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How to Connect to LILIN IP Camera in C# .NET

Video Capture SDK .Net Media Blocks SDK .Net

Brand Overview

LILIN (Merit LILIN Co., Ltd.) is a Taiwanese professional security camera manufacturer headquartered in New Taipei City, Taiwan. Founded in 1980, LILIN is one of the oldest IP camera manufacturers in the world. The company is known for professional-grade surveillance cameras with distinctive RTSP URL patterns that encode the resolution directly in the URL path.

Key facts:

  • Product lines: Z Series (bullet), S Series (speed dome), D Series (dome), LR Series (IR), P Series (panoramic)
  • Protocol support: RTSP, ONVIF, HTTP/CGI
  • Default RTSP port: 554
  • Default credentials: admin / pass
  • ONVIF support: Yes (most current models)
  • Video codecs: H.264, MJPEG
  • Unique URL pattern: Resolution encoded in RTSP path (e.g., rtsph264720p, rtsph2641080p)

Resolution-Based RTSP Paths

LILIN uses a unique URL pattern where the resolution is encoded directly in the RTSP path (e.g., rtsph264720p for 720p, rtsph2641080p for 1080p). Make sure to use the correct resolution suffix for your camera model.

RTSP URL Patterns

Standard URL Format

LILIN cameras use a resolution-based RTSP path format:

rtsp://[USERNAME]:[PASSWORD]@[IP]:554/rtsph2641080p
Parameter Value Description
rtsph264720p 720p stream H.264 at 1280x720 resolution
rtsph2641080p 1080p stream H.264 at 1920x1080 resolution
rtsph2641024p 1024p stream H.264 at 1280x1024 resolution (note: double-slash in some models)

Camera Models

Model Resolution Main Stream URL Notes
LR7022E4 (IR bullet) 1920x1080 rtsp://IP:554/rtsph2641080p LR series, 1080p
LR7722X (IR bullet) 1920x1080 rtsp://IP:554/rtsph2641080p LR series, 1080p
IPR712M4.3 (PTZ) 1280x1024 rtsp://IP:554//rtsph2641024p IPR series, double-slash path
Z Series (bullet) 1920x1080 rtsp://IP:554/rtsph2641080p Outdoor bullet cameras
D Series (dome) 1920x1080 rtsp://IP:554/rtsph2641080p Indoor/outdoor dome
S Series (speed dome) 1920x1080 rtsp://IP:554/rtsph2641080p PTZ speed dome

Alternative URL Formats

Some LILIN models or firmware versions support these alternative URLs:

URL Pattern Notes
rtsp://IP:554/rtsph2641080p Standard 1080p (recommended)
rtsp://IP:554/rtsph264720p 720p stream
rtsp://IP:554//rtsph2641024p 1024p stream (double-slash, some PTZ models)

Connecting with VisioForge SDK

Use your LILIN camera's RTSP URL with any of the three SDK approaches shown in the Quick Start Guide:

// LILIN LR7022E4, 1080p main stream
var uri = new Uri("rtsp://192.168.1.90:554/rtsph2641080p");
var username = "admin";
var password = "pass";

For 720p access, use rtsph264720p instead of rtsph2641080p.

Snapshot and MJPEG URLs

Type URL Pattern Notes
JPEG Snapshot (VGA) http://IP/getimage?camera=CHANNEL&fmt=vga VGA resolution snapshot
Snapshot by Channel http://IP/getimage[CHANNEL] Replace CHANNEL with camera number
Quick Snapshot http://IP/snap Simple snapshot URL
CGI Snapshot http://IP/cgi-bin/net_jpeg.cgi?ch=CHANNEL CGI-based snapshot
Auth Snapshot http://IP/snapshot.jpg?user=USER&pwd=PASS URL-based authentication
Direct Image http://IP/image/CHANNEL.jpg Direct JPEG image by channel

Troubleshooting

"401 Unauthorized" error

LILIN cameras ship with default credentials of admin / pass. If you have changed the password through the web interface, ensure you update the credentials in your RTSP URL.

  1. Access the camera at http://CAMERA_IP in a browser
  2. Log in with your credentials
  3. Verify the RTSP settings under the network configuration section

Double-slash in RTSP path

Some LILIN models, particularly the IPR PTZ series, require a double-slash (//) before the resolution path. If a single-slash URL fails:

  • Try rtsp://IP:554//rtsph2641024p instead of rtsp://IP:554/rtsph2641024p
  • This is commonly seen with 1024p resolution models

Choosing the correct resolution suffix

LILIN cameras do not use subtype=0/1 like many other brands. Instead, the stream resolution is selected by changing the URL path:

  • rtsph264720p for 720p (1280x720)
  • rtsph2641080p for 1080p (1920x1080)
  • rtsph2641024p for 1024p (1280x1024)

If you specify a resolution your camera does not support, the connection will fail.

Port 554 connection refused

Verify that RTSP is enabled on the camera:

  • Web interface: Check Network > RTSP settings
  • Confirm port 554 is not blocked by a firewall
  • Default RTSP port is 554

FAQ

What is the default RTSP URL for LILIN cameras?

The most common URL is rtsp://admin:pass@CAMERA_IP:554/rtsph2641080p for the 1080p main stream. Replace the resolution suffix (rtsph2641080p) with the appropriate value for your camera's resolution.

Do LILIN cameras support ONVIF?

Yes. Most current LILIN models support ONVIF, which provides an alternative method for discovering and connecting to the camera without needing brand-specific URL patterns.

Why does LILIN use a different RTSP URL format?

LILIN encodes the resolution directly in the RTSP path rather than using channel/subtype parameters like Dahua or Hikvision. This is a proprietary design choice. The format is straightforward once you know which resolution suffix your camera model supports.

What are the default login credentials for LILIN cameras?

The default username is admin and the default password is pass. It is recommended to change these credentials after initial setup for security purposes.