Introduction to the Video Capture Cards

Introduction to the Video Capture Cards

A video capture card is a card for capacity expansion, which has the function of allowing the input of video/audio signals to the computer, so that it can be edited and manipulated according to the needs of the user. It is inserted into the expansion slots integrated into the main motherboard and is screwed to the cabinet to prevent movement and failure. Video capture cards integrate multiple ports for connecting external devices such as PlayStations, DVD players, VCR, TV, etc. Currently video capture cards compete in the market against external capture devices.

Characteristics of a Video Capture Card

  • It is integrated into whether an integrated circuit or chip especially for professional video solutions.
  • It has several ports for connecting the external devices from which it sends and receives audio/video signals.
  • It has a special interface that allows to be inserted into the expansion slots of the motherboard.
  • It can coexist with internal video cards installed on the motherboard, as its function is to receive the external audio/video but not to deploy the general video.

Video Capture Cards for Closed Circuit

There is a variant used for closed circuit television, applied in surveillance work. These have several ports of the same type, which allow to capture video from various surveillance cameras to monitor activities and/or store them in a computer for viewing later.

Channel Capacity

There is maximum number of signals from various cameras that is capable of receiving, and scalability to count.

Transmission Technology

It can support the use of BNC coaxial cabling, LAN-based UTP cable to RJ-45, VGA, and network connector support for IP cameras.

Recording Format

It is capable of recording MPEG, AVI and the number of frames per second (FPS).

Parts of a Video Capture Card

The components are visible, since it does not have protective cover which are as follows;


It is the plate on which electronic components are mounted.


They are responsible for electronic card operation.


It is inserted into the slot of the motherboard and sends captured video signals.


They are responsible for receiving external signal.


It is responsible for fixing the card to the cabinet and prevent movement.

Interface type for Slots

It basically uses the PCI (Peripheral Components Interconnect) interface which integrates a data capacity of 32-bit and 64-bit microprocessor and has a transfer rate of up to 125.88 megabytes per second to 503.54 megabytes per respectively. It has the internal working speed of 33 MHz for 32 bits and 66 MHz for 64 bits.

Capture cards are one of the many devices in the tech industry that serve to provide maximum efficiency, saving on both time and money, and allowing large amounts of data to be transferred more quickly. Hence it belongs to the innovations category, as it has revolutionized live session streaming. They can vary widely from video conferences between scientists to the bloody battles of Call Of Duty.

Capture cards have ensured that you can save your whole screen output in video format, giving you an alternative data backup apart from the specific data files. It has various other functionalities, as can be seen on websites like YouTube and Twitch. Mostly it is well known in the gaming community, especially to gaming tutors.

When looking for the best capture card that can appropriately record your experiences, there are a number of factors that have to be kept in mind. The foremost is obviously the quality of the audio/video output, namely the resolution and frame rate. Latency and lag are important demonstrators of performance, and portability can also be of interest to most users.

Output Quality

Most capture cards offer a video output of resolution 1080p and 60fps frame rate, which has pretty much become the standard for professional users. Anything below this is considered below par, and only satisfies the casual users. Bear in mind that an output of such quality will take up a lot of space, so you will require appropriate storage.


This is measured in terms of the latency of the connectivity, lower the latency better the performance. The Elgato, AVerMedia, and the StarTech are well known for their low latency. This ensures lag-free recording, giving you the perfect experience. In terms of delay, the StarTech takes the ball form the others with a delay that goes as low as 30ms.


This refers to the features of the device that can characterize it as easy to use and carry around. Most devices require external powers sources to function, so those that can work on their own bear the advantage of being portable. The device should also be close to pocket size so it can be transported easily without requiring a carrying aid. The position of the input and output ports also need to be on the opposite sides. By following these tips, you will get the best capture card for sure.


Related Articles

Leave a Reply

Your email address will not be published.