CN105812847A - HLS video live broadcast method, server and system - Google Patents

HLS video live broadcast method, server and system Download PDF

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Publication number
CN105812847A
CN105812847A CN201410850711.8A CN201410850711A CN105812847A CN 105812847 A CN105812847 A CN 105812847A CN 201410850711 A CN201410850711 A CN 201410850711A CN 105812847 A CN105812847 A CN 105812847A
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China
Prior art keywords
channel
video
switching target
video segment
segment information
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CN201410850711.8A
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Chinese (zh)
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翁颐
姚良
奚溪
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China Telecom Corp Ltd
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China Telecom Corp Ltd
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Priority to CN201410850711.8A priority Critical patent/CN105812847A/en
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Abstract

The invention discloses an HLS video live broadcast method, a server and a system. The method comprises steps that a video live broadcast instruction sent by a terminal is received; a media data index M3U8 file is sent to the terminal; the M3U8 file comprises the live broadcast video segment information of the present channel and the video segment information of a switching target channel; when the terminal is switched to the switching target channel, the video segment of the switching target channel is downloaded according to the video segment information of the switching target channel and is played. Through the method, the server and the system, the M3U8 file not only contains a fragment address of the present channel and fragment addresses of other channels, a client not only analyzes the fragment address of the present channel, but also analyzes the fragment addresses of other channels in the M3U8 file, so instant re-downloading of the M3U8 file is not required after channel switching, the time for analyzing the M3U8 file is further saved, and thereby the rapid channel switching effect is realized.

Description

HLS net cast method, server and system
Technical field
The present invention relates to video display arts field, particularly relate to a kind of HLS net cast method, server and system.
Background technology
At present, OTT development is swift and violent, and by live broadcast stream media, video website can issue the program of multiple channel to user, such as: Music Radio, film platform, sports station, animation stand etc., user can watch live of intelligent television as viewing conventional TV channels.And for live broadcast stream media, in the host-host protocol that current each big video website uses, Streaming transfer protocol HLS (HTTPLIVESTREAMING) occupies consequence.HLS protocol is the Streaming transfer protocol based on HTML (Hypertext Markup Language) Http that Apple realizes, continuous media data huge for capacity are carried out segmentation by HLS protocol, it is divided into large number of small documents to transmit, cater to the file transporting of web page server, adopt a lightweight index file constantly updated to control the download of little media file and broadcasting after segmentation.
User, when watching live, can switch over, " zapping " being namely commonly called as between each live streaming media platform.Time of switching channels is the live broadcast service user QOE important component part experienced, and user is affected viewing experience by channel switch slowly.Such as, the switching time of simulated television is about 500 milliseconds, and DTV is about 1 second, IPTV is about the 1-2 second, and longer based on the live broadcast service time of switching channels of HLS be more than 3 seconds, when switching, often cause time delay, the phenomenon such as blank screen, card occurs.
Summary of the invention
In view of this, the technical problem that the invention solves the problems that is to provide a kind of HLS net cast method, and M3U8 file comprises the video segment information of switching target channel.
A kind of HLS net cast method, including: receive the net cast instruction that terminal sends;Media data index M3U8 file is sent to described terminal;Wherein, described M3U8 file comprises: current channel live video sheet segment information, switching target channel video segment information;When described terminal is switched to described switching target channel, download and play the video segment of described switching target channel according to the video segment information of described switching target channel.
According to one embodiment of present invention, further, described switching target channel includes: a upper channel of current play channel, the succeeding channel of current play channel, user's preferences channel.
According to one embodiment of present invention, further, add up described terminal and within the time set each channel watched situation, choose watch time the longest or watch that the channel that number of times is maximum is set to user's preferences channel, and generate user's preferences channel list.
According to one embodiment of present invention, further, terminal obtains current channel live video sheet segment information, parses the URL that the live video segment of current channel is corresponding, according to described URL successively foradownloaded video burst and play;Obtain the video segment information of described switching target channel, parse the URL that the video segment of described switching target channel is corresponding.
According to one embodiment of present invention, further, when described terminal is switched to described switching target channel, described terminal URL foradownloaded video fragment corresponding to the video segment of described switching target channel;Switch the video segment of target channel described in described terminal plays and send net cast instruction, obtaining M3U8 file.
