file of prerecording program and the programme televised live sheared out is carried out to amalgamation, form a duration and be 6 seconds through jump information TS file after treatment, complete redirect again.
In the above-described embodiment, document processing module 31 uses the rule different with the TS file of prerecording program from the TS file of programme televised live to name what obtain through jump information TS file after treatment.Particularly, in the filename of jump information TS file after treatment, comprising redirect prosthomere object information and redirect deutomerite object information and user ID.Redirect deutomerite object information comprises multiple parts, and each part starts with " # ", comprising: program category (the programme televised live C in channel ID/ video file ID before # redirect, this TS of # file after video frame number, # redirect; Prerecording program P), the sequence number of 10 seconds TS files of target channel ID/ video file ID that # jumps to, target that # jumps in this target channel/video file.For example, ID be the user of U0024 program request in 12 o'clock on December 11 in 2013 BTV1, in the time of 12 o'clock 30 minutes 10 seconds 362 milliseconds, be switched to BTV2, TS file at the BTV1 putting this switching time is BTV1_800000_20131211_123008962_18762041.ts, and the TS file of BTV2 is BTV2_800000_20131211_123009854_12586224.ts.Now, two TS files are suited the 12586225#U0024.ts for redirect file BTV1_800000_20131211_123008962_18762041#BTV1#262#C#BTV2# by TS document processing module 31.Wherein, #BTV1 represents channel or the program before redirect, #262 represents the video frame number in this TS file, #C represents to jump to a channel, #BTV2 represents that channel designation or the ID after redirect is BTV2, #12586224 indicates to jump to the TS file that the sequence number of target channel is 12586225, and U0024 represents that this redirect file belongs to the user that ID is U0024.
In the above-described embodiment, the TS file that the live module 41 of live unit 4 is received the document processing module from audio frequency and video processing unit 3 31 is kept at the relevant position of the library module 42 of live unit 4, and the TS file of same inputting channel is placed on same position.Simultaneously, in the live module 41 of live unit 4, set up the needed http Download Server of M3U8 streaming media playing, under the download directory of Download Server, there are several M3U8 files, the corresponding program request end of each M3U8 file, comprises broadcast path and the filename of each TS file in current TS file playlist, file duration and the table of this program request end in M3U8 file.In the present embodiment, M3U8 file comprises the information of three up-to-date TS files, and M3U8 file upgrades once for every 10 seconds.Live module 41 judges the playing sequence of the TS file of each program request end according to the timestamp information of TS file or sequence number, upgrade in order file duration and TS file address in M3U8 file, completes the broadcasting of the TS file of this program request end.In the time finding to have multiple timestamps or the identical TS file of sequence number, live module 41 is analyzed the filename of these TS files, therefrom find out the redirect TS file that belongs to this program request end, analyze the filename of this redirect TS file, obtain the sequence number of the TS file that will play after the target program of video frame number, redirect of this TS file and redirect.Calculate the duration of TS file according to the video frame number of this TS file, charge to M3U8 file.Determine the next TS file address of the target program after redirect according to the sequence number of the TS file that will play after the target program of this TS file redirect and redirect, charge to M3U8 file.So, the playing device of network television client end or digital television station just can be downloaded the M3U8 file that this program request end is corresponding by the download address of http-server, and downloads TS file according to the content of this M3U8 file to the respective paths of TS library module 42 and play.
In the above-described embodiment, in the time having new subscriber access system, this new user's program request end 5 connects with the scheduler module 21 of scheduling unit 2, and processes according to above-mentioned handling process.
In the present embodiment, the TS file in the time that internal system is processed and export has all adopted the duration of 10 seconds, but is not limited to this, also can adopt other durations, such as consistent with the TS file duration of input.The duration when duration of the TS file using when meanwhile, internal system is processed also can be different from output.
In the present embodiment, before redirect time point is taken in, program suits with two TS files of the target program that needs redirect, but is not limited to this, also can only shear and not carry out amalgamation.In this case, do not carry out amalgamation from current program with two video segments of TS paper cut of target program that need redirect but direct packaging becomes two TS files.That is to say and now have two redirect TS files, naming rule and above-described embodiment of filename are basic identical, but in filename, have increased the part of the playing sequence that represents these two TS files.Save like this amalgamation processing, can complete faster processing procedure, can ensure that the duration of all TS files can not exceed 10 seconds, is conducive to transfer of data simultaneously.
In the present embodiment, the TS stream that is M3U8 form taking input and output is as example, but is not limited to this, and input and output can be also the TS stream of extended formatting, such as the TS stream of other MPEG2 forms.Now, each unit of system adopts the underlying component that can process the TS stream of this form.
In the present embodiment, what prerecording library of programmes module was deposited is the original video files without fluidisation, but is not limited to this.Also after can in advance original video files being processed to the TS file format fluidisation using according to internal system, leave prerecording library of programmes module in.Now, the program of storing in prerecording library of programmes module can directly send to scheduling unit 2 without the processing of pretreatment unit.Therefore, the processing load reduction of system, can further improve processing speed.
