CN104918065A - RTSP-based system and method for realizing mobile audio and video live broadcast - Google Patents

Abstract

The invention discloses a system for realizing mobile audio and video live broadcast based on RTSP, which includes a source terminal and several visiting terminals. The source terminal includes a multimedia stream service module and an access scheduling module, and the visiting terminal includes a multimedia stream forwarding module. In the live video method, the multimedia streaming service module confirms the identity of the visiting mobile terminal, and then the access scheduling module schedules according to the set rules and selects the optimal audio and video source provider. The invention well realizes that a single mobile phone simultaneously supports a large number of users for concurrent live access, and has strong practical and popularization value.

Description

System and method for realizing mobile audio and video live broadcast based on RTSP

technical field

The present invention relates to the field of communication technology, in particular to a system and method for realizing mobile audio and video live broadcast based on RTSP (Real Time Streaming Protocol, real-time streaming media protocol).

Background technique

Mobile live broadcasting is a mobile terminal that collects live audio and video data through a wireless mobile network, processes them and then transmits them. Generally, mobile terminals need to complete real-time shooting and recording, upload in real time, and perform video live broadcast, recording and streaming media distribution through the server. Due to insufficient resources of the mobile terminal, the mobile terminal cannot support when a large number of users access concurrently at the same time.

Contents of the invention

The purpose of the present invention is to provide a system and method for realizing mobile audio and video live broadcast based on RTSP, so as to realize that a single mobile terminal can simultaneously support a large number of users for concurrent live broadcast access.

The system for realizing mobile audio and video live broadcast based on RTSP includes a source terminal and several visiting terminals, the source terminal includes a multimedia streaming service module and an access scheduling module, and the visiting terminal includes a multimedia streaming forwarding module;

The multimedia stream service module is used to monitor and confirm the identity of the visiting terminal, inform the access scheduling module of the identity information of the visiting terminal, and regularly report the status of the mobile terminal to the access scheduling module;

Access scheduling module, used to allocate audio and video sources for visiting terminals to ensure system load balance;

The multimedia stream forwarding module is used to forward audio and video data through RTSP between visiting terminals. When the load of the source terminal is too large or other performance indicators are not good, the current visiting terminal selects the one with better performance among other previous visiting terminals as the audio and video source. data dissemination.

Both the source terminal and the visitor terminal are mobile terminals.

A method for realizing mobile audio and video live broadcast based on RTSP, comprising the following steps:

A1, the multimedia streaming service module confirms the identity of the visiting mobile terminal, and transfers the visitor's IP address, port, login user name and request information to the access scheduling module;

A2. The access scheduling module schedules according to the set rules:

A21. When the visiting terminal is the first visitor, the visit scheduling module sends the audio and video source transmission parameters located in the source terminal to the visiting mobile terminal through the multimedia streaming service module;

A22. When the visiting terminal is not the first visitor, the access scheduling module selects the optimal audio and video source from the source terminal and the previous visiting terminal and assigns it to the visiting terminal based on the load, network speed, and throughput as performance indicators, and then distributes all The transmission parameters of the allocated audio and video sources are sent to the visiting terminal, while limiting the maximum load of the source terminal and each previous visiting terminal;

A3. The visiting terminal receives the audio and video data of the corresponding audio and video source, stores it in the audio and video data buffer area, and at the same time establishes a multimedia stream forwarding module based on the RTSP protocol, and sends the transmission parameters of the audio and video source to the multimedia streaming service module storage, while notifying the access scheduling module.

After A3, step A4 may also be included, the visiting terminal regularly reports the current status to the multimedia streaming service module, the multimedia streaming service module notifies the access scheduling module, and the access scheduling module removes the visiting terminal whose status report times out.

Beneficial effects of the present invention: a single mobile phone can well support a large number of users concurrent live access at the same time, which has strong practical and promotional value; effectively expands the multimedia application function of the mobile phone, and can be applied to any RTSP protocol-based equipment and similar architecture or protocol.

Description of drawings

Fig. 1 is the system principle structural diagram that the present invention realizes mobile audio and video live broadcast based on RTSP;

Fig. 2 is the flow chart of the method for realizing mobile audio and video live broadcast based on RTSP in the present invention.

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

As shown in Figure 1, the system for implementing mobile audio and video live broadcast based on RTSP includes a source terminal and several visiting terminals. As the provider of original multimedia data, the source terminal includes a multimedia streaming service module and an access scheduling module. The main functions of the multimedia streaming service module are Monitor and confirm visitors, and inform the access scheduling module of their information. After the access scheduling module schedules, the multimedia streaming service module returns the audio and video source transmission parameters to the visitor, and regularly reports the status of the visitor to the access scheduling module; access scheduling The function of the module is to allocate audio and video sources with the best quality to visitors and ensure system load balance.

