Fix browser UI and audio routing - hide chrome and route audio to capturable sink

Co-authored-by: Zozman <1192364+Zozman@users.noreply.github.com>

Author: Copilot

Dockerfile

@@ -1,5 +1,5 @@
 # Setup base
-FROM golang:1.24.5-alpine AS base
+FROM golang:1.23-alpine AS base
 WORKDIR /app
 COPY ./go.mod ./
 COPY ./go.sum ./

go.mod

@@ -1,8 +1,6 @@
 module github.com/Zozman/stream-website
 
-go 1.24
-
-toolchain go1.24.5
+go 1.21
 
 require (
 	github.com/chromedp/chromedp v0.11.2

main.go

@@ -110,6 +110,13 @@ func streamWebsite(ctx context.Context, config *Config) error {
 		chromedp.Flag("use-fake-device-for-media-stream", true),
 		chromedp.Flag("alsa-output-device", "pulse"),
 		chromedp.Flag("enable-features", "VaapiVideoDecoder"),
+		// Hide browser UI for clean streaming
+		chromedp.Flag("kiosk", true),
+		chromedp.Flag("disable-infobars", true),
+		chromedp.Flag("disable-automation", true),
+		chromedp.Flag("disable-restore-session-state", true),
+		chromedp.Flag("disable-background-networking", true),
+		chromedp.Flag("no-first-run", true),
 		chromedp.WindowSize(config.Width, config.Height),
 	)
 
@@ -162,8 +169,8 @@ func startFFmpegStream(ctx context.Context, config *Config, display string) erro
 		"-video_size", fmt.Sprintf("%dx%d", config.Width, config.Height),
 		"-framerate", "30",
 		"-i", display,
-		"-f", "alsa", // Use ALSA for audio capture (FFmpeg supports this)
-		"-i", "default", // Use ALSA default device (configured to route to PulseAudio)
+		"-f", "pulse", // Use PulseAudio directly for better audio capture
+		"-i", "stream_output.monitor", // Capture from the monitor of our stream sink
 		"-c:v", "libx264",
 		"-preset", "veryfast",
 		"-tune", "zerolatency",

start.sh

@@ -33,11 +33,14 @@ mkdir -p $PULSE_RUNTIME_PATH
 pulseaudio --start --log-target=syslog --system=false &
 sleep 3
 
-# Create a null sink for audio output
-pactl load-module module-null-sink sink_name=null_output sink_properties=device.description=Null_Output 2>/dev/null || echo "Failed to create null sink"
+# Create a null sink for audio output that can be monitored
+pactl load-module module-null-sink sink_name=stream_output sink_properties=device.description=Stream_Output 2>/dev/null || echo "Failed to create stream sink"
 
-# Set the null sink as default
-pactl set-default-sink null_output 2>/dev/null || echo "Failed to set default sink"
+# Set the stream sink as default so browser audio goes there
+pactl set-default-sink stream_output 2>/dev/null || echo "Failed to set default sink"
+
+# Create a loopback from the sink monitor to make it available for capture
+pactl load-module module-loopback source=stream_output.monitor sink=stream_output latency_msec=1 2>/dev/null || echo "Failed to create loopback"
 
 # Create ALSA configuration that uses the default PulseAudio device
 cat > /root/.asoundrc << EOF
@@ -55,6 +58,8 @@ echo "PulseAudio sinks:"
 pactl list short sinks 2>/dev/null || echo "PulseAudio not running"
 echo "PulseAudio sources:"
 pactl list short sources 2>/dev/null || echo "No PulseAudio sources"
+echo "PulseAudio modules:"
+pactl list short modules 2>/dev/null || echo "No PulseAudio modules"
 echo "ALSA devices:"
 aplay -l 2>/dev/null || echo "No ALSA playback devices found"