Aspect ratio

The relationship between the width and the height of your video dimensions expressed as a ratio. The most common aspect ratios for video are 4:3, 16:9. Resolution is a measure of the number of pixels a video contains both horizontally and vertically.

HDMI

High Definition Media Interface is a digital connector prevalent across both consumer electronics and modern computers. HDMI carries both HD video and the audio signal to the display device. It is available in standard and mini format. Practically, there is a limit of 15m before losses are incurred. Beyond this distance boosted HDMI cables can be used or an HDMI extender. (Standard or HDBaseT).

HDCP

High-bandwidth Digital Content Protection is a copy-protection scheme to eliminate the possibility of capturing digital content from the source to the display. It is designed to protect digital signals when using a Digital Video Interface (DVI) and High-Definition Multimedia Interface (HDMI). Should any device in the signal chain not support HDCP then a blank or ‘snowy’ picture will be the result.

FPS

Frame rate is the measurement of how quickly a number of frames appears within a second, which is why it's also called FPS (frames per second).

24fps This is the minimum speed needed to capture video while still maintaining realistic motion. If you capture a really busy scene at 24fps, you'll see a lot of motion blur.

30fps With six more frames a second, you'll see more detail during scenes with high motion; however, the motion might start to look unnatural and suffer from the "soap opera effect", if a lower FPS source is displayed.

30+fps Anything higher than 30fps is usually reserved for recording busy scenes with lots of motion, such as video games, athletics, or anything you want to show in slow motion.

HDBaseT

HDBaseT is a consumer electronic and commercial connectivity standard for transmission of uncompressed ultra-high definition video, digital audio, DC power, Ethernet, USB 2.0, and other control communication (such as RS-232 and IR) over a single category 5e (or better) cable up to 100m in length, terminated using RJ45 connectors. The conductors, cable, and connectors are as used in Ethernet networks, but are not otherwise exchangeable.

H.264

Also known as MPEG-4 AVC (Advanced Video Coding) it is now one of the most commonly used recording formats for high-definition video. It offers significantly greater compression than previous formats.