According to one embodiment of present invention, further, generate described M3U8 file, the video segment information of current channel live video sheet segment information and switching target channel is inserted in described M3U8 file;Wherein, current channel live video sheet segment information comprises: N number of video segment information that current channel is live;The video segment information of switching target channel includes: a upper channel of current play channel, current play channel N number of video segment information of succeeding channel;Or, the video segment information of switching target channel includes: N number of video segment information of one or more user's preferences channels.
According to one embodiment of present invention, further, N is be more than or equal to 3.
The technical problem that the invention solves the problems that is to provide a kind of HLS video server, and M3U8 file comprises the video segment information of switching target channel.
A kind of HLS video server, including: instruction reception unit, for receiving the net cast instruction that terminal sends;M3U8 file transmitting element, for sending media data index M3U8 file to described terminal;Wherein, described M3U8 file comprises: current channel live video sheet segment information, switching target channel video segment information;Wherein, when described terminal is switched to described switching target channel, the video segment information according to described switching target channel, download and play the video segment of switching target channel.
According to one embodiment of present invention, further, described switching target channel includes: a upper channel of current play channel, the succeeding channel of current play channel, user's preferences channel.
According to one embodiment of present invention, further, preference channel setup unit, within the time set each channel watched situation for adding up described terminal, choose watch time the longest or watch that the channel that number of times is maximum is set to user's preferences channel, and generate user's preferences channel list.
According to one embodiment of present invention, further, also include: M3U8 file generating unit, be used for generating described M3U8 file, the video segment information of current channel live video sheet segment information and switching target channel is inserted in described M3U8 file;Wherein, current channel live video sheet segment information comprises: N number of video segment information that current channel is live;The video segment information of switching target channel includes: a upper channel of current play channel, current play channel N number of video segment information of succeeding channel;Or, the video segment information of switching target channel includes: N number of video segment information of one or more user's preferences channels.
According to one embodiment of present invention, further, N is be more than or equal to 3.
The technical problem that the invention solves the problems that is to provide a kind of HLS video living transmission system, and M3U8 file comprises the video segment information of switching target channel.
A kind of HLS video living transmission system, including: HLS video server as above;Terminal, including: M3U8 file request unit, it is used for sending net cast instruction, obtains M3U8 file;Broadcast unit, is used for when being switched to described switching target channel, the video segment information according to described switching target channel, downloads and play the video segment of switching target channel.
According to one embodiment of present invention, further, described broadcast unit, it is used for obtaining current channel live video sheet segment information, parses the URL that the live video segment of current channel is corresponding, according to described URL successively foradownloaded video burst and play;Obtain the video segment information of described switching target channel, parse the URL that the video segment of switching target channel is corresponding.
According to one embodiment of present invention, further, described broadcast unit, for when being switched to described switching target channel, described terminal URL foradownloaded video fragment corresponding to the video segment of described switching target channel, plays the video segment of described switching target channel.
The HLS net cast method of the present invention, server and system, M3U8 file is made not only to comprise the burst address of current channel, also comprise the burst address of neighbouring channel or user's preferences channel, require that HLS client is outside the burst address resolving current channel, also resolves the burst address of other channels in current M3U8 file.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the flow chart of an embodiment of the HLS net cast method according to the present invention;
Fig. 2 is the flow chart of another embodiment of the HLS net cast method according to the present invention;
Fig. 3 is the schematic diagram of one embodiment of M3U8 file;
Fig. 4 is the schematic diagram of an embodiment of the HLS video server according to the present invention;
Fig. 5 is the schematic diagram of an embodiment of the terminal according to the present invention.
Detailed description of the invention
With reference to the accompanying drawings the present invention is described more fully, the exemplary embodiment of the present invention is wherein described.Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, all other embodiments that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention.Below in conjunction with each figure and embodiment, technical scheme is carried out many-sided description.
Fig. 1 is the flow chart of an embodiment of the HLS net cast method according to the present invention, as shown in Figure 1:
Step 101, receives the net cast instruction that terminal sends.
Step 102, sends media data index M3U8 file to terminal.Wherein, M3U8 file comprises: current channel live video sheet segment information, switching target channel video segment information.
Step 103, when terminal is switched to switching target channel, downloads according to the video segment information of switching target channel and plays the video segment of switching target channel.
The HLS net cast method of above-described embodiment, is modified the content of M3U8 file and downloads the burst information of next channel in advance, it is possible to realizing quick channel switch.
