Black screen in Hyperio via hyperbian in Live View & ambient lights not working.

Hi everyone,

I’m new to Hyperion and trying to set up ambient lighting using HyperBian, but I’m facing an issue where the Live View shows a black screen and the LEDs don’t work with the video input, even though other effects work fine.

Setup Details

• Raspberry Pi: 3B+
• Hyperion Version: 2.1.1 (HyperBian)
• LEDs: WS2812B connected to GPIO18
• HDMI Splitter (1 in, 2 out):
  HD 102 Powered Splitter Certified Support
• USB HDMI Capture Card:
  Tobo Streaming Broadcasting Conference Teaching

Connection Flow

• Smart set-top box → HDMI splitter input
• Splitter output 1 → TV
• Splitter output 2 → USB HDMI capture card
• Capture card → Raspberry Pi (USB)

What’s Working

• LEDs are configured correctly in Hyperion
• Test effects like Atomic Swirl and other animations work perfectly
• USB capture card works correctly when tested on my PC
• Capture device is detected by the Raspberry Pi
• Capture hardware is enabled in Hyperion

The Problem

• In Live View, the screen is mostly black
• Ambient lighting does not react to video
• After changing some settings in the Hardware / Capture settings, sometimes:
  • Random colors appear on the LEDs
  • TV briefly shows a blue screen
  • Video appears on both the TV and Hyperion Live View
  • Ambient lighting works for a few seconds
• After that, Live View goes black again and LEDs stop reacting

What I’ve Tried

• Rechecked LED configuration
• Tested multiple Hyperion effects (all work)
• Verified capture card functionality on PC
• Confirmed the Pi detects the capture device

Any help or guidance would be greatly appreciated.

Thanks in advance!

i tried it, it works but for few seconds or minutes after that it goes black again, at that moment the signal at tv also stops for a seconds and tv goes blue screen and after that the Live video goes black

2025-12-20T06:31:13.427Z [V4L2] (ERROR) Throws error nr: VIDIOC_DQBUF error code 19, No such device
2025-12-20T06:31:13.429Z [V4L2] (ERROR) VIDIOC_STREAMOFF  error code  19, No such device
2025-12-20T06:32:38.884Z [WEBSOCKET] (DEBUG) (WebSocketJsonHandler.cpp:62:onDisconnected()) WebSocket disconnected from ::ffff:192.168.29.155 initiated via: http://192.168.29.72:8090
2025-12-20T06:32:40.245Z [WEBSOCKET] (DEBUG) (WebSocketJsonHandler.cpp:22:WebSocketJsonHandler()) New WebSocket connection from ::ffff:192.168.29.155 initiated via: http://192.168.29.72:8090
2025-12-20T06:32:40.246Z [WEBSOCKET] (INFO) JSON-API service is ready to process requests
2025-12-20T06:32:41.006Z [WEBSOCKET] (DEBUG) (JsonAPI.cpp:141:handleInstanceSwitch()) Client '::ffff:192.168.29.155' switch to Hyperion instance 0
2025-12-20T06:32:41.191Z [WEBSOCKET] (DEBUG) (JsonCallbacks.cpp:88:subscribe()) log streaming activated for client ::ffff:192.168.29.155

hi actually it got fixed, its now working but sometimes either it get freezed or again turn black, and to fix that I just rechange any of the property either 1920x1080 to 640x480 and then save and again from 640x480 to 1920x1080 and it gets fixed.

Is this possible to fix or make it auto debug/fix

can anyone help??