Go to Think Geek website they have a Betamax to HD-DVD converter
You can buy a rotary phase converter on home depot, Lowe's or online on http://www.americanrotary.com/
Buy it or use another converter
you can clike this link to buy
You can buy a DVD to iPod converter at retail stores in your local area such as Best Buy. Or you can buy one at sites like Amazon where you can get free shipping.
You buy it
Craigslist
at a store
Buy it.
You can not. There are no rebuilt cats and it is not legal to sell a used one.
Most recycle places that buy aluminum cans and the like will buy converters.
One can buy a VGA to USB converter from eBay, Office Depot, Walmart, Amazon, Best Buy, or Staples. It can be bought off eBay for as low as $25 or $29 from Parts Express.
According the 2012 video converter reviews, the best video converter now is "AVS Video Converter". It is because of the quality & the price. You can easily buy it from Amazon for the cheapest price of $25.95.