CN1960268A - Method for implementing multiple video strems in mobile multimedia broadcast - Google Patents
Method for implementing multiple video strems in mobile multimedia broadcast Download PDFInfo
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- CN1960268A CN1960268A CNA2006101098286A CN200610109828A CN1960268A CN 1960268 A CN1960268 A CN 1960268A CN A2006101098286 A CNA2006101098286 A CN A2006101098286A CN 200610109828 A CN200610109828 A CN 200610109828A CN 1960268 A CN1960268 A CN 1960268A
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/24—Systems for the transmission of television signals using pulse code modulation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/236—Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
- H04N21/2365—Multiplexing of several video streams
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/266—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
- H04N21/4347—Demultiplexing of several video streams
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/61—Network physical structure; Signal processing
- H04N21/6106—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
- H04N21/6131—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving transmission via a mobile phone network
Abstract
The method comprises: 1) splitting each video stream into multi video units each having its own video stream number; 2) selecting several split video units from the several video streams to form one video data unit, and recording the length of each video unit, video stream number and time stamp information in the video header of the video data unit; 3) packing the video data unit and other data to be transmitted into one channel to transmit.
Description
Technical field
The invention belongs to Mobile Multimedia Broadcasting or technical field of mobile TV, specially refer to a kind of method that realizes the multiple video strems of mobile broadcasting channel in multimedia.
Background technology
Mobile Multimedia Broadcasting is a kind of Play Technique for Multimedia of rising in recent years.By hand-held terminal, under the situation of high-speed mobile, can watch TV.Terminal receives programme by wireless protocols, and can select the channel of oneself having the right to watch, thereby can accept to select the multi-medium data of channel, is implemented in and sees TV on the portable terminal.
The aerial data of broadcast system emission are divided into different channels, transmit respectively by multiplex technique, and terminal can receive relevant data, by the player on the terminal, realize the normal play of TV.
For same channel, system can send 1 road video, also can send multi-channel video signal.
The method of existing realization multi-channel video mainly contains 2 kinds:
First kind is TS (transport stream) mode.The TS agreement is a kind of in MPEG (Motion Picture Experts Group) standard, it is placed on video, audio frequency and control information in the bag of fixing 188 byte-sized and transmits, distinguish different video flowings by PID (program code) field, thereby can support the broadcast of multiple video strems.But each bag of TS mode is very little, and efficient is lower.
Second kind is ISMA (internet stream media alliance) mode.The ISMA standard is with RTP (RTP) transfer medium information, can open a plurality of RTP passages, transmit different video flowings, but this mode only is adapted at using on the IP network.
Summary of the invention
The objective of the invention is at above-mentioned problems of the prior art, a kind of method that can realize multiple video strems in mobile multimedia broadcast system is provided, make a plurality of video flowings in mobile multimedia broadcast system, to transmit, and improve the transmission efficiency of video flowing in the mobile multimedia broadcast system.
Technical scheme of the present invention is as follows:
A kind of implementation method of multiple video strems in mobile multimedia broadcast comprises the steps:
(1) each video flowing that will need to transmit is divided into a plurality of video units, and each video unit all has the numbering of video flowing separately;
(2) video unit after choosing several respectively cut apart from plurality of video stream is formed a video data, and wherein length, the video flowing of each video unit are numbered, timestamp information is recorded in the video packet header of this video data;
(3) this video data and other data encapsulation that need transmit are transmitted in a channel.
In the above-mentioned steps (2), can use synchronous head to do isolation between each video unit in a video data.
Further, also write down the frame type information of each video unit in the described video of step (2) packet header.
Described other of above-mentioned steps (3) need data packets for transmission to draw together: the header data of each channel, video data, voice data, synchrodata.
Further, above-mentioned steps (3) is further comprising the steps of:
(31) with time division multiplexing mode multimedia broadcasting is divided into a plurality of passages, wherein has a control channel and at least one data channel;
(32), be used to transmit the real-time multimedia data of each channel for each channel of multimedia broadcasting distributes one or more data channel respectively;
(33) control information and program list information are packaged in described control channel transmission, header data, video data, voice data, the synchrodata of each channel is packaged in data channel transmission that should channel.
