Часто задаваемые вопросы по кодированию видео AV over IP

Для av over IP video encoder + 4G-модуль, 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.

вопрос: 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?

В данный момент, 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. Как результат, 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 (например, 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.

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

А: 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. Перейти к Settings или Storage Configuration.
3. Find the TF Card Recording вариант.
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 или Unformatted.

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

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

Вопрос: 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. Однако, 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?

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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 (ПАЛ или NTSC) matches the encoder settings

вопрос: 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?

А: 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 (AIN) is designed to connect directly to the microphone signal.

Wiring:

• MIC+ → Audio input (AIN)
• 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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вопрос: Can you provide the exact pin assignment for the power/audio connector (ВКК, Земля, CVBS, ВПК, LINE_OUT)? The V10 pin label image is not clear enough.

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

• Аудиовход (MIC IN / AIN) → Connects to microphone input
• Земля → Ground reference
• Аудио выход (LINE_OUT) → 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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вопрос: What is the typical current draw at 12V?

А:

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

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