My kdenlive mp4 render settings for YouTube

f=mp4

movflags=+faststart

acodec=aac

ar=48000

ab=384k

vcodec=libx264

progressive=1

preset=fast

threads=0

crf=21

g=15

bf=2

meta.preset.extension=mp4

meta.preset.note=H.264/AAC MP4 for YouTube

so i never have to reinvent the wheel.