> When you have a gigantic long tail, and are transcoding a lot of traffic [...] Do you mean to say “YT does JIT transcode” or simply that the huge long-tail c

> When you have a gigantic long tail, and are transcoding a lot of traffic [...] Do you mean to say “YT does JIT transcode” or simply that the huge long-tail corpus means that transcode optimization >>> delivery benefits? :) Other things to factor in: different mix of mobile users & geographies (incl. access networks), software stacks, hardware costs/goals/footprint, etc.