By HLS protocol, video data is divided into media data TS file after treatment or is video segment, and media data index M3U8 file, and is present on server.M3U8 file is actually the type of organization of a kind of file group, organizes together to download for multimedia player with the form of playlist by video segment and plays.M3U8 file generally includes multiple URL of multiple above-mentioned media data TS file.After terminal obtains M3U8 file, download corresponding video clip files according to the URL in M3U8 file and play out.
Streaming media transmission technique based on HTTP is widely used on the internet.The suitability of HTTP is strong, and NAT passes through has advantage with firewall penetrating aspect.But, owing to the network quality of the Internet can not get ensureing, not having special Service assurance together with other mix of traffic such as video traffic and download, HTTPSTREAMING technology just considers to leave surplus originally designing, such as, it is desirable to complete certain burst download and just commence play out.It is partially long that this causes that user enters waiting time during channel.It addition, HLS first obtains the flow process of M3U8 inventory before also having special downloading slicing, except downloading the time loss of M3U8, also having terminal to resolve the loss of M3U8 file, this also have impact on user and enters the time of new channel.
In one embodiment, switching target channel includes: a upper channel of current play channel, the succeeding channel of current play channel, user's preferences channel.Such as, HLS video server is issued the M3U8 file of terminal and is not only comprised the TS burst list of current channel, also comprises the video slicing list of up/down adjacent channel.The video segment burst address of up/down adjacent channel, while downloading current channel video slicing according to the order of sequence, is also resolved by terminal.
After user's request channel switch to up/down adjacent channel, terminal directly utilizes the address resolved and pulls video slicing, reaches to promote the effect of switch speed;Meanwhile, terminal goes for the M3U8 list of channel of looking for novelty again, and order pulls video slicing and maintains normal play.It is also contemplated that to the feature such as the interest of user, hobby, statistics terminal situation of watching to each channel within the time set, choose watch time the longest or watch that the channel that number of times is maximum is set to user's preferences channel, and generate user's preferences channel list.
Such as, the channel of user's preferences is movie channel and sports channel.HLS video server is issued the M3U8 file of terminal and is not only comprised the video slicing list of current channel, also comprises the video slicing list of movie channel and sports channel.The video segment burst address of movie channel and sports channel, while downloading current channel video slicing according to the order of sequence, is also resolved by terminal.
After user's request channel switch to movie channel or sports channel, terminal directly utilizes the address resolved and pulls video slicing, reaches to promote the effect of switch speed;Meanwhile, terminal goes for the M3U8 list of channel of looking for novelty again, and order pulls video slicing and maintains normal play.
In one embodiment, terminal obtains current channel live video sheet segment information, parses the URL that the live video segment of current channel is corresponding, according to URL successively foradownloaded video burst and play.Obtain the video segment information of switching target channel, parse the URL that the video segment of switching target channel is corresponding.
When terminal is switched to switching target channel, terminal URL foradownloaded video fragment corresponding to the video segment of switching target channel;Terminal plays switches the video segment of target channel and sends net cast instruction, obtains the M3U8 file being switched to this channel.
Server generates M3U8 file, is inserted in M3U8 file by the video segment information of current channel live video sheet segment information and switching target channel.Wherein, current channel live video sheet segment information comprises: N number of video segment information that current channel is live.
The video segment information of switching target channel includes: a upper channel of current play channel, current play channel N number of video segment information of succeeding channel.Or, the video segment information of switching target channel includes: N number of video segment information of one or more user's preferences channels.The value of N can be determined according to concrete network or broadcast state, for instance N is be more than or equal to 3.
Fig. 2 is the flow chart of another embodiment of the HLS net cast method according to the present invention;As shown in Figure 2:
Step 201, the M3U8 file of terminal request channel 1.
Step 202, HLS video server returns the M3U8 file of channel 1, shown in upper figure in form such as Fig. 3, both 3 TS burst information of current channel (channel 1) had been comprised, also comprise 3 TS burst information of succeeding channel (channel 2) and 3 TS burst information of a upper channel (channel 100).
Step 203, terminal resolves the download address of the TS burst of M3U8 file acquisition correspondence current channel, downloads the burst of current channel according to the playing sequence of video segment and plays.Meanwhile, also the download address of the video segment of up/down adjacent channel in M3U8 (channel 100/ channel 2) is resolved.
