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Adaptive coding and transmitting method for video live broadcast of mobile terminal

A technology of adaptive encoding and transmission method, which is applied in the field of adaptive encoding and transmission of mobile live streaming media, and can solve problems such as low energy efficiency, heat generation, and power consumption

Active Publication Date: 2017-10-24
NANJING WEITEXI NETWORK SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, live video broadcasting is a computing-intensive application, in which image compression algorithms often involve a large number of multiplication and accumulation operations such as digital filtering, fast Fourier transform, and matrix operations. It will cause power consumption and heating problems due to low energy efficiency, and will seriously affect the response speed of the user interface
Therefore, almost all modern smart terminals use dedicated graphics processing chips (GPUs) to implement video codec operations, but they are limited to local image recording and playback, and it is difficult to output encoded data to mobile streaming applications in real time

Method used

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  • Adaptive coding and transmitting method for video live broadcast of mobile terminal
  • Adaptive coding and transmitting method for video live broadcast of mobile terminal
  • Adaptive coding and transmitting method for video live broadcast of mobile terminal

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Embodiment Construction

[0014] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0015] Such as figure 1 As shown, the implementation of the present invention is provided in the form of a software development kit (SDK) packaged with underlying library functions, which are divided into two versions, Android and IOS, and a unified C++ language API interface is provided upwards.

[0016] When performing live video broadcasting, the upper-layer application first calls the openEncoder interface to pass parameters such as live broadcast scenes (such as scenery and competitions), real-time requirements, and screen size. This interface creates and initializes related objects and threads. Such as figure 2 As shown in the steps in , during the initialization process, the underlying library mainly completes the following tasks (taking the Android system as an example):

[0017] 2.1 Detect whether the terminal system supports hardwa...

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Abstract

The invention discloses an adaptive coding and transmitting method for live broadcast of mobile streaming media. The method is mainly applied to intelligent terminals such as intelligent mobiles phones and tablets. During the collecting, coding and transmitting process of live broadcast of the mobile streaming media, H.264 coding parameters and coding modes are automatically selected according to the hardware processing capability of the terminal and underlying operation system characteristics. Meanwhile, the video acquisition frame rate is reflectively adjusted in real time according to network transmission conditions. Through applying the method, the power usage and a calorific value of the terminal can be reduced as much as possible in the live broadcasting process of the mobile streaming media, and a specific balance between the live broadcast timeliness and the viewing experience can be achieved on the basis of the equipment processing capability and the available transmission bandwidth.

Description

technical field [0001] The invention relates to the field of communication, in particular to an adaptive coding and transmission method for mobile streaming media live broadcast. Background technique [0002] With the popularization of mobile 4G networks and the introduction of the concept of "Internet +", mobile streaming media applications, especially real-time live video broadcasting of content created by users, have received more and more attention from the industry and individual users. However, in the mobile Internet environment, live streaming faces many challenges: In terms of data transmission, as the user's location moves and the network signal switches, the terminal device may be in different network environments such as WIFI, 4G and 3G, and the available bandwidth varies greatly. . When congestion occurs, the traditional packet loss algorithm often adopts the method of discarding non-key frames. This processing can certainly reduce the amount of data transmitted...

Claims

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Application Information

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IPC IPC(8): H04N21/6437H04N21/238H04N21/433
CPCH04N21/23805H04N21/4334H04N21/6125H04N21/6131H04N21/6175H04N21/6181H04N21/6437
Inventor 李灯
Owner NANJING WEITEXI NETWORK SCI & TECH
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