ffmpeg-rtsp-stream.sh

#!/bin/bash

function finish {
  if [[ "${rtspContainerId:-}" != "" ]]; then
    docker kill "$rtspContainerId"
  fi
  if [[ "${ffmpegPid:-}" != "" ]]; then
    kill "$ffmpegPid"
  fi
}

trap finish EXIT

rtspContainerId=$( \
  docker run --rm -it -d \
    -e RTSP_PROTOCOLS=tcp \
    -p 8554:8554 \
    aler9/rtsp-simple-server \
)

while true; do
  if nc -w1 127.0.0.1 8554; then
    break
  fi
done

resolution=$(xrandr | awk '$2 == "connected" && $3 == "primary" { print $4 }' | sed -E 's/\+.+//')

ffmpeg -f x11grab -i ${DISPLAY:-:0} -video_size "$resolution" \
  -framerate 30 \
  -vcodec libx264 \
  -tune zerolatency \
  -crf 18 \
  -b:v 500k \
  -bufsize 300k \
  -vf scale=1280:-1 \
  -f rtsp \
  -rtsp_transport tcp \
  rtsp://127.0.0.1:8554/stream &
  
ffmpegPid=$?

docker logs -f "$rtspContainerId"