In the present embodiment, by adding a mark that represents the program request end under it to determine which user which redirect TS file belongs to, but be not limited to this in the time that redirect TS names in filename.Can also each user's program jump information be sent to audio frequency and video processing unit 3 and broadcast unit 4 by scheduling unit 2, broadcast unit 4 judges according to this information which user which redirect TS file belongs in the time playing.
In the present embodiment, the TS file of prerecording program and programme televised live carries out transcoding processing respectively in pretreatment unit 1 and audio frequency and video processing unit 3, but is not limited to this.Also can carry out fluidization treatment to the audio-video document of prerecording program by pretreatment unit 1, the TS file after fluidisation of the audio-video document by audio frequency and video processing unit 3 to prerecording program and the TS file of programme televised live carry out transcoding processing.Can avoid like this using two cover transcoding devices, be conducive to reduce costs and miniaturization.
In the present embodiment, pretreatment unit 1 is first fluidized to Streaming Media fragment file by the audio-video document of prerecording program and carries out transcoding again, but is not limited to this.Also can first carry out transcoding to the audio-video document of this prerecording program, then be fluidized to Streaming Media fragment file.
Claims (26)
1. a streaming media on demand editing system, comprising:
Audio frequency and video processing unit, for according to jump instruction, received Streaming Media fragment file being carried out to redirect processing, obtains redirect file, and wherein said redirect file has and comprises user ID information in interior jump information;
Live unit, for carrying out the redirect of broadcast program according to described jump information receiving after described redirect file, and according to described user ID information, the audio-video document of the program after redirect is pushed to the user corresponding with described user ID information and plays;
Scheduling unit, for coordinating the work of described audio frequency and video processing unit and described live unit.
2. streaming media on demand editing system according to claim 1, also comprises:
Pretreatment unit, for the audio-video document of prerecording program is carried out to preliminary treatment, is converted to the audio-video document of described prerecording program the Streaming Media fragment file of fixing duration;
Described scheduling unit is coordinated the work of described pretreatment unit, described audio frequency and video processing unit and described live unit.
3. streaming media on demand editing system according to claim 2, is characterized in that:
Described scheduling unit receives the Streaming Media fragment file through pretreated described fixing duration from described pretreatment unit, and the Streaming Media fragment file transfer of described fixing duration after pretreatment to described audio frequency and video processing unit is carried out re-sending to described live unit after described redirect processing, or the Streaming Media fragment file of described fixing duration after pretreatment is sent to described live unit without the described redirect processing of described audio frequency and video processing unit.
4. streaming media on demand editing system according to claim 2, is characterized in that:
Described preliminary treatment also comprises carries out transcoding processing to the Streaming Media fragment file of described fixing duration.
5. streaming media on demand editing system according to claim 1, is characterized in that:
Described scheduling unit allows does not need the described Streaming Media fragment file that carries out redirect processing to carry out described redirect processing without described audio frequency and video processing unit, and is directly sent to described live unit.
6. streaming media on demand editing system according to claim 1, is characterized in that:
Described audio frequency and video processing unit also carries out transcoding processing to received Streaming Media fragment file; Wherein, described Streaming Media fragment file transfer to the described audio frequency and video processing unit that described scheduling unit need to carry out transcoding processing carries out described transcoding processing.
7. according to the streaming media on demand editing system described in claim 1～6, it is characterized in that:
In the redirect moment, by the protopodium object Streaming Media fragment file of having crossed over the redirect moment, the part before the redirect moment suits into described redirect file with the part of the Streaming Media fragment file of target program of having crossed over the redirect moment after the redirect moment to described audio frequency and video processing unit.
8. streaming media on demand editing system according to claim 7, is characterized in that:
Streaming Media fragment file, described redirect file, the target program Streaming Media fragment file redirect moment after of former program before the redirect moment exported in order according to timestamp information in described live unit.
9. streaming media on demand editing system according to claim 8, is characterized in that:
The described timestamp information of described redirect file and described user ID information are included in the filename of described redirect file.
10. streaming media on demand editing system according to claim 9, is characterized in that:
In the filename of described redirect file, the timestamp information of the target program stream media fragment file after redirect shows in the mode different from the timestamp information of the program stream media fragment file before redirect.
11. streaming media on demand editing systems according to claim 6, is characterized in that:
By the former program Streaming Media fragment file of having crossed over the redirect moment, the Partial Shear before the redirect moment is the first independent redirect file to described audio frequency and video processing unit, and the Partial Shear by the target channel Streaming Media fragment file of having crossed over the redirect moment after the redirect moment is the second independent redirect file.
12. streaming media on demand editing systems according to claim 11, is characterized in that:
Streaming Media fragment file, described first redirect file, described second redirect file and the target program Streaming Media fragment file redirect moment after of former program before the redirect moment exported in order according to timestamp information in described live unit in the time of each redirect.
13. according to the streaming media on demand editing system described in claim 1～6, it is characterized in that:
Consistent but put when inconsistent with the time started of Streaming Media fragment file of target program that needs redirect at the end time point of redirect moment and current protopodium object Streaming Media fragment file, described audio frequency and video processing unit suits into described redirect file by current protopodium object Streaming Media fragment file with needing the part between the putting to the end time of Streaming Media fragment file of target program that needs redirect in the described redirect moment of Streaming Media fragment file of target program of redirect.
