Video Capture Card : What is it?
| tVideo capture cards allow computers to receive TV signals and save them on a hard drive for playback, editing, or recording. They usually convert analog content into digital, such as VHS tapes into DVD format. Some cards have dedicated hardware for importing video streams and rendering them on an editing program. Some even support real-time editing, where rendering takes only as long as the video itself. |
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Kinds of Video Capture Cards include the following: |
PCI video capture cards
PCI video capture cards mount onto a free slot in the PCI expansion rack in desktop computers.
They usually provide analog-to-digital conversion, but offer limited editing capacities.
Some models require a separate card or software to capture audio.
AGP video capture cards
AGP video capture cards attach directly onto the motherboard through an AGP channel.
The graphics configurations are usually adapted on the board for faster image processing.
They often include outlets for TV screens, projectors, or multiple monitors.
USB video capture cards
USB video capture cards are housed in separate boxes that plug into the computer's USB port.
They easy to install and can easily be shared between two or more computers.
They usually require a USB 2.0 port, since older USB versions cannot handle high transfer rates.
FireWire video capture cards
FireWire video capture cards connect to the computer through the IEEE 1394 or FireWire port.
They are designed for fast transfers and download speeds, making them ideal for high-resolution video capture.
They usually support streaming and real-time editing.
PCMCIA video capture cards
PCMCIA video capture cards plug into the PCMCIA slot found in laptops and mobile devices.
They are more compact than other card interfaces, but usually have fewer outbound feeds.
They also have fewer features and lower transfer rates. |
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Export options: Choose a video capture card that can optimize video for different applications, such as low-resolution versions for web publishing and maximum resolution for DVD authoring. Look for one that comes with an FTP tool if you want to upload feeds to a server. For disc burning, choose a program with an integrated burning engine.
File formats: Choose a video capture software that supports key file formats, including WMV and various versions of MPEG. For web or online sharing, look for one that converts to Flash SWF to minimize file size without reducing video quality. |
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