Kato KT-HD91 series PTZ Camera for Broadcasting and Video Conference

Main features:

5X/12X/20X optical zoom can be chose ,3.1~8.5Megapixels

HDMI,3G-SDI, USB3.0,IP outputs,UVC control, POE optional

Support H264/H.265 ,MJPEG compression enabling,full hd video stream over RTSP,TCP/IP,HTTP.

Support IR remote control, RS232/485 serial controls

Support VISCA and Pelco P/D protocol

9 preset positions by Visca, 200 preset positions by Pelco

Support desktop Tripod, Pole and ceiling mount


video conference camera church use broadcasting PTZ camera IP camera full hd video conference camera 91R Main features: 5X/12X/20X optical zoom can be chose ,3.1~8.5Megapixels HDMI,3G-SDI, USB3.0,IP outputs,UVC control, POE optional Support H264/H.265 ,MJPEG compression enabling,full hd video stream over RTSP,TCP/IP,HTTP. Support IR remote control, RS232/485 serial controls Support VISCA and Pelco P/D protocol 9 preset positions by Visca, 200 preset positions by Pelco Support desktop Tripod, Pole and ceiling mount Main application: Video conferencing cameras KT-HD91 is widely used in video conferencing, remote education, remote medical, church, accident, court, multimedia, chain store, transportation, airport and other monitor area. Camera KT-HD91YL KT-HD91RL KT-HD91AL Image Sensor 1/2.5″ Image Sensor Effective Pixels 3.10 Megapixels 3.10 Megapixels 3.50 Megapixels Resolution 1080p60/50, 1080i60/50, 1080p30/25 Signal System PAL/NTSC Lens 5X optical zoom f=3.2mm(wide)~14.4 mm(far end) F2~F2.8 12X optical zoom f=3.9mm(wide)~46.8mm (far end) F1.8~F2.8 20X optical zoom f=4.7mm(wide)~94.0 mm(far end) F1.6~F2.8 Horizontal View Angle 84.5°(W)~23.9°(T) 72.5°(W)~6.55°(T) 60.9°(W)~3.2°(T) Pan 355°(max. speed:80°/s) Tilt -30° to +90° (max. speed: 60°/s) Focus System Auto/Manual S/N Ratio ≥50db Preset Position 9 preset positions by IR remote controller, 255 preset positions by Keyboard or PC Minimum Illumination 0.1Lux Exposure Control Auto/Manual/Priority AE/Exposure Compensation/Bright Shutter Speed 1/1~1/10,000s Gain Auto/Manual White Balance Auto/Manual/ATW/One-click/Indoor/Outdoor Image Effect Full color/black and white/Electronic flip Video Output HD HDMI, SDI,USB3.0, IP Other Output Line In Control Protocol SONY VISCA, PELCO P/D Control Mode RS-232C, RS-422/485 Power 12V DC(10.8~13.0V DC) Power Consumption Max. 30W(DC 12V) Operating Temperature 0~40℃ Storage Temperature -20-60℃ Camera Dimensions (L)147 ×(W)147 ×(H)165 mm Weight 870 g Color Black Accessories DC 12V power adapter, IR Remote, Operation manual, RS-232C Cable,HDMI cable, USB Cable , Ceiling bracket Carton Each camera in a small carton, then 4pcs packaged in one large carton. Certificate ISO/CE/FCC/ROSH Warranty 3 years Packaging & Shipping Send us your inquiry here Telemedicine video conference camera church use broadcasting PTZ camera IP camera Our Services FAQ 1. Q: Are you Manufacturer or Trading company? We are manufacturer with R & D, production and marketing of video conference camera with more than 15 years experience. 2.Q: What is your leadtime? Sample order within 24 hours after your payment. Mass production within 3-5 days. DHL/Fedex/UPS etc delivery date around 3 days. 3.Q : What’s your main products? Our products include: SD, HD PTZ Video Conference Cameras, HD Monitor Cameras, Economic High Speed Dome Cameras, IR High Speed Dome Cameras, Intelligent High Speed Dome Cameras, Intelligent IP High Speed Dome Cameras, etc. 4.Do you have your own R & D staff ? Yes, our company has the whole technical department, including research and development, structure, product, PE, can respond quickly for customer support needs. 5.Q: How many years of warranty of your products One years on system component parts and unlimited free technical lifetime support. 6.Q: What resolutions do you have for Broadcasting? 1080i59.94 is workable for your Recording and Broadcasting. 7.Q:Does Dual-stream workable for your cameras? Yes, for most of our IP camera, H.264/MJPEG are workable. USB camera is YUY2,MJPEG. UVC control. Company Information KATO VISION CO.,Ltd,as a professional video conference camera manufacturer which established in 2004,Located in Shenzhen,China, Specialize in video conference R&D,OEM/ODM. Our main products in cluding 4K cameras,SD/HD/USB PTZ video conference camera,Keyboard controller,Microphone etc. They are widely used in Meeting,Medical,SKYPE Telecommunication,Tele-education,School,Government,Chruch,Recording and Broadcasting and so on. With Our strong R&D dept,we’ve got many moulds Design Patent. We also have CE,ROHS,FCC,ISO9001 Certificates. contact us KATO VISION CO., LIMITED Contact: Janey.Guo Skype: sales05kato Whatsapp/wechat:86-13652304159 Address:4/F, Block B, Dexinchang Industrial Park, Qingxiang Rd., Longhua district, Shenzhen 518109, China

