How to change or set the stream parameters setting in Tiandy NVR? 

To change or set the stream parameters on a Tiandy NVR, follow these general steps:
1. **Log In**:
Connect to your NVR using a monitor and mouse or through the web interface by entering the NVR’s IP address into a web browser.
Enter your login credentials.
2. **Access Configuration Menu**:
Navigate to the main menu and find the settings or configuration section.
3. **Locate Stream Settings**:
Look for a section labeled “Video,” “Stream,” “Encode,” or similar to access the stream parameters.
4. **Adjust Stream Parameters**:
Within the stream settings, you can adjust parameters such as resolution, frame rate, bit rate, and compression method.
Apply the desired changes to both the main stream (for recording) and the sub-stream (for remote viewing).
5. **Save Changes**:
Save or apply the changes to ensure they take effect.
6. **Test and Monitor**:
Verify the changes by viewing the live feed and checking recorded footage to ensure the settings meet your requirements.