AV over IP 视频编码器常见问题解答

为了 av over IP video encoder + 4G模块, we recommended that use the R380 player.

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Does the R380 Player support multi-screen or simultaneous video playback?

At R380 player, it can set here.

Q: I need to connect to the LTE web UI to set up the required APN. My SIM uses a private APN and does not provide public Internet access, but it assigns a local IP address. I want to access this local IP to establish an RTSP stream from my office to a remote encoder over a 4G LTE connection. Is this supported?

眼下, this use case is not fully supported in the current firmware.
APN Configuration Limitation
The current firmware does not support direct user configuration of the APN through the LTE web UI or the 4G module interface.
Current System Behavior
In the existing design, the APN settings are managed by the main SoC, which handles the dial-up process. 因此, APN configuration must be performed through our encoder module rather than directly on the LTE module itself.
Network Access Consideration
In your scenario, since the SIM uses a private APN without Internet access and only provides a local IP, accessing the device (例如, for RTSP streaming) depends on the operator’s private network routing. This requires proper APN configuration and network-side support to enable end-to-end connectivity.
Planned Improvement
Our engineering team is evaluating a firmware update to add user-configurable APN support. This enhancement will provide more flexibility for private network deployments such as yours. The estimated development timeline is approximately 7–10 days.

Q: How do I enable the TF card auto recording function?

一个: To enable TF card auto recording, please log in to the device’s Web Configuration Interface and manually configure the recording settings.

You can follow these steps:

1. Open the device Web UI in your browser.
2. 前往 设置 要么 Storage Configuration.
3. Find the TF卡录音 选项.
4. Enable or disable TF card recording as needed.
5. Check the TF card status and capacity information:
   • Confirm whether the TF card is detected correctly.
   • Verify the available storage capacity.
   • Check if the TF card status shows Readable 要么 Unformatted.

If the TF card is shown as Unformatted, please format the card before enabling recording.

注意: It is recommended to use a compatible, high-speed TF card for stable recording performance.

问题: CVBS to IP Encoder Switches to Black-and-White After Weak Signal

I am experiencing some issues with the TO IP encoder. I am using it to convert the signal from an analog video receiver (VRX). When the signal quality is good, the image is excellent and in color. 然而, as soon as the signal from the receiver becomes weak for a short period of time, the converter board switches to black-and-white mode, and after that it is no longer possible to restore the color image automatically. How can this issue be resolved?

回答

Thank you for your feedback. This issue is usually caused by unstable or weak CVBS video signals from the analog receiver. When the signal temporarily drops below the decoder threshold, some standard CVBS-to-IP encoder boards may lose color synchronization (PAL/NTSC chroma lock) and remain in black-and-white mode even after the signal recovers.

To help us confirm the exact cause, could you please send us a photo of the encoder board you are currently using?

We also recommend using our newer upgraded model, which is specially designed for weak and unstable analog video signals. It features improved low-signal locking and more stable color recovery performance.

Product link:
CVBS to Ethernet IP Encoder – Stable in Weak Signal / Low Signal Lock Version

Advantages of the New Version

• Better tolerance for weak analog video signals
• Improved PAL/NTSC automatic detection
• Faster recovery after signal interruption
• Prevents permanent black-and-white mode after temporary signal loss
• More stable operation for wireless VRX applications

Additional Suggestions

1. Ensure the VRX output signal level is stable
2. Use high-quality shielded CVBS cables
3. Avoid excessive cable length or power interference
4. Confirm that the video format (PAL or NTSC) matches the encoder settings

Q: Does the MIC pin provide bias voltage for an electret microphone, or does it expect a line-level signal? If biased, what voltage and resistor value is used?

一个: The MIC input on the V10 board supports a standard electret microphone connection.

• The board provides an internal 3.3V bias supply for the microphone input.
• You do not need an external pre-amplifier for a standard electret mic capsule.
• The MIC input (艾恩) is designed to connect directly to the microphone signal.

Wiring:

• MIC+ → Audio input (艾恩)
• MIC− → GND

The biasing network is already handled internally on the board, so no external resistor calculation is required from the user side.

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Q: Can you provide the exact pin assignment for the power/audio connector (电压控制电路, 接地, CVBS, MIC, 线路输出)? The V10 pin label image is not clear enough.

一个: The connector uses a simple 3-pin audio interface structure:

• 音频输入 (MIC IN / 艾恩) → Connects to microphone input
• 接地 → Ground reference
• 音频输出 (线路输出) → Outputs audio signal to external amplifier or speaker system

Functional mapping:

• MIC → Audio Input (for microphone)
• LINE OUT → Audio Output (to amplifier / speaker)
• GND → Common ground

This design separates input and output audio paths to avoid interference and ensure stable signal transmission.

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Q: What is the typical current draw at 12V?

一个:

• Typical operating current at 12V is approximately 130 毫安
• Power consumption may vary slightly depending on:
  • Video input resolution (CVBS signal load)
  • Audio usage (MIC / LINE OUT active or not)
  • Network transmission activity

Under normal operating conditions, the board remains low-power and stable for continuous use.