What is the difference between the CvCapture structure and the VideoCapture structure?

What is the difference between the CvCapture structure and the
VideoCapture structure?

References

Reference NO 1

http://stackoverflow.com/questions/13654623/what-is-the-difference-between-the-cvcapture-structure-and-the-videocapture-stru

Reference NO 2

http://www.cognotics.com/opencv/docs/1.0/ref/opencvref_highgui.htm

Reference NO 3

http://docs.opencv.org/java/org/opencv/highgui/VideoCapture.html

Reference NO 4

http://opencv.willowgarage.com/documentation/python/reading_and_writing_images_and_video.html

Reference NO 5

http://my.safaribooksonline.com/book/programming/opencv/9780596516130/highgui/working_with_video

Reference NO 6

http://vision.ee.ccu.edu.tw/poolllz/openCV%20textbook.htm

Reference NO 7

http://www.irccyn.ec-nantes.fr/~martinet/CoVis/4-OpenCV-main.pdf

Reference NO 8

http://www.experts-exchange.com/Programming/Languages/CPP/Q_21888542.html