Step 204, when user's request is switched to channel 2, terminal directly utilizes the video slicing of the video segment burst address download channels 2 of the succeeding channel parsed.
Step 205, meanwhile, terminal to server request is corresponding to the M3U8 file of channel 2.
Step 206, HLS video server returns the M3U8 of channel 2, shown in figure below in form such as Fig. 3, both comprise 3 TS burst information of current channel (channel 2), also comprise 3 TS burst information of a channel (channel 1), succeeding channel (channel 3).
Step 207, terminal continues according to new M3U8 foradownloaded video burst and plays.
The HLS net cast method of above-described embodiment, it is proposed that the direct broadcast band changing method based on HLS of improvement, can reduce user and carry out the switching time of sequential channel switching.
As shown in Figure 4, the present invention provides a kind of HLS video server 41.Instruction reception unit 411 receives the net cast instruction that terminal sends.M3U8 file transmitting element 412 sends media data index M3U8 file to terminal.M3U8 file comprises: current channel live video sheet segment information, switching target channel video segment information.When terminal is switched to switching target channel, the video segment information according to switching target channel, download and play the video segment of switching target channel.
Switching target channel includes: a upper channel of current play channel, the succeeding channel of current play channel, user's preferences channel.Preference channel setup unit 413 is added up terminal and within the time set each channel is watched situation, chooses watch time the longest or watch that the channel that number of times is maximum is set to user's preferences channel, and generates user's preferences channel list.
M3U8 file generating unit 414 generates M3U8 file, is inserted in M3U8 file by the video segment information of current channel live video sheet segment information and switching target channel.Current channel live video sheet segment information comprises: N number of video segment information that current channel is live.The video segment information of switching target channel includes: a upper channel of current play channel, current play channel N number of video segment information of succeeding channel;Or, the video segment information of switching target channel includes: N number of video segment information of one or more user's preferences channels.N is be more than or equal to 3.
The present invention provides a kind of HLS video living transmission system, including HLS video server 41 as above and terminal 42.As it is shown in figure 5, M3U8 file request unit 421 sends net cast instruction, obtain M3U8 file;The video segment of switching target channel is downloaded and play to broadcast unit 422, when being switched to switching target channel, according to the video segment information switching target channel,.
Broadcast unit 422 obtains current channel live video sheet segment information, parses the URL that the live video segment of current channel is corresponding, according to URL successively foradownloaded video burst and play;Obtain the video segment information of switching target channel, parse the URL that the video segment of switching target channel is corresponding.When being switched to switching target channel, the broadcast unit 422 URL foradownloaded video fragment corresponding to the video segment of switching target channel, play the video segment of switching target channel.
HLS net cast method, server and the system that above-described embodiment provides, HLS live broadcast service channel change delay can be reduced, by the M3U8 issuing terminal is modified, M3U8 file is made not only to comprise the burst address of current channel, also comprise the burst address of neighbouring channel or user's preferences channel, and the handling process of corresponding HLS client transformed, require that HLS client is outside the burst address resolving current channel, also resolves the burst address of other channels in current M3U8 file.HLS client can first burst address downloading slicing according to certain channel existing, rather than after switching channels, always first ask a new M3U8 file downloading slicing again, then need not re-download M3U8 file at once, also eliminate the time resolving M3U8 file, thus serving the effect that channel quickly switches.
It is likely to be achieved in many ways the method and system of the present invention.Such as, can by software, hardware, firmware or software, hardware, firmware any combination realize the method and system of the present invention.For the said sequence of step of method merely to illustrate, the step of the method for the present invention is not limited to order described in detail above, unless specifically stated otherwise.Additionally, in certain embodiments, can being also record program in the recording medium by the invention process, these programs include the machine readable instructions for realizing the method according to the invention.Thus, the present invention also covers the record medium of the storage program for performing the method according to the invention.
Description of the invention provides for example with for the purpose of describing, and is not exhaustively or limit the invention to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.Selecting and describing embodiment is in order to principles of the invention and practical application are better described, and makes those of ordinary skill in the art it will be appreciated that the present invention is thus design is suitable to the various embodiments with various amendments of special-purpose.

