IEEE 1394 is an external serial bus standard with high speed of 800Mbps. In recent years, with the decline in cost, 1394 card is quickly popularized. Other related devices, such as digital cameras, hard disks, network cameras, etc. The 1394 interface has functions that broadcast data from one input information to multiple output machine, which is especially suitable for the connection of family audiovisual AV (Audio-Visual). Since the interface has the transfer function of the time, ensuring audiovisual AV device replay the quality of sound and image data, with good replay effect,
Strictly speaking, the IEEE1394 card is just a general interface, not a video capture card. For example, we can connect a high-speed external hard drive to the IEEE1394 card. However, because most of the IEEE1394 cards are connected to DV digital video camera, we usually see it as capture card. At present, the 1394 card on the market can be simply divided into two categories: a DV card with hardware DV real-time encoding function, and 1394 cards that implement compression encoding with software.
DV card with hardware encoding function is in thousands of yuan, the DV card with hardware encoded can greatly improve the speed of DV editing, and can handle some stunt conversion in real time, and many of these cards with processing MPEG-II video stream Function.
