#!/usr/bin/awk -f

#
# Make YouTube automatic subtitles more human readable
#

/^[0-9]+:[0-9]+:[0-9]+\.[0-9]+ -->/ {
	sub(/ align:start position:0%$/, "")

	if (caption && split(caption, lines, "\n") > 2) {
		print caption
	}

	ignore = 0
	caption = $0
	next
}

ignore {
	next
}

# skip extra empty lines
/^ +$/ {
	next
}

# current caption contains <c> garbage and will be repeated in the next
# caption, ignore it
caption && /><c>/ {
	ignore = 1
	caption = ""
	next
}

caption {
	caption = caption "\n" $0
	next
}

{
	print
}

END {
	if (caption && split(caption, lines, "\n") > 2) {
		print caption
	}
}