How to Transmit UART Data with HDMI+CVBS Encoder Boards

Many customers want to transmit video, 声音的, and UART data using our encoder boards. Here’s a clear guide on what’s possible, the limitations, and the best way to achieve it.

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1. Current Status of HDMI+CVBS Encoder Boards

特征	HDMI+CVBS Encoder Board
Serial tab in web UI	❌ Not available
UART data transmission	❌ Not available by default; 可以定制
Video/Audio Protocols	✅ RTSP (video/audio only) ✅ UDP (supports video/audio + UART if used with decoder)

Key point: The encoder board alone cannot decode UART data on a PC with VLC or other generic players. You need our paired decoder board.

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2. How UART Data Transmission Works

1. Encoder Board
   • Accepts UART data input for transmission (UDP only).
   • RTSP stream is video/audio only; UART data cannot be sent via RTSP.
2. Decoder Board
   • Required to properly decode UART data from the encoder.
   • Generic video players (例如, 可见光通信) cannot decode UART data.

Illustration of Setup:

PC ---Ethernet---> HDMI+CVBS Encoder Board ---UDP---> Matching Decoder Board ---> UART Data Output

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3. 选择: 的 (CVBS) Input with UART

If you are using 的 (CVBS) 输入, you can use our dedicated converter board:

CVBS/AV Video to Ethernet IP Video Stream Converter Board

特征	的 (CVBS) Converter Board
HDMI输入	❌ Not supported
UART data input	✅ Supported
Data retrieval on PC	✅ TCP protocol

提示: This is ideal if you only need UART + CVBS video streaming, and want to receive UART data directly on a PC.

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4. Recommendations

• HDMI+CVBS input + UART: Must use both encoder and matching decoder.
• 的 (CVBS) + UART: Use the AV converter board with TCP to retrieve UART data on PC.
• Do not expect VLC or generic players to decode UART data; they only handle video/audio streams.

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结论:
Our encoder boards can transmit UART data, 但 only with the matching decoder or the AV converter board. Understanding these options ensures you pick the right board for your system and avoid confusion or failed setups.