The present invention is encapsulated in a plurality of video flowings in the channel by each video flowing is divided into a plurality of video units, transmits a plurality of video flowings with a plurality of video units, has realized can transmitting a plurality of video flowings in the same video data.The invention belongs to the method for 1 channel multi-channel video of a kind of realization that is adapted at using in the radio network, be particluarly suitable for using in the mobile broadcast network.
Description of drawings
Fig. 1 is the schematic diagram that video flowing is divided into a plurality of video units in the video data of a channel.
Fig. 2 contains 2 schematic diagrames that are divided into the video flowing of a plurality of video units in the video data.
Embodiment
Below in conjunction with accompanying drawing the present invention is done detailed description.
The composition form of the multimedia service data that transmits in 1 channel can be various, for example, as shown in Figure 1, the embodiment of the invention provides a kind of form, and wherein the multimedia service data that transmits in 1 channel can be made up of packet header, video data, speech data, synchrodata.
Wherein, packet header is mainly control information, specifically comprises: length information, programme information, video parameter, audio frequency parameter, synchrodata parameter, timestamp, data security parameter, packet header check code etc.The packet header check code can also be verified the reliability of header packet information, and described data security parameter is the field that is used for realizing data encryption.
Subject matter to be solved by this invention is exactly how a plurality of video flowings to be encapsulated in the channel.Composition form with the business datum in 1 channel shown in Figure 1 is an example, that is to say that the video data that how to make wherein carries a plurality of video flowings.
Therefore, according to embodiments of the invention, at first each video flowing of needs transmission can be divided into a plurality of video units respectively, each video unit all has the numbering of video flowing separately, do isolation with synchronous head between each video unit, to reach wrong function of isolating.
Video unit after choosing several respectively cut apart from above-mentioned plurality of video stream is formed a video data, and wherein length, the video flowing of each video unit are numbered, timestamp information is recorded in the video packet header of this video data.
Wherein, the length of video unit can be used for locating cuts apart each video unit data, and timestamp is meant the time of broadcast, and the video flowing numbering is to be used for identifying this video unit to belong to which video flowing.
Because the extensibility of video packets header, therefore the length of the video unit that comprises of above-mentioned video data is variable.
Also can write down the frame type information of each video unit in the video packet header, it is key frame, non-key frame that the frame type of video unit is used for identifying this video unit.
By said method, just realized in a channel, having comprised a plurality of video flowings, so just can transmit by aerial with the form of wireless multi-media broadcast signal.Concrete transfer approach has a lot, is example with data composition form shown in Figure 1 also, and a kind of transfer approach is described:
Step 1: with time division multiplexing mode multimedia broadcasting is divided into a plurality of passages, wherein has a control channel and at least one data channel; Radio broadcasting can send 1 full frame structured data in a Fixed Time Interval, Fixed Time Interval can be 1 second, also can be the other times value, and full frame is made up of whole passages of a plurality of passages of above-mentioned division;
Step 2:, be used to transmit the real-time multimedia data of each channel for each channel of multimedia broadcasting distributes one or more data channel respectively;
Step 3: control information and program list information are packaged in described control channel transmission, header data, video data, voice data, the synchrodata of each channel is packaged in data channel transmission that should channel.
Be example with 2 video flowings below, specify realization details of the present invention.As shown in Figure 2, suppose to have 2 video flowings in a channel, to transmit, and suppose that first video flowing is split into 15 video units, the 2nd video flowing is split into 10 video units, after choosing and be combined into a video data sequentially, this video data has comprised this two video flowings, specifically, the 1st video flowing comprises: 1,3,5,7,9,11,13,15,17,19,21,22,23,24,25, the 2 video flowings of video unit comprise: video unit 2,4,6,8,10,12,14,16,18,20.Like this, just this video data and header data, voice data, synchrodata can be encapsulated in the channel and transmit.Although the specific implementation method of these 2 video flowings that Fig. 2 provides is to choose intersecting in the video unit of two video flowings, in fact the present invention is not limited to any order.
Because the descriptor to each video unit is arranged in the video packet header, the video flowing numbering that comprises video unit, can clearly identify every video unit and belong to which video flowing, therefore the video unit of these 2 video flowings can not exclusively be arranged according to the order among Fig. 2, be that order among Fig. 2 is adjustable, as, can also be arranged in 1,3,2,4,5,7,6,8,9,11,10,12,13,15,14,16,17,19,18,20,21,22,23,24,25, or being arranged in other order, ordering can not have certain rule.
