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LNVR

A lightweight network video recorder for Linux with a Blue Iris style interface. Records RTSP/ONVIF cameras, webcams and video files, detects motion, and lets you watch live or scrub through recording

Screenshots

Description

LNVR – Network Video Recorder for Linux

LNVR turns a Linux PC into a video recorder for your IP cameras. It has the look and workflow of Feniks Nvr: a live grid of all cameras, a column of motion alerts with pictures, a yellow timeline you can click to play back any moment, and a status bar with disk, CPU and memory. Everything runs locally; no cloud account, no subscription.

Features

• Cameras – anything FFmpeg can open: RTSP / ONVIF IP cameras (H.264 and H.265), USB webcams, HTTP streams and video files. ONVIF discovery finds cameras on your network and fetches their stream addresses; brand presets fill in the URL for Hikvision, Dahua, Reolink, Tapo, Amcrest, Axis, Ubiquiti, Foscam and others.
• Recording – continuous 24/7 or only on motion, with pre- and post-seconds. Video is stored as it comes from the camera, without re-encoding, in plain MP4 files: one folder per camera, one per day.
• Motion detection – done by FFmpeg filters on a tiny copy of the picture, so it costs almost no CPU. Sensitivity, minimum size and ignore masks (drag rectangles on the picture) per camera.
• Live view – every camera in a grid, or one large with the others in a strip. Sub-second latency, audio, snapshots, full screen, keyboard shortcuts.
• Playback – click anywhere on the timeline, 0.5x–8x speed, previous / next alert, export any range as an MP4 without re-encoding.
• Alerts – every motion event with a picture, filterable by camera and day.
• Storage management – keep N days and/or at most N GB; in motion mode, recordings that contain no motion are removed automatically.
• Remote access – the interface is a web app: open it from any computer or phone on your network (optional password).
• Hardware acceleration – NVIDIA (CUDA / NVENC), VA-API (Intel / AMD) and Quick Sync for decoding and for the rare cases that need transcoding.
• Desktop app – native window, tray icon, optional motion notifications, "start when I log in". Closing the window stops recording; or turn on close-to-tray to keep recording in the background.

Install

Needs python3 (3.10 or newer) and ffmpeg:

sudo apt install python3 ffmpeg

Then either run the AppImage (one file, no installation):

chmod +x LNVR-1.0.0-x86_64.AppImage
./LNVR-1.0.0-x86_64.AppImage

or install the package on Debian, Ubuntu or Linux Mint (adds LNVR to the menu):

sudo apt install ./LNVR-1.0.0-amd64.deb

First steps

1. Open Settings → Cameras and click Find cameras (ONVIF), or Add camera and pick a brand preset, then fill in user, password and IP.
2. Test connection shows a picture and the stream format. Choose the recording mode, adjust motion detection on the picture, Save.
3. Back on Live the camera appears in the grid. Yellow bars on the timeline are recordings; orange marks are alerts. Click them to play back.

Tip: also enter the camera's sub stream (low resolution). It is used for live view and motion detection, which saves CPU; the main stream is what gets recorded.

How it works

One ffmpeg process per camera records, streams to the browser, takes snapshots and measures motion. A small Python service (standard library only) supervises those processes, indexes finished recordings into SQLite, applies retention and serves the interface on port 12253. The desktop app is an Electron shell around that service.

Data lives in ~/.local/share/lnvr (settings, index and recordings). The recording folder can be moved to another disk in Settings → Storage.

Notes

• H.264 cameras play in every browser; H.265 cameras are converted to H.264 for live view unless the browser can decode HEVC.
• Camera audio is converted to AAC (64 kb/s mono).
• Not included yet: notifications by e-mail / Telegram, object detection, PTZ, schedules, multiple users, cloud upload.

Inspired by Feniks, Blue Iris and camera.ui. MIT licensed. Built with Claude Code, Python, FFmpeg and Electron.

Downloads

• LNVR-1.0.0-amd64.deb — Linux, 71.9 MB
• l_nvr.tar.gz — Source, 703.1 KB

What's new

v 1.0.0.

Original prompt(s)

Prompt 1

1. Look at my NVR project: https://github.com/mehmetgoren/feniks
    * It is based on microservice architecture and complicated, we need a much simplier application. But You can use many code&concept from Feniks

3. It should be installed by a single file. Easy installation and easy use.

2. init git and make first commit

3. kill 8090. I added new camera, here is the address: "rtsp://:@192.168.68.249/live0". Do detailed Q/A testing and fix the issues/ errors/ bugs

4. logout doesnt work and I see only black screen instead of my eufy camera stream

5. commit changes

6. ok, lets convert this app to a desktop app by Electron https://www.electronjs.org/

7. kill current app: http://localhost:8080/

8. kill again and remove non desktop installation file

9. lets change its default port from 8080 to 12253

10. or suggest me better port number

11. kill 8080 again

12. give me the script which kill 8080 and 12253 and all dependent process. add this script ro project

13. when user clos the application, kill all processes application use. just like those script

14. but after closing the app, I can see streaming from the web (http://localhost:8080/) ?

15. http://localhost:8080/ still running ?

16. kill it

17. commit changes

Tags: cctv, electron, ffmpeg, ip camera, linux, motion detection, nvr, onvif, rtsp, surveillance

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