Product Overview: Professional H.265/H.264 CVBS to IP Video Encoder with Loop-Out

The DV2158 is a state-of-the-art, professional-grade video encoder designed to bridge the gap between legacy analog video systems and modern IP-based network infrastructure. Its primary function is to capture high-quality standard-definition (SD) video from a Composite Video Broadcast Signal (CVBS) source, compress it with high efficiency using the latest codecs, and stream it over Ethernet/IP networks using a vast array of standard protocols. With its integrated CVBS loop-out, robust encoding capabilities, and versatile streaming options, the DV2158 is an indispensable tool for modernizing existing CCTV systems, enabling live internet broadcasting, and facilitating large-scale video distribution.

This device is engineered for reliability and flexibility, supporting simultaneous multi-stream, multi-protocol output, making it suitable for a wide spectrum of applications—from security and surveillance to live event streaming and IPTV services. It effectively future-proofs analog investments by integrating them seamlessly into an IP ecosystem, allowing for remote monitoring, cloud recording, and centralized management.

Detailed Features & Capabilities

1. High-Quality Analog Video Acquisition & Loop-Out

• CVBS Input: Features a dedicated CVBS (Composite Video) input interface, capable of capturing a high-quality SD signal with a maximum resolution of 720x576 (PAL) or 720x480 (NTSC), at a smooth 60 fields per second.

• Integrated Loop-Out: The built-in CVBS output port provides a pristine, unprocessed pass-through of the incoming video signal. This is critical for local monitoring on a standard display, for daisy-chaining the video signal to another analog device (like a legacy DVR or another monitor), and for verifying signal integrity at the source without any network dependency.

2. Advanced Multi-Stream, Multi-Codec Video Encoding

• Triple-Stream Encoding: The DV2158 can generate up to four independent video streams simultaneously—one primary (main) stream and three secondary (sub) streams. This allows for flexible deployment scenarios, such as using the main stream for high-quality recording, a secondary stream for low-bandwidth remote mobile viewing, and another for real-time analysis.

• Next-Generation Codec Support: It supports the most efficient video compression standards:

  • H.265 (HEVC): Significantly reduces bandwidth and storage requirements by approximately 50% compared to H.264 while maintaining the same video quality, ideal for limited bandwidth environments.

  • H.264 (AVC): The industry-standard codec, offering an excellent balance of quality, compression, and compatibility with a vast range of players and VMS/NVR systems.

  • MJPEG (Motion JPEG): Provides low-complexity, frame-by-frame compression, enabling ultra-low-latency playback directly in web browsers on computers and mobile devices without specialized client software.

• Extensive Encoding Flexibility:

  • Resolution & Frame Rate: Offers a comprehensive selection of encoding resolutions, from full SD (720x576) down to sub-QVGA sizes, with a configurable frame rate from 5 to 60 FPS.

  • Bitrate Control: Supports multiple bitrate control modes: CBR (Constant Bitrate) for predictable bandwidth usage, VBR (Variable Bitrate) for optimized quality, and Strong CBR for strict bandwidth management.

  • Image Quality Tuning: Users can fine-tune the output with adjustable GOP (Group of Pictures) structures and a sliding scale for image quality, from "Lowest" to "Best."

3. Comprehensive Audio Integration and Processing

• Analog Audio Input: A 3.5mm analog audio input jack allows for the simultaneous capture of audio alongside the video, creating a complete AV stream.

• High-Fidelity Audio Codecs: Supports a wide range of audio compression formats, including AAC, AAC+, AAC++ for high efficiency, and MP3, MP2, AC3, and Opus for broad compatibility.

• Advanced Audio Features: Includes digital volume control, configurable denoising filters, and sample rate control. Crucially, it supports G.711 audio over both its proprietary PTE protocol and standard RTSP, ensuring clear voice transmission for intercom or monitoring applications.

