reolink-ha-bridge

Standalone Python script to download Reolink camera recordings filtered by AI detection type (person, vehicle, pet, motion). Designed for Home Assistant integration via shell_command.

No dependencies — uses only Python 3.9+ stdlib.

Why?

The native Reolink HA integration doesn't support downloading recordings filtered by AI detection type. This script talks directly to cameras via their HTTPS API.

Install

With uvx (no install needed):

uvx reolink-download --host 192.168.1.100 --password SECRET --type person --since 2h

Or install globally:

uv tool install reolink-download

Or just run the script directly — it has no dependencies:

python3 reolink_download.py --host 192.168.1.100 --password SECRET --type person --since 2h

Usage

reolink-download \
  --host 192.168.1.100 \
  --password SECRET \
  --type person \
  --since 2h \
  --max 3 \
  --stream sub \
  --output /tmp/downloads \
  --manifest

Arguments

Examples

# Person detections from last 2 hours
python3 reolink_download.py --host 192.168.1.100 --password PASS --type person --since 2h

# Person + vehicle from last 4 hours, max 5 files
python3 reolink_download.py --host 192.168.1.100 --password PASS --type person,vehicle --since 4h --max 5

# All recordings from last day, sub stream for Telegram
python3 reolink_download.py --host 192.168.1.100 --password PASS --type all --since 1d --stream sub

# With manifest and cleanup (for HA integration)
python3 reolink_download.py --host 192.168.1.100 --password PASS --type person --since 2h \
  --output /config/www/reolink_downloads --manifest --cleanup 60

Output

• Downloaded .mp4 files: {trigger}_{YYYYMMDD}_{HHMMSS}_{HHMMSS}.mp4 (e.g. person_20250219_143000_143500.mp4)
• File paths printed to stdout (one per line) for script consumption
• Status messages printed to stderr
• Exit code 0 on success, 1 on error
• With --manifest: writes manifest.json:

{
  "camera": "192.168.1.100",
  "type": "person",
  "files": ["/path/to/person_20250219_143000_143500.mp4"],
  "count": 1
}

Testing

E2E tests require a real camera. Set env vars (e.g. via .envrc):

export REOLINK_HOST=192.168.1.100
export REOLINK_PASSWORD=SECRET

Run tests:

python3 -m unittest test_e2e -v

Tests skip automatically when env vars are missing. CLI validation tests always run (no camera needed).

How it works

1. Login to camera via POST /cgi-bin/api.cgi?cmd=Login
2. Search recordings via POST /cgi-bin/api.cgi?cmd=Search
3. Filter by AI type using hex flags in filenames (bit 4:2=person, 4:0=vehicle, 5:3=pet, 6:3=motion)
4. Download files via GET /cgi-bin/api.cgi?cmd=Download
5. Logout via POST /cgi-bin/api.cgi?cmd=Logout

Filename hex flag parsing

Reolink encodes detection types in recording filenames:

RecS07_20250219_111146_111238_0_A714C0A000_21E67C.mp4
                                 ^^^^---
                                 hex flags field (second-to-last underscore part)

Nibble at offset 4: bit 2 = Person, bit 0 = Vehicle
Nibble at offset 5: bit 3 = Pet
Nibble at offset 6: bit 3 = Motion

Home Assistant Integration

Setup

1. Copy reolink_download.py to /config/scripts/ on your HA instance
2. Add reolink_password to secrets.yaml
3. Add a shell_command and automation (see below)
4. Restart HA

Example shell_command

shell_command:
  reolink_download: >
    python3 /config/scripts/reolink_download.py
    --host 192.168.1.100
    --password '{{ states("input_text.reolink_password") }}'
    --type {{ type }}
    --since {{ since | default("2h") }}
    --max {{ max | default("3") }}
    --stream sub
    --output /config/www/reolink_downloads
    --manifest
    --cleanup 60