Was working with the x264 crowd fun or exasperating or ...? Video-encoding is such a polymath topic (compression, perception, optimisation) and that code was so smart. I clearly remember mb-tree coming out and x264 quality/bitrate performance changing from good to supergood, and reading Dark Shikari's check in note about taking the implicit dependency graph and using it to propagate the relative quality of the blocks and it was a 'wow' moment. Also the Loren Merritt quote page still holds up well http://www.x264.nl/developers/Dark_Shikari/loren.html . Thank you
The issues related to commercial licensing of x264 probably ensured that Dark Shikari would never want to work on video encoding things again even before she burned out and quit software development entirely a few years later.