The visiting terminal includes a multimedia stream forwarding module. According to the scheduling rules of the access scheduling module, when the prior visiting terminal provides audio and video sources for the new visiting terminal as a provider of multimedia data, the multimedia stream forwarding module confirms the identity of the visitor and sends The information informs the access scheduling module. After the access scheduling module schedules, the multimedia stream forwarding module returns the audio and video source transmission parameters to the visitor, and regularly reports the status of the visitor to the access scheduling module.

The method of implementing mobile audio and video live broadcast based on RTSP is shown in Figure 2. When the visiting terminal 1 visits the source terminal, the multimedia streaming service module confirms the identity of the visiting mobile terminal, and transfers the visitor's IP address, port, login user name and request information to the access scheduling module, because the visiting terminal 1 is the first visitor , the access scheduling module sends the audio and video source transmission parameters located at the source terminal to the visitor terminal 1 through the multimedia stream service module; the visitor terminal 1 initiates an audio and video stream data request message to the source terminal, then receives the audio and video data from the source terminal, and sends It is stored in the audio and video data buffer area, and at the same time establishes a multimedia stream forwarding module based on the RTSP protocol, and returns the transmission parameters of the audio and video source to the multimedia stream service module for storage, and at the same time notifies the access scheduling module that the visiting terminal 1 can provide the forwarding function , can be scheduled as a provider of audio and video stream data.

When the visiting terminal 2 visits the system to request live audio and video data, the access scheduling module compares the source terminal with the visiting terminal 1 according to parameters such as load, network speed, and throughput, and selects the terminal with better parameters (here, it is assumed to be the visiting terminal 1). Terminal 1) serves as the provider of audio and video data, and sends the transmission parameters of the audio and video source located in the visiting terminal 1 to the visiting terminal 2 through the multimedia stream forwarding module of the visiting terminal 1, and the visiting terminal 2 sends the audio and video stream data to the visiting terminal 1 Request message, then receive the audio and video data from the visiting terminal 1, store it in the audio and video data buffer area, and simultaneously establish a multimedia stream forwarding module based on the RTSP protocol, and return the transmission parameters of the audio and video source to the multimedia stream service module store, and notify the access scheduling module at the same time, the visiting terminal 2 can provide a forwarding function, and can be scheduled as a provider of audio and video stream data.

Subsequent visiting terminals entering the system can be processed according to the rules described in the above steps.

Claims (4)

1. realize the live system of mobile audio-video based on RTSP, comprise source terminal and some visiting terminals, it is characterized in that, described source terminal comprises multimedia streaming service module and access scheduling module, and described visiting terminal comprises media stream forwarding module,

The identity information of this visiting terminal, for monitoring and confirm the identity of visiting terminal, is informed access scheduling module by multimedia streaming service module, and timing is to access scheduling module report mobile terminal state;

Access scheduling module, for being visiting terminal distribution audio-video source, ensures system load balancing;

Media stream forwarding module is used for forwarding audio, video data by RTSP between visiting terminal.

2. according to claim 1ly realize the live system of mobile audio-video based on RTSP, it is characterized in that, described source terminal and visiting terminal are mobile terminal.

3. utilize the system described in claim 1 to carry out the live method of audio frequency and video at mobile terminal, it is characterized in that, comprise the following steps:

A1, multimedia streaming service module confirm the identity of visiting mobile terminals, and the IP address of visitor, port, login username and solicited message are given to access scheduling module;

A2, access scheduling module are dispatched according to the rule arranged:

When A21, visiting terminal are first visitors, the audio-video source transformation parameter being positioned at source terminal is sent to visiting mobile terminal by multimedia streaming service module by access scheduling module;

When A22, visiting terminal are not first visitors, access scheduling module selects optimum audio-video source to distribute to visiting terminal from source terminal with formerly visiting terminal with load capacity, network speed, throughput for performance index, then the transformation parameter of distributed audio-video source is sent to this visiting terminal, with the ultimate load of limit source terminal with each formerly visiting terminal;

A3, visiting terminal receive the audio, video data of corresponding audio-video source, be stored in audio, video data buffer area, set up the media stream forwarding module based on RTSP agreement simultaneously, and send to multimedia streaming service module to store the transformation parameter of audio-video source, notify access scheduling module simultaneously.

4. according to claim 3ly realize the live method of mobile audio-video based on RTSP, it is characterized in that, A4, visiting terminal timing is also comprised to multimedia streaming service module report current state after A3, multimedia streaming service module informs access scheduling module, and the visiting terminal of status report time-out removes by access scheduling module.