Special low-noise and low-jitter circuitry as well as very high-speed PCB layout techniques are now required to make capture cards for digital and analog video sources. At the system level this function is typically performed by a dedicated
video capture device, colloquially called a
capture card. Such devices typically employ integrated circuit
video decoders to convert incoming video signals to a standard digital video format, and additional circuitry to convey the resulting digital video to local storage or to circuitry outside the video capture device, or both. Depending on the device, the resulting video stream may be conveyed to external circuitry via a computer bus (e.g.,
PCI/104 or PCIe) or a communication interface such as
USB,
Ethernet or
Wi-Fi, or stored in mass-storage memory in the device itself (e.g.,
digital video recorder). Decklink DSCF4439 (16425904428).jpg|A dual link 3 Gbit/s
SDI video capture card for
PCIe (
Blackmagic Design DeckLink HD Extreme 3D) Datapath VisionRGB-E2s Dual Port Capture Card.jpg|A PCIe 2-port
HDMI video capture card (Datapath VisionRGB-E2s) ISA-Framegrabberkarte.jpg|
ISA analog video capture card 8-channel uncompressed video+audio capture device.jpg|A Mini PCIe card that simultaneously captures 8 video and 8 audio signals (Sensoray 1012) Reddo Videosieppari.JPG|A low-cost, consumer-grade USB audio/video capture device (Reddo Videosieppari) ==See also==