Set up RTSP - Qualcomm Dragonwing Documentation

Download the MediaMTX utility to set up an RTSP listening server. The following steps are verified for MediaMTX version v1.11.3_linux_arm64v8, available at mediamtx_v1.11.3_linux_arm64v8.tar.gz.

Unzip the downloaded archive and edit the mediamtx.yml file to enable RTSP streaming on port 8901.

###############################################
# Global settings -> RTSP server

# Enable publishing and reading streams with the RTSP protocol.
rtsp: yes

# List of enabled RTSP transport protocols.
# UDP is the most performant, but doesn't work when there's a NAT/firewall between
# server and clients, and doesn't support encryption.
# UDP-multicast allows to save bandwidth when clients are all in the same LAN.
# TCP is the most versatile, and does support encryption.
# The handshake is always performed with TCP.
rtspTransports: [udp, multicast, tcp]

# Encrypt handshakes and TCP streams with TLS (RTSPS).
# Available values are "no", "strict", "optional".
rtspEncryption: "no"

# Address of the TCP/RTSP listener. This is needed only when encryption is "no" or "optional".
rtspAddress: :8901

# Address of the TCP/TLS/RTSPS listener. This is needed only when encryption is "strict" or "optional".
rtspsAddress: :8322

Copy the mediamtx.yml file and the mediamtx executable to the device:

scp -P 2222 -o StrictHostKeychecking=no -o UserKnownHostsFile=/dev/null <mediamtx path>/mediamtx root@localhost:/opt

scp -P 2222 -o StrictHostKeychecking=no -o UserKnownHostsFile=/dev/null <mediamtx path>/mediamtx.yml root@localhost:/opt

Open a new SSH shell and run the mediamtx utility:
```
cd /opt
chmod +x mediamtx
./mediamtx
```
Start an RTSP stream on your host computer on localhost at port 8901. The following example uses FFmpeg to capture input from a connected webcam and send it as an RTSP stream. If FFmpeg is not installed, download it from the FFmpeg website.
```
ffmpeg -f dshow -video_size 640x480 -i video="Integrated Camera" -framerate 15 -vf format=yuv420p -c:v h264 -f rtsp -rtsp_transport tcp rtsp://127.0.0.1:8901/live1.mkv
```
Verify the RTSP stream output using VLC media player:
1. Open VLC media player.
2. Press Ctrl+N.
3. Enter the URL rtsp://127.0.0.1:8901/live1.mkv in the input bar.
4. Select Play.