Video capture cards are used to transfer the video signal from external sources to a computer. They are necessary for streaming, recording content, video conferencing, and working with old media (digitizing video cassettes). A high-quality device ensures stable image transmission without delays. This is especially important for professional streaming or recording of content.
What are video capture cards?
There are two main categories:
- Internal video capture cards are installed directly into the motherboard slot (PCI Express x1, x4 or x16), providing high bandwidth and minimal latency.
- External models are connected via modern interfaces - USB 3.0, USB-C or Thunderbolt, which makes them mobile and convenient for working with laptops.
Another key parameter is video interfaces for connecting signal sources. The most in demand are HDMI and DisplayPort inputs for modern technology, and professional SDI inputs for studio equipment.
Modern cards support video capture in resolutions up to 4K at 120 Hz or Full HD at 240 Hz, which is necessary for smooth recording of dynamic scenes. Advanced features include:
- end-to-end signal transmission with zero latency to the monitor;
- support for HDR10/Dolby Vision high dynamic range standards;
- Hardware video encoding in efficient H.265 (HEVC) or AV1 formats to save disk space.
Video capture devices capable of processing multiple independent video streams simultaneously are available for multi-camera studios.
How to choose the right video capture card
It all depends on the goal.:
- OBS/Twitch streams require a video capture card with minimal latency and stable drivers.;
- to record gameplay from PS5/Xbox, it is important to support modern resolutions (4K/60 Hz);
- They buy reliable external USB models for conferences.;
- To work with retro consoles and digitize video cassettes, they order cards with composite or component inputs.
Important selection criteria:
- Compatibility and delay. Make sure that you have stable drivers for your OS (Windows, macOS). For interactive broadcasts, the delay should be minimal.
- Interfaces and quality. The video capture card must have the necessary inputs (HDMI, SDI, etc.) and support full color reproduction (4:4:4 chroma) for working with text and graphics.
Let's list the main mistakes. Buying a model with USB 2.0 for 4K leads to lags and a drop in resolution. Ignoring the 4:4:4 chroma support makes the small text in the recording unreadable. Using cheap HDMI adapters can limit the frame rate.
You can order a video capture card for any task in our online store. You can get advice on choosing a good and inexpensive model, as well as specify the price and delivery time from the manager.
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