More than be the implementation procedure of two video flowings of transmission in the channel,, can realize that 1 video flowing, 2 video flowings or the video flowing more than 2 transmit simultaneously in a channel according to same principle.
In the experiment of carrying out according to embodiments of the invention, establish the speed that each data channel has 128Kbit/s, 1 channel has comprised 2 data passages, and the speed of 256Kbit/s can be arranged.
This channel comprises: long 122 bytes in packet header, video packets head length 127 bytes, the long 26.5K byte of video data, wherein the bandwidth of first video flowing is the 20.5K byte, and the bandwidth of the 2nd video flowing stream is the 6K byte, audio pack head length 129 bytes, the long 4K byte of voice data, the long 1K byte of synchrodata for the part of not enough 32K byte, can fill complete 0.
Such television channel, can satisfy the transmission of the video data of the H264 of 1 QVGA resolution, 25 frames or AVS-M, with the transmission of the video data of the H264 of a QCIF, 12 frames or AVS-M, can provide the mobile broadcast television program of the two video streaming of quite satisfied quality to the user.
Claims (7)
1, a kind of implementation method of multiple video strems in mobile multimedia broadcast is characterised in that, comprises the steps:
(1) each video flowing that will need to transmit is divided into a plurality of video units, and each video unit all has the numbering of video flowing separately;
(2) video unit after choosing several respectively cut apart from plurality of video stream is formed a video data, and wherein length, the video flowing of each video unit are numbered, timestamp information is recorded in the video packet header of this video data;
(3) this video data and other data encapsulation that need transmit are transmitted in a channel.
2, the method for claim 1 is characterized in that, described step (2) further comprises: between each video unit in a video data, use synchronous head to do isolation.
3, the method for claim 1 is characterized in that, further writes down the frame type information of each video unit in the described video of step (2) packet header.
4, the method for claim 1 is characterized in that, described other of step (3) need data packets for transmission to draw together: the header data of each channel, video data, voice data, synchrodata.
5, method as claimed in claim 4 is characterized in that, described step (3) comprising:
(31) with time division multiplexing mode multimedia broadcasting is divided into a plurality of passages, wherein has a control channel and at least one data channel;
(32), be used to transmit the real-time multimedia data of each channel for each channel of multimedia broadcasting distributes one or more data channel respectively;
(33) control information and program list information are packaged in described control channel transmission, header data, video data, voice data, the synchrodata of each channel is packaged in data channel transmission that should channel.
6, method as claimed in claim 5 is characterized in that, mobile multimedia broadcast system sends 1 full frame structured data with a Fixed Time Interval, and described full frame is made up of whole passages of a plurality of passages of described division.
7, the method for claim 1 is characterized in that, the length of the video unit that described video data comprises is variable, and this information is recorded in the described video packet header.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101098286A CN100518074C (en) | 2006-08-16 | 2006-08-16 | Method for implementing multiple video strems in mobile multimedia broadcast |
| PCT/CN2006/003759 WO2008022501A1 (en) | 2006-08-16 | 2006-12-30 | A realizing method of multi-video streams broadcast in mobile multimedia |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101098286A CN100518074C (en) | 2006-08-16 | 2006-08-16 | Method for implementing multiple video strems in mobile multimedia broadcast |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1960268A true CN1960268A (en) | 2007-05-09 |
| CN100518074C CN100518074C (en) | 2009-07-22 |
