My prob: using the warp-stabilizer even the analyzing takes hours for a 3000 frames clip, what makes me wonder most: it seems to only use 1 of 4 CPU-cores and is not using the GPU at all, despite that it is one of the GPU-accelerated effects. Luckily I filmed this in 4k60 ( 3840 × 2160) and despite my thoughts the resolution gives us atleast the possibility to pan around in the frame.
I recently filmed with my smartphone some B-roll footage of a friends wedding, nothing too fancy but still needed because the photographer missed this stuff.