Tutorial: How to Stream Live Events with PTZOptics Cameras and the NewTek TriCaster Mini

This tutorial will demonstrate how to use PTZOptics robotic cameras for live productions with the NewTek TriCaster Mini. Pan-tilt-zoom (PTZ) cameras are having a renaissance right now with the advent of smaller, more sensitive HD imaging sensors, and PTZOptics is riding that wave with some of the best and most affordable PTZ cameras on the market.

In this tutorial I’ll demonstrate how, with just a few PTZOptics cameras and a NewTek TriCaster Mini, you can get your live event onto the internet with ease. The PTZOptics cameras also integrate easily with Wirecast, vMix, and other popular streaming solutions, such as the Epiphan Pearl.

Real-World Application: Church Production

To demonstrate this workflow in real-world use, I took the gear to a local church that already has a great broadcast setup. This system consists of a TriCaster Mini, two PTZOptics Full HD cameras, and a PTZOptics Hardware Controller (Figure 1, below). The beauty of having a TriCaster in the system is that the TriCaster software can control the PTZ cameras in case you don’t have the optional hardware controller.

Figure 1. Components of the PTZ capture, control, switching, and streaming system. Click the image to see it at full size.

I’ll demonstrate both setups—with and without the hardware controller–in this tutorial.

For smaller churches, using PTZ cameras instead of a traditional camcorder workflow helps by eliminating the need for camera operators at each camera position. Plus, you can install these compact cameras in hard-to-reach or line-of-sight locations without affecting the audience experience.

Camera Positioning

For this setup, I placed one camera about 50 feet from the TriCaster. The other camera was mounted near the back of house. NewTek offers an HDMI cable that will run a rock-solid signal up to 100 feet.

Controlling the Cameras

Controlling the PTZOptics cameras is as straightforward as it gets. There’s a standard joystick for moving the camera. In the center of the controller, you can use optional buttons to operate iris, focus and zoom. There are additional buttons for functions and programmable presets (Figure 2, below).

Figure 2. Controlling the cameras with the PTZOptics controller and joystick. Click the image to see it at full size.

If you opt to control the cameras with the TriCaster, simply select the gear icon on the camera feed, navigate to the PTZ tab, and choose the appropriate input for your cameras (Figure 3, below). The PTZOptics cameras use the Sony RS232 configuration. Now you can use the PTZ tab in the TriCaster interface to set up preset camera positions that can be quickly accessed by a single operator.

Figure 3. Controlling the cameras with the TriCaster. Click the image to see it at full size.

PTZ Cameras: Are They Right for Live Streaming?


Shop carefully, not only for resolution, remote controls and fluidity of motion, but also for the right control protocol. The choice of control protocol may make the difference between a system that’s a delight to use and one that no one wants to….




How to Integrate PTZ Cameras into Your Live Setup

PTZ stands for “pan/tilt/zoom” and denotes robotic cameras that typically (though not always) have integrated pan/tilt motors and zoom lenses. The Sony EVI series cameras are popular examples. Pan/tilt/zoom cameras may look like outsized surveillance cameras, and in many ways, are like them. They are designed to be installed permanently and can be enclosed in dome housings for protection or aesthetics. However, the benefits of PTZ cameras are that one operator can control multiple cameras, whereas non-robotic cameras require a separate operator for each camera; and they can achieve camera angles not possible with conventional tripod setups.

