On Tue, 27 Jun 2006, Sandwich Maker wrote: > mp4 is not proprietary, it's mp3 with pictures. There are legal problems surrounding mp3 decoders/encoders, relating to software patents. It's one of those really arcane but terrifyingly oppressive things being battled up there in the stratosphere. Thomson CE has "patented" the algorithms needed to decode mp3s. Not the programs, but the *IDEAS* needed to decode them. Software patents are deemed horrible and oppressive by everyone not a huge multinational corporation. So you cannot legally write your own program, from scratch, that plays an mp3 file, technically speaking. Clearly, lots of people have, but the legal burden (in countries that recognize software patents, like the US and Japan, but NOT Europe) limits distribution to those willing to pay the blackmail licensing. Microsoft does, but for those of us who run linux/unix exclusively, I have to download it from a european site. Software patents are analogous not to patenting say the AMC V8, but the concept of V8. Eg. even from dead-scratch, if you made a motor with 8 holes, in two banks, you would have to license the idea first. It's counter to centuries of law and tradition, and is an attempt to "lock up" markets before they start. Software patents have created monstrosities such as illegal books; if you publish, in printed form, a program you wrote from scratch, consulting nobody, and never once in your life seeing another mp3-decoder program, that book would be illegal to distribute. (The same legal technique is used to label encryption "munitions".) _______________________________________________ AMC-List mailing list AMC-List@xxxxxxxxxxxx http://www.amc-list.com/mailman/listinfo/amc-list or go to http://www.amc-list.com