Good mpeg1 book

Any /prog/gers know of a good book that covers the entire mpeg1 ISO standard that is cheaper than paying $500 USD^₁ the standard itself?

____________
_{1. That's just for 1,2 & 3 of the standard: http://mpeg.chiariglione.org/standards/mpeg-1/mpeg-1.htm}

>>1
Pretty sure you can find copies of the standards in PDF if you google hard enough. Asking developers who developed free mpeg1 decoders or encoders might also be a good idea (or visiting their sites).