HD-CVIHD-CVI CCTV Technology
Commonly referred to as: HD-CVI, HD CVI, CVI, CVI HD
High-Definition Composite Video Interface (HD-CVI) is a proprietary HD Analog technology developed by the Chinese security product manufacturer, Dahua. HD-CVI solutions are capable of transmitting HD video over standard analog coaxial cabling up to 1300’ (1080p) and 1600’ (720p). HD-CVI recorders are compatible with all analog and like-branded HD-CVI cameras, in limited configurations.
HD-CVI offers comparable resolution to other HD CCTV formats, but a lower quality image than both HD-SDI and HD-TVI technology. The technology is capable of long video transmission distances (second only to HD-TVI), but is limited in both camera compatibility and configurability – and currently offers no IP camera support.
- What You Need to Know:HD-CVI meets the promise of delivering HD resolution video over coaxial cable over long transmission distances. However, HD-CVI provides a lower image quality and is limited in both camera compatibility and configuration flexibility.
| HD-CVI Capabilities |
| Max Resolution |
1080p |
| Transmission Distance |
Coaxial Cable (RG59) |
1300’ (720p), 1600’ (1080p) |
| Twisted Pair (CAT5) |
650’ |
| DVR Input Compatibility |
Analog |
All cameras, on limited channels, in limited configurations |
| HD |
Like-branded HD-CVI cameras, on any channel, in any configuration |
| IP |
N/A |
| Standard Protocol(s) |
HDCVI 2.0 |
HD-CVI Features & Benefits
- Supports up to 960H Analog, 720p and 1080p HD-SDI cameras
- Transmits with zero latency over standard coax cabling (smooth motion)
- Backwards compatible with all analog cameras and standard coaxial cabling
- Features digital zoom capabilities in both live and playback mode
- Hybrid recorder accepts select standard definition analog (CIF-960H), and like-branded HD-CVI (720p & 1080p) cameras, in limited configurations
HD-CVI Limitations
- Currently limited to 1080p full HD resolution
- Only compatible with like-branded HD-CVI cameras
- DVR hybrid configurations limited
Comparison: HD-CVI vs. Other HD Analog Formats
- Longer transmission distances than HD-SDI
and AHD
- Comparable resolutions, lower image quality
- Slightly shorter than HD-TVI
- Limited compatibility w/ analog & HD cameras (similar to HD-SDI and AHD, inferior to HD-TVI)
- Limited flexibility for DVR channel configurations (similar to HD-SDI and AHD, inferior to HD-TVI)
