Simulated multi-camera DVR system. Inputs: MP4 files. Outputs: RTSP, HLS, WebRTC via MediaMTX.

• Docker + docker-compose
• Local ports open: 8554 (RTSP), 8888 (HLS), 8889 (WebRTC), 8189/udp (ICE)

Real flow:

• Analog cameras → DVR encoder → RTSP streams
• Gateway converts RTSP to WebRTC/HLS for browsers

Simulation flow:

• Four MP4 files act as cameras
• FFmpeg loops and pushes RTSP to MediaMTX
• MediaMTX exposes RTSP, generates HLS on demand, serves WebRTC pages

• MediaMTX: unified media server
• cam1..cam4: ffmpeg publishers looping files in ./videos
• Paths: cam1, cam2, cam3, cam4

Start services:

docker compose up --build

Stop and remove:

docker compose down -v

RTSP (VLC / ffplay):

rtsp://localhost:8554/cam1
rtsp://localhost:8554/cam2
rtsp://localhost:8554/cam3
rtsp://localhost:8554/cam4

HLS playlists:

http://localhost:8888/cam1/index.m3u8
http://localhost:8888/cam2/index.m3u8
http://localhost:8888/cam3/index.m3u8
http://localhost:8888/cam4/index.m3u8

WebRTC pages:

http://localhost:8889/cam1/
http://localhost:8889/cam2/
http://localhost:8889/cam3/
http://localhost:8889/cam4/

• Looped playback via -stream_loop -1.
• ./videos is mounted read-only.
• HLS root (http://localhost:8888/) returns 404; use playlist URLs.
• Replace localhost with host IP for LAN clients; open firewall ports.
• For recording or auth, extend mediamtx.yml using upstream sample config.
• For recording or auth, extend mediamtx.yml using upstream sample config.