view_capture.sh

#!/bin/sh

mpv av://v4l2:/dev/video0 \
  --profile=low-latency \
  --untimed \
  --no-cache \
  --demuxer-lavf-o=input_format=yuyv422,video_size=720x576 \
  --demuxer-readahead-secs=0 \
  --vd-lavc-threads=1 \
  --fps=30 \
  --video-latency-hacks=yes \
  >/dev/null 2>&1 &
VID_PID=$!

mpv av://alsa:hw:1,0 \
  --profile=low-latency \
  --no-cache \
  --audio-buffer=0.05 \
  --audio-samplerate=48000 \
  --audio-channels=2 \
  >/dev/null 2>&1 &
AUD_PID=$!

# Cleanup handler
cleanup() {
    echo "Stopping mpv..."
    kill "$VID_PID" "$AUD_PID" 2>/dev/null
    wait "$VID_PID" "$AUD_PID" 2>/dev/null
    exit 0
}

# Catch Ctrl-C, kill, terminal close
trap cleanup INT TERM EXIT

# Wait until one exits
wait "$VID_PID" "$AUD_PID"