Q: Why can't the UVC output achieve 4K60?

A: The streamZ UVC output supports up to 4K60 (MJPEG) / 4K30 (YUY2).

To achieve UVC 4K60 output, ensure that:

• Only a single video input source is enabled
• Video Playlist is disabled
• Music Playlist is disabled
• The UVC output format is set to MJPEG in OBS or other capture software

When multiple inputs, Video Playlist, or Music Playlist features are enabled, the UVC output will operate at 4K30 to ensure stable system performance.

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Q: The livestream has video, but there is no audio at all. What might be missing?

A: This is one of the most common issues for new users. The built-in microphone of streamZ is not added to the livestream automatically and must be added manually.

Steps: In the livestream scene setup interface, go to Add Materials > Audio > Mic, then add and enable the built-in microphone signal in the current scene. Audio will then be captured normally in the livestream.

If you are using a device connected through the Line In or USB-C port, you also need to manually select and add the corresponding audio source under Add Materials > Audio.

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Q: There is echo or duplicated audio in the livestream. How can I fix it?

A: This issue is usually caused by multiple audio sources being output at the same time. A common case is when both an external audio source (such as Line in or Mic) and a video source with its own embedded audio track are added to the livestream scene simultaneously.

Solution: Open the video source materials in the livestream scene and set the source volume to 0, keeping only one active audio source.

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Q: The video from a camera or game console displays normally, but the image from a computer has black borders that cannot be removed. Why?

A: This is caused by the computer display orientation settings.

When a computer is connected to streamZ via HDMI, if the computer display orientation is set to portrait mode, the output signal will contain fixed black borders at the top and bottom. These borders cannot be adjusted from the streamZ side.

Solution: Change the display orientation in the computer settings back to the default landscape mode, then reconnect the device.

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Q: When using screen sharing, some APPs display mosaics or black screens. Is this a device issue?

A: No. This is not a device issue.

Some APPs, such as banking or payment applications, include built-in privacy protection mechanisms. When screen recording or screen casting is detected, the APP may automatically hide the content and display a black screen or mosaic effect. This is normal system behavior.

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Q: How can I tell which audio source streamZ is currently using, and whether the volume is normal?

A: In the livestream scene setup interface of the web platform, all added audio sources are displayed in the source list. Click the corresponding source to view and adjust its volume settings.

In addition, the 3.5 mm audio output port on streamZ supports headphones or speakers for real-time audio monitoring. This is the most direct way to confirm the final livestream audio output processed by streamZ.