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英語ディクテーション用にyoutube-dlでダウンロードしたvtt形式の字幕ファイルをPlain Textに変換するrubyスクリプト

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vtt形式は字幕表示に特化したフォーマットなので、人間が目で見るにはなかなか厳しいものがあります。

そこで、人間が見るのに適したPlain Textに変換するrubyスクリプトを作りました。

vtt2txt.rb
#!ruby

valid_texts = []

while line = gets
    line.strip!
    if line =~ /-->/
        valid_texts << gets.strip
    end
end

lastline = nil
valid_texts.each do |line|
    if line != lastline
        puts line
        lastline = line
    end
end

YouTubeのCNN 10の自動生成字幕で動作確認済みです。

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