youtube-dl -F --user-agent '' https://www.youtube.com/watch?v=j_OyHUqIIOU
youtube-dl -f 137+141 https://www.youtube.com/watch?v=j_OyHUqIIOU --ffmpeg-location /usr/local/bin/ffmpeg

debian/ubuntu 下载VR (180°/360°)视频并输出mkv

apt install ffmpeg
youtube-dl -F --user-agent '' "https://www.youtube.com/watch?v=i-XqksEeLWo&list=PL1wnSTNddqOII1gWimU-qzOKelphigY7-&index=5"
#观察最好音质
# 140          m4a        audio only tiny  129k , m4a_dash container, mp4a.40.2@129k (44100Hz), 3.98MiB
#观察最大分辨率为
# 272          webm       5760x2880  2880s60 9794k , webm_dash container, vp9@9794k, 60fps, video only, 300.66MiB
youtube-dl -f 272+140 --merge-output-format mkv --user-agent '' "https://www.youtube.com/watch?v=i-XqksEeLWo&list=PL1wnSTNddqOII1gWimU-qzOKelphigY7-&index=5"