"My LCA talk on Friday was about why open video is critically important to free software, and what Mozilla is doing about [...] So why doesn't Mozilla just license H.264 (like everybody else)? One big reason is that that would violate principles of free software that we strongly believe in. In particular, we believe that downstream recipients of our code should be able to modify and redistribute it without losing any functionality. This is freedom that copyleft licenses such as the GPL and LGPL (which we use for our code) are intended to ensure..."