Introduction
2
SWRA599 – March 2018
Copyright © 2018, Texas Instruments Incorporated
SimpleLink™ CC3220-OV788 Audio/Video Streaming Reference
1
Introduction
1.1
System Description
This software reference combines TI wireless technology with OmniVision A/V technology to enable live
streaming of audio and video data over Wi-Fi
®
. This is an integrated solution demonstrating the ability of
the CC3220 to provide a full system solution for audio-video streaming applications.
1.2
System Block Diagram
Figure 1. System Block Diagram
1.3
System Operation
On boot-up, the CC3220 application initializes the OV788 by loading its firmware and sending commands
to configure the settings of the device. In parallel, the CC3220 begins connecting to an access point. After
the AP connection, the CC3220 then opens an RTSP server on the local network, and waits for RTSP
clients, such as media player applications, to connect and request live streams.
The CC3220 does not buffer video or audio data, but rather sends them out immediately over the network
when received by the OV788. Thus, any latency seen in the video stream is mostly due to buffering on the
part of the streaming client application. In a dedicated use case, this could be reduced by the system
developer by using a custom application instead of using open source.
1.4
Key System Specifications
Table 1. Key System Specifications
PARAMETER
SPECIFICATION
DETAILS
Streaming quality
Video
720p, 30 fps, 2 Mbps
Audio
PCM, 16 bps, 11025 Hz
Application protocols
RTP/RTSP
Supported Wi-Fi networks
802.11 b/g/n