I read something recently on Doom9 that suggested the x264 psy tunings had their sweet-spot aimed higher up the bitrate scale and could actually be detrimental as the bitrate dropped to ridiculously low rates (as might happen in a live chat), but I'll bow to your superior knowledge.
I take it you believe x264 is better than libvpx for these use cases to some noticeable degree? Because even if x264 was tuned for this I thought there were some other considerations in the H.264 format that would make VP8 more competitive in this area than in other, no-holds barred maximum compression of high-bitrate files situations. (And I mean technically, not in the respective chances that people will actually use that specific H.264 encoder)
I take it you believe x264 is better than libvpx for these use cases to some noticeable degree? Because even if x264 was tuned for this I thought there were some other considerations in the H.264 format that would make VP8 more competitive in this area than in other, no-holds barred maximum compression of high-bitrate files situations. (And I mean technically, not in the respective chances that people will actually use that specific H.264 encoder)