File youtube-dl/config artifact 247dd04c79 part of check-in 564302e990
# 315 2160p[56]0 vp9 # 308 1440p[56]0 vp9 # 264 1440p avc1 # 299 1080p[56]0 avc1 # 137 1080p avc1 # -f 315+251/308+251/264+140/299+140/137+140/best -f 308+251/264+140/299+140/137+140/best --merge-output-format mkv