4. Universal Network Streaming & Protocol Support
The DV2158 acts as a powerful streaming source, supporting virtually every major protocol used in video delivery today:

• For Live Streaming & Broadcasting: RTMP/RTMPS to push streams directly to platforms like YouTube, Facebook Live, or local media servers (e.g., Wowza, Nginx-RTMP). HTTP-FLV, HLS, and MP4 for adaptive bitrate streaming directly playable in web browsers.

• For IP Surveillance & VMS Integration: RTSP/RTP for easy integration with professional Video Management Software (VMS) like Milestone, Genetec, and Blue Iris. Full ONVIF profile S compliance ensures seamless discovery and connection with thousands of ONVIF-conformant NVRs.

• For Low-Latency & Network Distribution: UDP Multicast & RTP Multicast for efficiently distributing a single stream to multiple clients on a local network, perfect for IPTV systems or large-scale monitoring walls. SRT for secure and reliable streaming over unpredictable networks like the public internet.

• Proprietary Low-Latency Protocol: The PTE protocol is optimized for the local area network (LAN), achieving remarkably low end-to-end latency of just 80-200 milliseconds, which is essential for real-time interactive applications.

5. On-Screen Display (OSD) and Customization

• Flexible OSD Overlays: Allows users to overlay critical information directly onto the video stream. This includes static text, time/date stamps, and even custom images or logos.

• Multiple Zones & Control: Supports up to 4 independent OSD zones. Users have precise control over the position (X, Y coordinates), font size (8-72), font color (RGB), background, and transparency of each element.

• Scrolling Text: Enables the display of dynamic information, such as alerts or headlines, via a scrolling text marquee.

Technical Specifications

Applications & Use Cases

The DV2158's versatility makes it suitable for a multitude of industries and scenarios:

• Video Surveillance Modernization: Integrate existing analog CCTV cameras into new or existing IP-based security systems. Connect to ONVIF-compliant NVRs for centralized recording and management, enabling remote viewing from anywhere in the world.

• Live Event & Conference Broadcasting: Capture video from analog cameras (e.g., handheld camcorders, older production gear) and stream live to the internet via RTMP to platforms like YouTube or Facebook. Use multicast for distributing the feed to multiple displays throughout a venue.

• Internet Protocol Television (IPTV): Serve as a reliable source encoder for IPTV networks in hotels, hospitals, corporate campuses, and hospitality venues. The UDP/RTP Multicast functionality allows a single encoder to serve an unlimited number of set-top boxes within the local network.

• Distance Learning & Telemedicine: Enable low-latency, real-time video communication for interactive applications. The PTE protocol and MJPEG codec ensure minimal delay, making interactions more natural.

• Retail & Business Intelligence: Stream video from analog point-of-sale (POS) or overview cameras to analytics servers for people counting, queue management, and behavioral analysis.

• Religious & Community Broadcasting: Easily set up live streams for church services, community meetings, or local events using existing analog equipment.

Configuration Options & Selectable Features

The DV2158 is highly configurable. Key selectable options include:

• Primary Codec Selection: Choose between H.265, H.264, or MJPEG for each stream independently.

• Streaming Protocol Priority: Select the primary protocol for delivery (e.g., RTSP for VMS, RTMP for live broadcast, or Multicast for IPTV).

• ONVIF Service: Enable or disable the ONVIF service for compatibility with network video recorders.

• Audio Routing & Codec: Choose which audio source to encode and select the optimal audio codec for the application (e.g., AAC for quality, G.711 for compatibility).

• Low-Latency Mode: Activate the PTE protocol for scenarios where minimal delay is critical.

• Multicast Activation: Enable and configure multicast IP addresses for one-to-many video distribution.

• OSD Profile: Create and save multiple OSD layouts that can be enabled or disabled as needed.

In summary, the DV2158 Video Encoder is a powerful, flexible, and essential solution for any organization seeking to leverage their analog video equipment in a digital world, providing broadcast-quality streaming, robust integration, and unparalleled control.