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ID=38071771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101098286A Expired - Fee Related CN100518074C (en) | 2006-08-16 | 2006-08-16 | Method for implementing multiple video strems in mobile multimedia broadcast |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN100518074C (en) |
| WO (1) | WO2008022501A1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102710967A (en) * | 2012-05-22 | 2012-10-03 | 袁华安 | Cloud television system and method |
| CN102710968A (en) * | 2012-05-22 | 2012-10-03 | 袁华安 | Method for synchronizing video streams in cloud television system |
| CN102780916A (en) * | 2012-04-12 | 2012-11-14 | 天脉聚源(北京)传媒科技有限公司 | Method for aggregating and distributing live video streams |
| CN102917276A (en) * | 2012-11-12 | 2013-02-06 | 武汉市烽视威科技有限公司 | Audio and video interleaved packaging method applied to streaming media services |
| CN105979289A (en) * | 2015-12-03 | 2016-09-28 | 乐视致新电子科技（天津）有限公司 | Video generation and play method and device |
| CN107211173A (en) * | 2014-12-23 | 2017-09-26 | 奥兰吉公司 | Generate video-splicing |
| CN107257326A (en) * | 2010-04-20 | 2017-10-17 | 三星电子株式会社 | For transmitting interface arrangement and method with receiving media data |
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| WO2020220199A1 (en) * | 2019-04-29 | 2020-11-05 | Baidu. Com Times Technology (Beijing) Co., Ltd. | Multiple sensor data storage with compressed video stream in autonomous driving vehicles |
| CN112839242B (en) * | 2020-12-31 | 2023-02-28 | 四川长虹网络科技有限责任公司 | Method for packaging audio/video media file |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0944269B1 (en) * | 1996-12-04 | 2002-11-13 | Matsushita Electric Industrial Co., Ltd. | Optical disc for high resolution and three-dimensional image recording, optical disc reproducing device, and optical disc recording device |
| JPH10248051A (en) * | 1997-03-05 | 1998-09-14 | Matsushita Electric Ind Co Ltd | Digital data transmission method, digital data transmitter and digital data receiver |
| US20040047595A1 (en) * | 2002-07-31 | 2004-03-11 | Yasuyuki Matsuura | Recording apparatus and computer-readable program |
| CN1512768A (en) * | 2002-12-30 | 2004-07-14 | 皇家飞利浦电子股份有限公司 | Method for generating video frequency target unit in HD-DVD system |
-
2006
- 2006-08-16 CN CNB2006101098286A patent/CN100518074C/en not_active Expired - Fee Related
- 2006-12-30 WO PCT/CN2006/003759 patent/WO2008022501A1/en active Application Filing
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107257326A (en) * | 2010-04-20 | 2017-10-17 | 三星电子株式会社 | For transmitting interface arrangement and method with receiving media data |
| US11621984B2 (en) | 2010-04-20 | 2023-04-04 | Samsung Electronics Co., Ltd | Interface apparatus and method for transmitting and receiving media data |
| US11196786B2 (en) | 2010-04-20 | 2021-12-07 | Samsung Electronics Co., Ltd | Interface apparatus and method for transmitting and receiving media data |
| US10609106B2 (en) | 2010-04-20 | 2020-03-31 | Samsung Electronics Co., Ltd | Interface apparatus and method for transmitting and receiving media data |
| CN102780916A (en) * | 2012-04-12 | 2012-11-14 | 天脉聚源(北京)传媒科技有限公司 | Method for aggregating and distributing live video streams |
| CN102780916B (en) * | 2012-04-12 | 2015-03-18 | 天脉聚源(北京)传媒科技有限公司 | Method for aggregating and distributing live video streams |
| CN102710968A (en) * | 2012-05-22 | 2012-10-03 | 袁华安 | Method for synchronizing video streams in cloud television system |
| CN102710967A (en) * | 2012-05-22 | 2012-10-03 | 袁华安 | Cloud television system and method |
| CN102917276A (en) * | 2012-11-12 | 2013-02-06 | 武汉市烽视威科技有限公司 | Audio and video interleaved packaging method applied to streaming media services |
| CN102917276B (en) * | 2012-11-12 | 2016-02-24 | 武汉市烽视威科技有限公司 | A kind of Interleave method for packing being applied to streaming media service |
| CN107211173A (en) * | 2014-12-23 | 2017-09-26 | 奥兰吉公司 | Generate video-splicing |
| CN107211173B (en) * | 2014-12-23 | 2020-07-28 | 奥兰吉公司 | Method and device for generating spliced video stream |
| WO2017092333A1 (en) * | 2015-12-03 | 2017-06-08 | 乐视控股（北京）有限公司 | Method and device for generation and playback of video |
| CN105979289A (en) * | 2015-12-03 | 2016-09-28 | 乐视致新电子科技（天津）有限公司 | Video generation and play method and device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100518074C (en) | 2009-07-22 |
| WO2008022501A1 (en) | 2008-02-28 |
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