The system sends compressed snapshots or short, optimized video clips rather than constant, high-definition streaming, saving data.

The camera monitors a physical space. It utilizes built-in pixel-change detection, Passive Infrared (PIR) sensors, or AI-driven computer vision (like human or vehicle detection) to identify an event.

If you want to build your own IP camera Telegram alert system, here is a universal guide using the popular open-source tool motioncam-alerts .

Always use a private channel for surveillance to prevent unauthorized access.

Save this as telegram_cam.py :

Sending too many photos in a short burst can cause Telegram to temporarily block the bot. To fix this, set a "cooldown" period (e.g., 30 seconds) between alerts.

Add your bot as an administrator of that channel. Find the Chat ID: Get the channel's unique numerical ID.

| Problem | Diagnosis | Solution | | :--- | :--- | :--- | | Bot sends "Bad Request: chat not found" | You used the channel name (e.g., @MyCam ) but the bot isn't admin. | Add bot as admin, then use numeric Chat ID (e.g., -100123456 ). | | Video sends but no thumbnail | Telegram requires video under 50MB. | Reduce video length to 10 sec or lower resolution to 720p. | | Motion detection works but no alert | Your middleware can't reach Telegram due to firewall. | Check outbound ports 443 (HTTPS). Use proxy if in China/Iran. | | Camera sends 10 alerts per minute | Sensitivity too high. | Add a cooldown timer in your script (e.g., wait 60 sec after each alert). |

A: No. If your script is running on a local network (like a Raspberry Pi) and it is sending messages out to Telegram, your camera’s feed stays inside your home network. The outgoing connection does not require opening inbound ports, which is much safer.

As noted in, certain setups, particularly those involving public-facing Raspberry Pis, can be insecure if not properly configured.

The NVR or camera firmware packages this media file along with a text message (e.g., "Motion detected at Front Door - 14:32" ). It then sends an HTTP POST request to the Telegram Bot API endpoint: https://telegram.org /sendPhoto or /sendVideo .