Sony EVI-D80 PTZ Camera

PTZ cameras are commonly found in settings such as academic lecture halls and houses of worship. They are sometimes employed for video conferencing where camera control or multiple camera angles are required. PTZ cameras are also a great option for live events in venues where cameras can be permanently installed or where mounting spots are available. This last factor will be our focus here.

Live Production

The operation of PTZ cameras used in a video production environment can be broken into two concerns: camera control and video switching.

Camera Control

Although PTZ cameras are regarded as “robotic,” they are not autonomous—they cannot (yet) track a subject all on their own. You will need a controller along with a way to monitor video from each camera. Different camera systems use different control protocols, though VISCA is one of the most common. This is a serial-based protocol that is typically carried over an RS-232 or RS-422 interface. Many camera systems allow for “daisy-chaining,” such that only a single “home run” connection is required back to the controller. Alternatively, one can follow the so-called “star pattern,” where each camera is independently linked to the controller. Daisy-chaining enables more cameras to be connected to a single controller but may or may not result in simpler cabling, depending on relative camera placement.

HuddleCamHD HC-JOY-G2 Serial Controller Joystick with VISCA/Pelco-D/Pelco-P Protocol

The controller itself features a joystick for panning and tilting, as well as a zoom toggle, in some fashion. In addition, and where supported, other camera parameters such as focus and exposure can be adjusted remotely, on the fly. Some systems even offer CCU-style camera setup controls to make calibrating all cameras to match easier.

Keep in mind, PTZ cameras aren’t motion control rigs. You may not achieve the finesse of feathering or control precision a good fluid head tripod provides, so it’s best to align your shot before cutting to that camera and keeping the camera “locked off” while it is live.

VariZoom CinemaPro “Talon” Master Motion Control Kit


Live video switchers will often provide a quad- or multi-view split screen output so you can view all the video sources on a single monitor. One option for monitoring is to let the PTZ operator tap this feed. Since non-PTZ sources may be included, doing so may be non-optimal for larger productions. A dedicated multiview to combine the PTZ images may be preferable. In addition to the multiview, you may want a full-screen preview of a single camera. A low cost “hard-cutting” switcher may be all you need for this purpose. However, with such a switcher there will be a momentary loss of signal, so it should not be used where rapid on-they-fly switching is required. This is especially true with HDMI signals.

Blackmagic Design MultiView 4

For best practice, ensure the signal going to this switcher is downstream from any appliances—such as the live switcher—that may be broadcasting live video. With SDI, your best signal choice for live broadcast, the video signal is easy to split or route, so the best plan is to split the camera feeds before they reach either the live switcher desk or the camera controller’s desk. This way, a fault on the live switcher’s end won’t mess up the camera operator while a fault on the camera operator’s end won’t mess up the live feed.

Video Switching

Since PTZ cameras typically feature standard video outputs, which may include SDI, HDMI/DVI, or legacy composite video, they will hook up to a live video switcher just as a non-remote camera would. SDI is your best bet. HDMI/DVI-based PTZ cameras are often lower cost than their SDI equivalents while outputting the same video quality. Unfortunately, HDMI is not accommodating when it comes to long cable runs. In addition, the handshake procedure HDMI requires increases latency when using it in a live-switching context. Analog is friendly for long cable runs (assuming you use baluns, discussed below) and boasts low latency since there is no handshake or other digital processing in the pipeline, but the quality is inferior and few switchers offer analog inputs these days, though mini converters are available.

Blackmagic Design Mini Converter Analog to SDI

The choice of live production switcher will depend on the camera signal as well as other factors; the PTZ camera is a video source just like any other. You will need to think about the number of cameras, as well as other video sources, such as computer graphics, that you may wish to integrate into the program. Also, PTZ cameras rarely feature microphones or even the ability to pass audio, so you will need a separate audio source, such as a tap from the venue’s PA system, to include an audio element in your program.

Blackmagic Design ATEM 1 M/E Production Studio 4K

Installation and Cabling

One of the biggest virtues of PTZ cameras is flexible mounting. Basic installation requires a flat wall mount. Many models can be inverted for “upside-down” ceiling mounting directly to a junction box. (Ensure when installing the camera, it is set to the correct mode, as accessing it later to “flip” the picture may be challenging.) Additionally, there is a wide variety or arms, domes, and other mounting solutions that are available. Some mounts even thread onto standard NPT 1.5″ pipe, allowing you to repose projector and AV mounts. Weatherized housings or even weatherized cameras are available for outdoor use.

