The solution
In September 1998 the Fraunhofer Society sent letters announcing plans to charge licensing fees for MP3 software — a shock to the developers who had treated MP3 as a commons. Christopher 'Monty' Montgomery, who had been working on audio compression since 1993, responded by intensifying work on Xiphophorus's Ogg project: a codec that would be technically competitive and completely free of patents and royalties.
The team refined the design in the open, and on 8 May 2000 Montgomery froze the Vorbis I bitstream format — announced on the vorbis-dev list as 'Merge done' — guaranteeing that files encoded from then on would stay playable. In 2001, with Richard Stallman's endorsement, the libraries moved from LGPL to the BSD license explicitly 'to accelerate adoption' among proprietary hardware and software makers; a fixed-point 'Tremor' decoder followed for chips too small for floating point.
Vorbis never displaced MP3 in music collections, but it won the niches where royalties bite: game soundtracks (where per-unit MP3 fees scaled with sales), Wikipedia's audio, and open-source platforms. More importantly, it established Xiph's patent-free playbook that later produced Opus — the codec that did become the web's voice standard — and pressured patent pools into offering royalty-free tiers.
What it achieved
Build a better codec with zero patents, then loosen the license
Why it worked
Freezing the bitstream in May 2000 made Vorbis a dependable target for developers years before the 1.0 release.
Switching to the BSD license removed the last legal objection of hardware and proprietary-software makers.
The Tremor fixed-point decoder let the format reach cheap chips that could not run floating-point code.
The project aimed at royalty-sensitive uses — games, free software — where MP3's fees hurt most.
What can be applied
A licensing threat is a market opening: a free format with a ready-made implementation converts the incumbent's royalty demand into your adoption engine.
Aftermath
Vorbis 1.0 shipped in July 2002 and became standard in open-source media and many video games. Xiph.Org later folded its lessons into Opus (standardized by the IETF in 2012), and since 2013 has recommended Opus over Vorbis — a free codec beating its own free codec.
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