S-video is actually a somewhat poor way to carry a video signal. The color, contrast, and sharpness will all be compromised with the Y/C process. At the same S-video is a much better choice than composite video, which is commonly known as of less quality than S-video and among the poorest in general.
When you are trying to sync up different types of digital video equipment, such as a digital video camera and a television, the S-video option is going to be superior. When it comes to newer digital video equipment you are going to have even better options to choose from for video information transfer.
One of the best alternatives to S-video for transfer and video capture will be to use fully digital storage devices on your digital video camera, then transfer the digital video file to a computer or comparable television system with a storage device. This is usually going to be the over all cleanest transfer, unless you have to compress the file digitally.