This is so good. Trying to do the same with Davinci Resolve for GoPro videos in 2.7k resolution took me hours. p.s. I'm more than sure that there's ffmpeg port

This is so good. Trying to do the same with Davinci Resolve for GoPro videos in 2.7k resolution took me hours. p.s. I'm more than sure that there's ffmpeg port to windows, but I've just used it via Ubuntu on WSL (1.0) and it worked perfectly on a 3.72GB file of 8 something minutes length: time=00:00:38.47 bitrate=67220.6kbits/s speed=91.8x