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Bosch DVR45104A050 400 Series H.264 Digital Recorder


Quick Overview

400 Series H.264 Digital Video Recorder. 4CH 500GB
Model Number: Bosch DVR-451-04A050 S

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Bosch DVR45104A050 400 Series H.264 Digital Recorder

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Bosch Security Systems Products

Bosch 4 Channel Digital Video Recorder

DVR-451-04A050 Key Features


• 4-Channel real-time H.264 recording
• View and record video in CIF, 2CIF, or 4CIF resolution
• Built-in web viewer for remote viewing, playback, control, and configuration
• Supports VGA and analog monitor output (up to 1280x1024)
• Dual streaming for local recording and remote viewing


DVR-451-04A050 Description


The Bosch Video Recorder 400 Series is a 4 channel digital recorder that uses the latest H.264 compression technology. With a built-in web server for browser-based video management, the 400 Series is a fully integrated, stand-alone video solution that's ready to go, straight out of the box.

The 400 Series features a highly reliable embedded design that minimizes maintenance and operational costs. The unit has four audio inputs and a DVD writer.

DVR-451-04A050 System overview

The Bosch 400 Series takes advantage of the latest H.264 compression technology that allows for more efficient video compression. This reduces the amount of storage and bandwidth needed while also producing better image quality. The 400 Series records multiple video and audio signals while simultaneously providing live multi-screen viewing and playback. Comprehensive search and playback functions provide quick recall and viewing of recorded video.


Ease of use is key to the 400 Series design. Simply connect the cameras, apply power, and the unit begins recording automatically. All recording takes place in the background with no operator intervention required.

The use of H.264 compression reduces the file size of recordings by as much as 30% compared to standard MPEG-4, without sacrificing image quality. The Bosch Video Recorder 400 Series can record at up to 25 (PAL) / 30 (NTSC) images per second, per channel at CIF resolution. Recording at 2CIF and 4CIF resolution is also possible by reducing the recording image rate settings. The recording rate and quality are individually configurable per channel for maximum flexibility.

If required, alarm recordings (input and motion) and continuous recordings can be split over two partitions. An overwrite mode can then be selected separately for each partition.

Dome Control

The 400 Series can control pan/tilt/zoom (PTZ) equipment via RS‑232 and RS‑485 serial communications. PTZ devices, including the Bosch AutoDome Modular and AutoDome Easy II, are supported.


The unit has extensive alarm handling functions and telemetry control. Alarm functions include motion detection in user-definable areas of the image on any camera input.

Local control and operation

The unit can be easily operated and programmed via the on-screen display menu system using either the front panel control keys, the mouse, or the remote control. Two monitor outputs provide full-screen, quad (main monitor only), and sequenced viewing. Looping auto-terminating video inputs and outputs, audio inputs and output, and alarm inputs and outputs are located on the rear panel. The VGA connector provides an output for monitor A (main monitor). A CVBS video output is also provided for monitor B (spot monitor). Monitor A displays live and playback in full-screen or quad digital pictures that can be frozen and zoomed. Monitor B displays live full-screen pictures.

Remote control and operation

Use the Control Center PC software or built-in web application via a network for live viewing, playback, and configuration. The Control Center can also be used with other Bosch products including the 600 Series and the 700 Series. Four users can control the 400 Series simultaneously.

The Bosch 400 Series includes an authenticity check for both local and remote playback, ensuring recording integrity. The Bosch 400 Series Archive Player is provided for playback of secure video files.

Mobile Devices

Real Time Streaming Protocol (RTSP) is supported in the 400 Series. This means that live video streamed from the unit over the internet can be displayed by suitably configured mobile devices.

DVR-451-04A050 Functions

The Bosch 400 Series has the following features:

• 4 looped-through, auto-terminating camera inputs
• 4 audio inputs
• Simultaneous live viewing, recording, and playback
• 10/100Base-T Ethernet port for local or wide area network connection
• RS232 and RS485 serial port for serial communication
• VGA main monitor output plus CVBS for spot monitor
• Numerous VGA output quality settings
• Full-screen and Quad display capabilities in live and playback modes
• Playback one or more channels while showing live pictures of the other channels
• Spot monitor output with sequencing
• Audio output (mono)
• Motion detection
• Multiple search modes including smart search (search for motion within recorded images)
• 4 switching (alarm) inputs and 4 alarm outputs
• Video loss detection
• Audible alarm
• Pan, tilt, and zoom camera control via RS485/RS232
• Supports Bosch and Pelco protocols
• Local archiving via USB
• Local archiving via built-in DVD burner
• Live display support on mobile devices

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