DW Witness™

Convert the camera on a smartphone or tablet into a portable high-quality surveillance camera 
  • Turn your mobile device or tablet into a powerful high-quality surveillance camera
  • Connect the application to a VMAX® IP G4™ NVR or DW Spectrum® IPVMS system
  • Free iOS and Android app
  • Provides personal security and safety as a portable camera
  • Stream and record live footage from your phone or tablet directly to your security recorder
  • Setup recording parameters for your DW Witness camera from the NVR or server, like any other camera
  • Supports Front and Rear Cameras
  • Video Resolution: 1080p, 720p, 480p or 240p (Resolution of Kitkat: 480p, 240p)
  • Frame Rate: 30fps, 25fps, 15fps or 5fps (Frame of Kitkat: 15fps, 5fps)
  • Flash Control: On or Off
  • Transmits the smartphone or tablet’s current location


Remote connect Transmit video to your DW Spectrum system or VMAX IP Plus NVR, Turn your camera into a surveillance camera
Mobile Apps Features
Onscreen help Embedded tutorials and tips
Audio Recording With VMAX IP Plus NVRs
Flash control On/off
Framerate DW Spectrum: 15fps, VMAX IP Plus: 30fps, 25fps, 15fps, 5fps
Video resolution DW Spectrum: 720p, VMAX IP Plus: 2.1MP/1080p, 720p, 480p, 288p
App size iOS: 16.7MB
Requirements At Least One Available Channel in the VMAX IP Plus NVR, DW Witness Plug-in installed on the DW Spectrum system, One available recording license in the DW Spectrum system, Stable Network Connectivity, Supports rear-facing and front-facing cameras, Transmits iOS's device current location (Requires firmware or higher)
Supported OS Tested and supported Android OS: Version 5.0(Lollipop) or higher, Tested and supported iOS: 9.0 or higher
Compatible Recorders VMAX IP Plus NVRs (DW-VP)
Video Operating System Android, iOS, IP

System Requirements

  • Compatible with Android devices running Android 4.4 or higher.
  • Compatible with iPhone, iPad, and iPod touch running iOS 8.0 or higher. Compatible with iPhone, iPad, and iPod Touch.
Supported NVRs:
  • VMAX IP Plus™ PoE NVRs (Requires firmware v1.1.7.5 or higher).
Minimum Requirements: 
  • At least one available channel on the NVR side.
  • Network connectivity between smartphone/tablet and NVR.


Title Type
Client and App Compatibility Chart
pdf Download


Title Type Release Notes Version Update Date Compatibility Size
DW Witness Plugin for Linux v5.0.0.35746 so v5.0.0.35746 10/21/2022 0.21 MB Download
DW Witness Plugin for Windows v5.0.0.35746 dll v5.0.0.35746 10/21/2022 0.09 MB Download

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