1) How does a GPL&#x27;ed reference implementation prevent digital cameras from using the format?<p>2) The reference implementation will most likely change to a more permissive license, cf <a href="https:&#x2F;&#x2F;github.com&#x2F;FLIF-hub&#x2F;FLIF&#x2F;issues&#x2F;192" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;FLIF-hub&#x2F;FLIF&#x2F;issues&#x2F;192</a><p>3) If digital cameras would use FLIF, they would probably need to implement a simplified encoder in hardware, e.g. one that uses a hardcoded (set of) MANIAC tree(s) and only uses a subset of the available encoding options. Otherwise it will be too slow.