Claims (15)

1. a HLS net cast method, it is characterised in that including:
Receive the net cast instruction that terminal sends;
Media data index M3U8 file is sent to described terminal;Wherein, described M3U8 file comprises: current channel live video sheet segment information, switching target channel video segment information;
When described terminal is switched to described switching target channel, the video segment information according to described switching target channel, download and play the video segment of described switching target channel.
2. the method for claim 1, it is characterised in that:
Described switching target channel includes: a upper channel of current play channel, the succeeding channel of current play channel, user's preferences channel.
3. method as claimed in claim 2, it is characterised in that:
Add up described terminal and within the time set each channel watched situation, choose watch time the longest or watch that the channel that number of times is maximum is set to user's preferences channel, and generate user's preferences channel list.
4. method as claimed in claim 1 or 2, it is characterised in that:
Terminal obtains current channel live video sheet segment information, parses the URL that the live video segment of current channel is corresponding, according to described URL successively foradownloaded video burst and play;
Obtain the video segment information of described switching target channel, parse the URL that the video segment of described switching target channel is corresponding.
5. method as claimed in claim 4, it is characterised in that:
When described terminal is switched to described switching target channel, described terminal URL foradownloaded video fragment corresponding to the video segment of described switching target channel;
Switch the video segment of target channel described in described terminal plays and send net cast instruction, obtaining M3U8 file.
6. method as claimed in claim 2, it is characterised in that:
Generate described M3U8 file, the video segment information of current channel live video sheet segment information and switching target channel is inserted in described M3U8 file;
Wherein, current channel live video sheet segment information comprises: N number of video segment information that current channel is live;
The video segment information of switching target channel includes: a upper channel of current play channel, current play channel N number of video segment information of succeeding channel;
Or, the video segment information of switching target channel includes: N number of video segment information of one or more user's preferences channels.
7. method as claimed in claim 6, it is characterised in that:
N is be more than or equal to 3.
8. a HLS video server, it is characterised in that including:
Instruction reception unit, for receiving the net cast instruction that terminal sends;
M3U8 file transmitting element, for sending media data index M3U8 file to described terminal;Wherein, described M3U8 file comprises: current channel live video sheet segment information, switching target channel video segment information;
Wherein, when described terminal is switched to described switching target channel, the video segment information according to described switching target channel, download and play the video segment of switching target channel.
9. HLS video server as claimed in claim 8, it is characterised in that:
Described switching target channel includes: a upper channel of current play channel, the succeeding channel of current play channel, user's preferences channel.
10. HLS video server as claimed in claim 9, it is characterised in that:
Preference channel setup unit, watches situation to each channel for adding up described terminal within the time set, and chooses watch time the longest or watch that the channel that number of times is maximum is set to user's preferences channel, and generates user's preferences channel list.
11. HLS video server as claimed in claim 10, it is characterised in that also include:
M3U8 file generating unit, is used for generating described M3U8 file, is inserted in described M3U8 file by the video segment information of current channel live video sheet segment information and switching target channel;
Wherein, current channel live video sheet segment information comprises: N number of video segment information that current channel is live;
The video segment information of switching target channel includes: a upper channel of current play channel, current play channel N number of video segment information of succeeding channel;
Or, the video segment information of switching target channel includes: N number of video segment information of one or more user's preferences channels.
12. HLS video server as claimed in claim 11, it is characterised in that:
N is be more than or equal to 3.
13. a HLS video living transmission system, it is characterised in that:
Including: the HLS video server as described in claim 8 to 11 any one;
Terminal, including:
M3U8 file request unit, is used for sending net cast instruction, obtains M3U8 file;
Broadcast unit, is used for when being switched to described switching target channel, the video segment information according to described switching target channel, downloads and play the video segment of switching target channel.
14. system as claimed in claim 13, it is characterised in that:
Described broadcast unit, is used for obtaining current channel live video sheet segment information, parses the URL that the live video segment of current channel is corresponding, according to described URL successively foradownloaded video burst and play;Obtain the video segment information of described switching target channel, parse the URL that the video segment of switching target channel is corresponding.
15. system as claimed in claim 14, it is characterised in that:
Described broadcast unit, is used for when being switched to described switching target channel, described terminal URL foradownloaded video fragment corresponding to the video segment of described switching target channel, plays the video segment of described switching target channel.
CN201410850711.8A 2014-12-31 2014-12-31 HLS video live broadcast method, server and system Pending CN105812847A (en)

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