DVRs, NVRs, and TVI DVRs will all record surveillance camera footage onto a hard drive, allow you to watch your camera on a monitor or TV, and put your camera’s video online so you can watch it on your computer, phone, or tablet. They only differ by resolution and what type of cameras they record.

 

DVR( Digital Video Recorder ) 

The DVR is intended to work with standard analog security cameras, HDSDI cameras and HDCVI cameras.  This doesn’t mean that every DVR works with all of these cameras.  Unlike the other video recorder options, there are actually three sub-categories of digital video recorders.  These categories simply line up with the previously mentioned types of security cameras.  Standard analog cameras are intended to be paired with standard analog DVRs just as HD-SDI and HD-CVI cameras are intended to be paired with their corresponding DVRs.

 

digital video recorder (DVR) is an electronic device that records video in a digital format to a disk drive, USB flash drive, SD memory card, SSD or other local or networked mass storage device. The term includes set-top boxes with direct to disk recording, portable media players and TV gateways with recording capability, and digital camcorders. Personal computers are often connected to video capture devices and used as DVRs; in such cases the application software used to record video is an integral part of the DVR. Many DVRs are classified as consumer electronic devices; such devices are sometimes referred to as personal video recorders (PVRs).

NVR

The NVR is paired with IP/network security cameras.  There are two different kinds of network video recorder, but don’t worry, they’re both still used with IP cameras.  The first type, and much more common, requires that you connect your IP cameras to your router or a switch.  This will mean using the search function on the NVR to “ping” the cameras and then add them to the NVRs device list to begin viewing.  While this is not a very complicated step, it may be one you don’t feel like taking.  In that case, the second option is to go with an NVR that has built in network or PoE (power over Ethernet) ports.  This will allow you to connect your IP cameras directly to the back of your NVR just as you would with a DVR.  This will remove the step of having to add them manually to a device list, and it will remove all worries of ensuring that they are connected to your network properly.

 

network video recorder (NVR) is a software program that records video in a digital format to a disk drive, USB flash drive, SD memory card or other mass storage device. An NVR contains no dedicated video capture hardware. However, the software is typically run on a dedicated device, usually with an embedded operating system. Alternatively, to help support increased functionality and serviceability, standard operating systems are used with standard processors and video management software. An NVR is typically deployed in an IP video surveillance system.

NVR home surveillance systems are generally wireless, tend to be easy to set up, can be accessed through a web browser, and allow the user to be notified by email if an alarm is triggered.

NVR Vs DVR 

Network video recorders are distinct from digital video recorders (DVR) as their input is from a network rather than a direct connection to a video capture card or tuner. Video on a DVR is encoded and processed at the DVR, while video on an NVR is encoded and processed at the camera, then streamed to the NVR for storage or remote viewing.Additional processing may be done at the NVR, such as further compression or tagging with meta data.

NVRs are like DVRs, except they record in HD. You can only record IP Cameras with a NVR.

Whereas in a traditional DVR, the video files are encoded (changed from video feeds to files) in the DVR; with NVRs, the video is encoded and processed in the IP Camera and then sent to the NVR to be saved, viewed, and stored. NVRs do not have video capture cards but usually have sophisticated (or multiple) Ethernet or wireless ports.

Often NVRs are mistakenly called DVRs, but they are different.

NVRs work with IP (Network) Cameras; rather than BNC analog (standard definition) security cameras.

TVI DVRs – HD over Analog Cables

TVI is a HD over BNC cable solution (the cable used by old CCTV systems). TVI recorders (TVI DVRS) are Backward Compatible with Analog Cameras – if you plug an analog camera into a TVI recorder it will record in analog. TVI is perfect for upgrading to HD if you have already run BNC cable, but will not replace IP cameras as the dominant cameras of the future.

TVI recorders can accept signal from TVI cameras (SCW, Samsung, TVT, and Hikvision make TVI cameras) or Analog cameras. TVI is a transitional technology to help people with already existing cable get higher resolutions. All new installations should use IP cameras and NVRs as IP can already do 5x the resolution as TVI and IP cameras are significantly easier to install.

Hybrid Video Recorder ( HVR) 

The Hybrid recorder is quickly growing in popularity because of it’s versatility.  Hybrid video recorders (HVR) are compatible with both standard analog cameras and IP/network cameras.  The HVRs can be a little misleading at first.  An 4, 8 or 16 channel Hybrid aren’t really 4, 8 or 16 channel video recorders.  You’ll want to double check, but most sellers of these recorders advertise them in the same way.  The channel quantity that’s listed is almost always the channel quantity for each type of camera the recorder is compatible with.  What we mean is that an 8 channel HVR is actually 16 (8 analog and 8 IP).  If I’m still doing a bad job of explaining this, you’re getting twice as many channels as is being advertised in most cases.

Now it’s not just the fact that you get a lot for what you pay for that makes them so attractive to consumers.  If you’re only in the market for an 8 channel DVR, it still makes sense to purchase an 8 channel HVR even though there’s really 16 channels.  You can connect perfectly acceptable analog cameras to the HVR with Cat5e/Cat6 and baluns initially and years down the road when you’re looking to upgrade your system, it’ll only be a matter of replacing the cameras instead of a DVR and all of your cable.  Depending on the size of your system, this can save you thousands of dollars on the upgrade.

Tribrid Security DVR-

“Tribrid” digital video recorders (DVR), as they’ve come to be known, aren’t exactly a new thing.  Previous to the release of Tribrid DVRs, there were Hybrid DVRs.  If you recall from previous articles, Hybrid’s are capable of streaming and recording both standard analog and IP/network cameras.  The Tribrid simply introduces the ability to now have HDCVI cameras in addition to those analog and IP cameras.

Ease of Use

Using a Tribrid DVR is no different than using any other DVR or NVR.  The graphic user interface (GUI) and features will all be identical.  The only real difference is that the unique features that distinguish a DVR from an NVR will all be on the same unit.  This may mean some added menu options or inputs, but certainly no added confusion.

How it Works

Every channel on the Tribrid can be configured for Analog, HDCVI, or IP with the simple click of a button.  After selecting the channel type, connect your cameras to the video inputs on the back of the unit, or connect them to your network if you’re using IP cameras.  Your cameras that you have hardwired to the DVR will begin streaming and recording immediately.  Your IP cameras simply need to be added to the device list.  This is done in the same fashion as if you were using an NVR.

Everyone should be considering a Tribrid

Other than the Hybrid DVR, the Tribrids are just about the first thing in this entire industry to be even close to backwards compatible.  In the past, upgrading from one type of system to another always meant swapping out your video recorder in addition to your cameras.  For this reason, it gets expensive pretty quick to upgrade; having a DVR that’s compatible with every type of camera currently available, regardless of type, should seem like a no-brainer.  This puts you in a perfect position to either upgrade everything all at once, or piece it out one thing at a time.