Video capturecard is one of the most important hardwares to be used for multimedia work on a personal computer. Video-capture results will depend on the performance and capacity of all of the components of the system working together. For capturing video from analog devices like video camera requires a special video capture card that converts the analog signals into digital form and compresses the data. Video-capture card use various components of the computer to pass frames to the processor and hard disk. For good quality video, a video-capture card must be able to capture full-screen video at a good rate. For example for a full-motion video, the card must be capable of capturing about 35 frames per second at 720 by 480 pixels for digital video and 640 by 480 for analog video. To determine what settings will produce the best results for your projects, you must be careful in defining these parameters.
A sound card is a device that attaches to the motherboard to enable the computer to input, process, and deliver sound. The sound card generates sounds; records sound from analog devices by converting them to digital mode and reproduce sound for a speaker by reconverting them to analog mode. Creative Lab's Sound Blaster is a standard sound card.
A video adapter provides extended capability to a computer in terms of video. The better the video adapter, the better is the quality of the picture. A high quality video adapter is a must for designing a multimedia project.
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