Image Magnification (IMAG) in Churches - Best Practices & RGBLink M1 Review

PTZOptics
PTZOptics
3.9 هزار بار بازدید - 6 سال پیش - In this video, we review
In this video, we review the importance of audiovisual workflow and system design chain when you are considering latency for image magnification specifically for churches. In many scenarios, the amount of latency between your video source and the projector or LCD screen does not matter if it is one or two seconds out of sync with the real-time audio in a particular space. In fact, most live streaming and recording production systems do not mind if the video being displayed on in-room monitors has a few seconds of latency because the main concern is audio sync on the recordings and live video.

In a church, near-zero latency is a must because so much music and in-room focus is happening for viewers in the space. It can be distracting for church members to look up at a large projection screen which is showing something happening right in front of them, but one or two seconds behind real-time. Generally, from our experiences, we have found that the longer your audiovisual chain of equipment is the longer your latency will become. Each piece of audiovisual equipment, including your live streaming computer, video extension hardware, cameras, cabling, and other format converters will all include some inherent latency. This latency may seem insignificant during the testing of a single piece of hardware but put into a large chain of equipment the latency can become quite apparent.

We did some testing with our Sharp LCD panels and a regular Dell computer by taking a picture of the computer screen plugged into the LCD screen at the same time. We found that this simple HDMI connection from a computer to an LCD screen produces roughly 60 milliseconds of latency. This amount of latency is unnoticeable to the human eye generally speaking. We then tried connecting the computer playing a countdown timer with milliseconds and used an RGB Spectrum M1 Video Switcher we added another 60 milliseconds of latency.

I consider this really good. We are only generating 120 milliseconds of latency from our video mixer and our video source. Generally, PTZ cameras can add another 100 milliseconds of latency creating a total of 2/10ths of a second. This is generally an acceptable amount of latency for Image Magnification inside a church environment but adding any additional latency can start to get beyond the acceptable threshold. For this reason, we generally recommend that a video switcher is used upstream of a live streaming computer. We have found that live streaming software with included “Low Latency Capture” optimization settings are generally acceptable. We have found there is a BIG difference between free software such as OBS and paid for software such as vMix in these scenarios.

Always use high-quality video production is always essential in scenarios where you want to eliminate latency and magnify images for a live audience. When testing you can use a regular camera and a video that display time with milliseconds included. We hope that our testing can help you out when trying to determine

PTZOptics Live Streaming Camera Manufacturer focused on HD-SDI, USB 3.0, HDMI and IP streaming cameras. Our YouTube channel features live broadcasting tips, tricks and tutorials for live streaming and more.

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6 سال پیش در تاریخ 1397/09/10 منتشر شده است.
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