14. 1 kinds of streaming media on demand editors' method, comprising:
Audio frequency and video treatment step, carries out redirect processing according to jump instruction to received Streaming Media fragment file, obtains redirect file, and wherein said redirect file has and comprises user ID information in interior jump information;
Live treatment step, carry out the redirect of broadcast program according to described jump information receiving after described redirect file, and according to described user ID information, the audio-video document of the program after redirect is pushed to the user corresponding with described user ID information and plays;
Dispatch deal step, is coordinated the work of audio frequency and video processing unit and live unit by scheduling unit.
15. streaming media on demand editors' according to claim 14 method, also comprises:
Pre-treatment step, carries out preliminary treatment to the audio-video document of prerecording program, the audio-video document of described prerecording program is converted to the Streaming Media fragment file of fixing duration; Wherein,
If the target program of the program of current program request or redirect is the audio-video document of described prerecording program, in described dispatch deal step, described scheduling unit is implemented described pre-treatment step by pretreatment unit to the audio-video document of described prerecording program.
16. streaming media on demand editors' according to claim 15 method, is characterized in that:
In described dispatch deal step, if the Streaming Media fragment file of the described fixing duration after pretreatment that described scheduling unit receives is the Streaming Media fragment file that need to carry out redirect processing, the Streaming Media fragment file transfer of described fixing duration to described audio frequency and video processing unit is carried out re-sending to described live unit after described redirect processing, if the Streaming Media fragment file of the described fixing duration after pretreatment that described scheduling unit receives is the Streaming Media fragment file that does not need to carry out redirect processing, the Streaming Media fragment file of described fixing duration is sent to described live unit.
17. streaming media on demand editors' according to claim 15 method, is characterized in that:
Described preliminary treatment also comprises carries out transcoding processing to the Streaming Media fragment file of described fixing duration.
18. streaming media on demand editors' according to claim 14 method, is characterized in that:
Described audio frequency and video treatment step also carries out transcoding processing to received Streaming Media fragment file;
Wherein, in described scheduling post-processing step, described Streaming Media fragment file transfer to the described audio frequency and video processing unit that described scheduling unit need to carry out transcoding processing carries out described transcoding processing.
19. according to the method for the streaming media on demand editor described in claim 14～18, it is characterized in that:
In described dispatch deal step, allow and do not need the described Streaming Media fragment file that carries out redirect processing to carry out described redirect processing without described audio frequency and video processing unit, and be directly sent to described live unit.
20. streaming media on demand editors' according to claim 19 method, is characterized in that:
In the redirect moment, by the protopodium object Streaming Media fragment file of having crossed over the redirect moment, the part before the redirect moment suits into described redirect file with the part of the Streaming Media fragment file of target program of having crossed over the redirect moment after the redirect moment to described audio frequency and video treatment step.
21. streaming media on demand editors' according to claim 20 method, is characterized in that:
Described live treatment step is exported Streaming Media fragment file, described redirect file, the target program Streaming Media fragment file redirect moment after of former program before the redirect moment in order according to timestamp information.
22. streaming media on demand editors' according to claim 21 method, is characterized in that:
The described timestamp information of described redirect file and described user ID information are included in the filename of described redirect file.
23. streaming media on demand editors' according to claim 22 method, is characterized in that:
In the filename of described redirect file, the timestamp information of the target program stream media fragment file after redirect shows in the mode different from the timestamp information of the program stream media fragment file before redirect.
24. streaming media on demand editors' according to claim 19 method, is characterized in that:
By the former program Streaming Media fragment file of having crossed over the redirect moment, the Partial Shear before the redirect moment is the first independent redirect file to described audio frequency and video treatment step, and the Partial Shear by the target channel Streaming Media fragment file of having crossed over the redirect moment after the redirect moment is the second independent redirect file.
25. streaming media on demand editors' according to claim 24 method, is characterized in that:
Described live treatment step is exported in order Streaming Media fragment file, described first redirect file, described second redirect file and the target program Streaming Media fragment file redirect moment after of former program before the redirect moment according to timestamp information in the time of each redirect.
26. according to the method for the streaming media on demand editor described in claim 14～18, it is characterized in that:
Described audio frequency and video treatment step is consistent but put when inconsistent with the time started of Streaming Media fragment file of target program that needs redirect at the end time point of redirect moment and current protopodium object Streaming Media fragment file, and current protopodium object Streaming Media fragment file is suited into described redirect file with needing the part between the putting to the end time of Streaming Media fragment file of target program that needs redirect in the described redirect moment of Streaming Media fragment file of target program of redirect.
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Denomination of invention: A streaming media on demand editing system and method Effective date of registration: 20210104 Granted publication date: 20170707 Pledgee: Inner Mongolia Huipu Energy Co.,Ltd. Pledgor: WUXI TVMINING MEDIA SCIENCE & TECHNOLOGY Co.,Ltd. Registration number: Y2020990001517 |
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