[Unit]
Description=Camera Stream (FFmpeg -> MediaMTX)
After=network.target mediamtx.service
Requires=mediamtx.service

[Service]
ExecStart=/usr/bin/ffmpeg -rtsp_transport tcp \
-i __CAM1_SOURCE_RTSP__ \
-an \
-c:v libx264 \
-preset ultrafast \
-tune zerolatency \
-pix_fmt yuv420p \
-profile:v high \
-level 4.1 \
-b:v 3500k \
-maxrate 4500k \
-bufsize 7000k \
-g 60 \
-keyint_min 60 \
-sc_threshold 0 \
-rtsp_transport tcp \
-f rtsp rtsp://127.0.0.1:8554/cam1

Restart=always
RestartSec=5

[Install]
WantedBy=multi-user.target