kunlang_video/README.md

# Vehicle Video Service

This repository builds and packages the vehicle video service as one deployable stack:

- `vehicle_video_service`: camera capture, RTMP push, MQTT status and record query handling.
- SRS live instance: low-latency live playback over RTMP to WebRTC/WHEP.
- SRS record instance: DVR segment recording and HTTP file serving.
- systemd units for all three services.

## Build

```bash
./scripts/build_video.sh
```

If you need to rebuild SRS from the bundled source:

```bash
./scripts/build_srs.sh
```

SRS is built out-of-tree into:

```text
build/srs/objs/srs
```

## Package

```bash
./scripts/package_release.sh
```

Or build everything and package it in one command:

```bash
./scripts/build_all.sh
```

The output is:

```text
dist/vehicle-video-service-aarch64.tar.gz
```

## Install On Target

```bash
tar -xzf vehicle-video-service-aarch64.tar.gz
cd vehicle-video-service-aarch64
sudo ./install.sh
```

Defaults:

- Install dir: `/opt/vehicle-video-service`
- Record dir: `/media/record`
- Runtime user: `$SUDO_USER`

You can override them:

```bash
sudo INSTALL_DIR=/opt/vehicle-video-service SERVICE_USER=aiec ./install.sh
```

## Services

```bash
systemctl status vehicle-video-srs-live.service
systemctl status vehicle-video-srs-record.service
systemctl status vehicle-video-service.service
```

The application reads `config.json` next to the executable at:

```text
/opt/vehicle-video-service/bin/config.json
```

## Web Configuration

The service includes a small built-in configuration page:

```text
http://<device-ip>:18080
```

Default login:

```text
admin / admin123
```

The page can edit camera channels, live/record switches, SRS ports, record path, MQTT settings, and the management page port. Saving writes `config.json` and regenerates SRS `live.conf` / `record.conf` under the configured SRS root. Restart the related services after saving for runtime changes to take effect.