If your has an A/V-out port and a cable that lets you output to a TV, you should be fine.
If your computer already has a video input-many do, particularly ones
marketed as media PCs-then you're all set: You can just plug the camera
into your computer and turn on the camera.
If your computer doesn't have a video input, you can buy an
inexpensive USB capture device for $5 to $10 on eBay, or a brand new EasyCap Video Capture Adapter for $15.
The same device can let you watch TV on your computer, too, since the
encoding hardware is the same-look for a TV-tuner-plus-video-capture USB
adapter for $30 to $50 instead. You'll need to install the driver that
comes with the device, but not the video-editing software
.
Simply run your favorite IM client; with the capture device's driver
installed; the IM client should find your camera and let you use it as
your webcam for video conferences
.
I hooked up my Canon PowerShot to a desktop PC using a $15 video-capture dongle and simply ran iChat
, selecting the video device as my input. I was videoconferencing within minutes.
With some cameras the audio will be sent along with the video. If
that's not the case with yours, set your computer's audio input to its
microphone.
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