Dotworkz D2 Standard Camera Enclosure

Apart from the mount, you will have to think about cabling. Generally, there will be a separate connection for video, control, and power.

Because of the distances involved, more than just a simple cable may be required to get the video and/or control signal from A to B. Cables act as antennas; the more radio interference they pick up, the more noise gets introduced into the signal. With analog signals the quality simply degrades, but with digital you will experience much less tolerable dropouts and, finally, complete signal loss. The most popular remedy is the balun. Baluns are essentially cable adapters that convert an unbalanced cable—for example, RG-6—to use as a balanced cable, usually Ethernet/CAT5 (some systems require CAT6 or CAT7). Baluns are available for basically every video signal type out there, as well as serial control signals such as RS-232 and RS-422. Since digital video, especially HD and high-resolution digital video, requires a high bandwidth, an alternative to use where baluns provide insufficient length is fiber optic.

KanexPro HDMI Extender over CAT5e/6

While baluns take care of video and control, there is still the matter of power. If an AC outlet is nearby, you may find the best option is to plug the camera directly in with an AC adapter. In many cases, however, you will need an electrician to run some custom wiring for power, as well. Some camera systems, especially those that are network controlled, support POE (Power over Ethernet), in which case the control and power will share the same connection.

By the way, one can also place a PTZ camera on a tripod for a non-permanent solution that enables remote camera control.

Angle of View

An important factor to consider when selecting a camera is lens characteristics. Just as video projectors have different throw ratios, PTZ lenses have different angles of view. Most PTZ cameras are fixed-lens, which means you will be stuck with the lens that comes with the camera. Based on where the camera will be placed, ensure the lens is wide enough to give you sufficient coverage when zoomed out, while telephoto enough to get the close-ups you want when zoomed all the way in. There is a variety of lens calculator apps available that can help you make this determination.

One paradox you will encounter is that higher-end cameras tend to feature longer zoom ranges. This is because lower-cost cameras have smaller image sensors. Saying that, a magnification more than about 10x is pushing the limits of what you are likely to get away with. Any vibrations or imperfections in the camera’s pan/tilt servo motors will be very apparent at such magnification. It will also be very hard to track a moving targe treliably. If possible, opt for closer camera placement rather than greater magnification, to achieve tighter shots.


To simplify the complexity a PTZ system entails, an option to consider is Vaddio’s WallVIEW series. Built around proven PTZ cameras, such as Sony’s EVI series, WallVIEW adds modifications that adapt power, video, and control to use Ethernet cables to greatly reduce installation headaches. In addition, the system optionally adds CCU control. Rack-mountable base units provide terminal points for all the cables, CCU operation, controller input, as well as video output.

Vaddio WallVIEW 70 PTZ Camera

Some live video production switchers, such as Sony’s Anycast, incorporate PTZ control. The Anycast works with VISCA protocol cameras, like its own EVI series. This is a great option for small productions with limited crew.  


Surveillance cameras are very like PTZ cameras and may be tempting as a low-cost alternative. Unfortunately, surveillance cameras probably won’t work. They are typically self-contained systems that don’t facilitate connection with third-party video equipment. In addition, they often feature low frame rates, which reduces bandwidth and storage space. All you need to ID a shoplifter is a freeze-frame, but this won’t cut it for live video.

Motorized pan/tilt heads can be a way to adapt a regular video camera for remote operation. This may be a consideration if you need true broadcast performance or are looking for a more flexible solution than a dedicated PTZ camera. If you plan to go this route, ensure the camera functions you need can be controlled remotely and the control and video connectors can be secured so that they don’t come loose during production.

ProAm USA Motorized Joystick Remote Controlled Pan & Tilt Head


PTZ cameras are great for venue settings, such as concert halls, lecture theaters, or houses of worship, because they can be installed nearly anywhere while remaining out of the way. Video content from PTZ cameras can be integrated into a live broadcast just as any other video source. Since they are robotic, unless the camera is left completely stationary, you will need a camera controller and an operator to line up the shots remotely. As with other AV equipment, you will need to consider the logistics of wiring up the cameras. In many cases, baluns and Ethernet cables can be used to provide an extensible cabling solution and offer longer cable runs compared to conventional video and serial cables.