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@jnv /srt2txt.rb
Last active Nov 20, 2018

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Converts SRT subtitles to plain text, strips irrelevant parts. Requires gems: srt, sanitize. Created for Doctor Who text analysis project.
#!/usr/bin/env ruby
require "srt"
require "sanitize"
REJECT_LINES = [/Best watched using Open Subtitles MKV Player/,
/Subtitles downloaded from www.OpenSubtitles.org/, /^Subtitles by/,
/www.tvsubtitles.net/, /subtitling@bbc.co.uk/, /addic7ed/, /allsubs.org/,
/www.seriessub.com/, /www.transcripts.subtitle.me.uk/, /~ Bad Wolf Team/,
/^Transcript by/, /^Update by /, /UKsubtitles.ru/
]
fname = ARGV[0]
file = SRT::File.parse(File.new(fname))
file.lines.each do |line|
txt = line.text.reject do |l|
if l =~ /^OK/ # OK. et al.
false
elsif l =~ /[\?\.!]$/ # keeps screaming, includes some sounds
false
else
l =~ /^[^a-z]*$/ # Reject all-upcase lines to remove sound descriptions
end
end
txt = txt.join(" ").encode("UTF-8")
txt.gsub!(" .", ".") # . . . ellipsis
txt.gsub!("\u0092", "'") # RIGHT SINGLE QUOTATION MARK apostrophe
txt = txt.strip.squeeze(" ")
next if txt.empty?
next if REJECT_LINES.any? { |expr| expr =~ txt }
puts Sanitize.clean(txt)
end
puts
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