If you want to capture web camera video, I suggest you to use some screen recorder, which can help you record whatever on your desktop with high quality, and you can save it as standard video files, so you can upload it to some video sharing website.
If you have any doubt,
you can refer to http://www.screenrecord.net/capture-web-camera-video.html
Comments
The easiest way to do this is
The easiest way to do this is via Flash, it's multi-platform too.
check these:
http://stackoverflow.com/questions/1350594/use-flash-capture-webcam-image
http://www.riacodes.com/flash/captures-images-from-the-webcam-and-save-t...
If you want to capture web
If you want to capture web camera video, I suggest you to use some screen recorder, which can help you record whatever on your desktop with high quality, and you can save it as standard video files, so you can upload it to some video sharing website.
If you have any doubt,
you can refer to http://www.screenrecord.net/capture-web-camera-video.html