58 lines
2.3 KiB
Bash
Executable File
58 lines
2.3 KiB
Bash
Executable File
#!/bin/bash
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# CHT Sender: muxed video + audio over TCP/mpegts
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# Source: Wayland (kmsgrab) + desktop audio + webcam mic
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# Usage: ./stream_av.sh [RECEIVER_IP] [PORT]
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#
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# Requires: sudo for kmsgrab, PulseAudio for audio capture
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# Audio is non-blocking (monitor source = passive tap)
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set -uo pipefail
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RECEIVER_IP="${1:-mcrndeb}"
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PORT="${2:-4444}"
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# Let root access the user's PulseAudio session
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REAL_UID="${SUDO_UID:-$(id -u)}"
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export PULSE_SERVER="unix:/run/user/${REAL_UID}/pulse/native"
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# Find the default sink's monitor source (desktop audio - what you hear)
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MONITOR=$(PULSE_SERVER="$PULSE_SERVER" pactl info 2>/dev/null | grep "Default Sink" | awk '{print $3}').monitor
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# Webcam mic - find by partial match (serial number varies)
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WEBCAM_MIC=$(PULSE_SERVER="$PULSE_SERVER" pactl list short sources 2>/dev/null | grep -i "C922" | awk '{print $2}' || true)
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echo "Monitor source: $MONITOR"
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echo "Webcam mic: ${WEBCAM_MIC:-not found}"
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echo "Streaming to: ${RECEIVER_IP}:${PORT}"
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if [ -n "$WEBCAM_MIC" ]; then
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echo "Webcam mic found, mixing desktop + mic"
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# Two pulse inputs: desktop monitor + webcam mic, mixed into one audio stream
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exec ffmpeg \
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-init_hw_device drm=drm:/dev/dri/card0 \
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-init_hw_device vaapi=va@drm \
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-device /dev/dri/card0 -f kmsgrab -framerate 30 -i - \
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-f pulse -i "$MONITOR" \
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-f pulse -i "$WEBCAM_MIC" \
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-filter_complex "[1:a][2:a]amix=inputs=2:duration=longest[aout]" \
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-map 0:v -map "[aout]" \
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-vf 'hwmap=derive_device=vaapi,scale_vaapi=w=1920:h=1080:format=nv12,fps=30' \
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-c:v h264_vaapi -qp 20 -g 30 -keyint_min 30 -bf 0 \
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-c:a aac -b:a 128k \
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-flush_packets 1 -fflags nobuffer -muxdelay 0 -muxpreload 0 \
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-f mpegts "tcp://${RECEIVER_IP}:${PORT}" \
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-hide_banner
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else
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echo "No webcam mic, desktop audio only"
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exec ffmpeg \
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-init_hw_device drm=drm:/dev/dri/card0 \
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-init_hw_device vaapi=va@drm \
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-device /dev/dri/card0 -f kmsgrab -framerate 30 -i - \
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-f pulse -i "$MONITOR" \
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-vf 'hwmap=derive_device=vaapi,scale_vaapi=w=1920:h=1080:format=nv12,fps=30' \
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-c:v h264_vaapi -qp 20 -g 30 -keyint_min 30 -bf 0 \
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-c:a aac -b:a 128k \
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-flush_packets 1 -fflags nobuffer -muxdelay 0 -muxpreload 0 \
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-f mpegts "tcp://${RECEIVER_IP}:${PORT}" \
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-hide_banner
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fi
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