Class: YoutubeTranscript2020

Inherits:
Object
  • Object
show all
Defined in:
lib/youtube_transcript2020.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(id = nil) ⇒ YoutubeTranscript2020

Returns a new instance of YoutubeTranscript2020.



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# File 'lib/youtube_transcript2020.rb', line 14

def initialize(id=nil)

  return unless id

  @id = if id[/https:\/\/www\.youtube\.com\/watch\?v=/] then
    id[/(?<=^https:\/\/www\.youtube\.com\/watch\?v=).*/]
  elsif id[/https:\/\/youtu\.be\//]
    id[/(?<=^https:\/\/youtu\.be\/).*/]
  else
    id
  end

  s = Net::HTTP.get(URI("http://video.google.com/timedtext?lang=en&v=#{@id}"))
  @s = parse s

  fetch_info(@id)

end

Instance Attribute Details

#author ⇒ Object (readonly)

Returns the value of attribute author.



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# File 'lib/youtube_transcript2020.rb', line 12

def author
  @author
end

#id ⇒ Object (readonly)

Returns the value of attribute id.



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# File 'lib/youtube_transcript2020.rb', line 12

def id
  @id
end

#title ⇒ Object (readonly)

Returns the value of attribute title.



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# File 'lib/youtube_transcript2020.rb', line 12

def title
  @title
end

#to_a ⇒ Object (readonly)

Returns the value of attribute to_a.



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# File 'lib/youtube_transcript2020.rb', line 12

def to_a
  @to_a
end

Instance Method Details

#import(obj) ⇒ Object

reads a plain text transcript which has been modified to include headings



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# File 'lib/youtube_transcript2020.rb', line 51

def import(obj)

  s = RXFHelper.read(obj).first

  header, body = s.split(/-----+/,2)

  h = SimpleConfig.new(header).to_h
  @id, @author, @title = h[:id], h[:author], h[:title]
  @s = body
  
  a = body.lines.map(&:chomp).partition {|x| x =~ /\d+:\d+/ }    
  @a = a[0].zip(a[1])    

end

#to_headings ⇒ Object

Outputs plain text containing the headings including timestamps note: This can be helpful for copyng and pasting directly into a YouTube comment



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# File 'lib/youtube_transcript2020.rb', line 106

def to_headings()    
  
  @to_a.select {|timestamp, _| timestamp =~ / /}.map(&:first)    

end

#to_html ⇒ Object

Outputs HTML containing the embedded video and transcription



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# File 'lib/youtube_transcript2020.rb', line 68

def to_html()

  url = 'https://www.youtube.com/embed/' + @id

  links = @a.map do |timestamp, s|
    
    seconds = Subunit.new(units={minutes:60, hours:60}, 
                timestamp.split(':').map(&:to_i)).to_i
    "<li><a href='%s?start=%s&autoplay=1' target='video'>%s</a><p>%s</p></li> " \
        % [url, seconds, timestamp, s]
  end

<<EOF
<!DOCTYPE html>
<html lang="en">
<head>
  <title></title>
  <meta charset="utf-8" />
</head>
<body>
<div style="width: 1080px; background: white">
<div style="float:left; width: 580px; background: white">
<iframe width="560" height="315" src="#{url}&autoplay=1" name="video" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
<h1>#{@title}</h1>
</div>
<div style="float:right; width: 500px; overflow-y: scroll; height: 400px">
<ul>#{links.join("\n")}</ul>
</div>

</div>
</body>
</html>
EOF
end

#to_keywords(level: 2) ⇒ Object

returns a Hash object containing the frequenecy of each word level: 2 (ignores commond words including stop words) level: 3 (ignores dictionary words)



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# File 'lib/youtube_transcript2020.rb', line 116

def to_keywords(level: 2)
  Yawc.new(self.to_text(), level: level).to_h
end

#to_s ⇒ Object

returns the transcript in plain text including timestamps



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# File 'lib/youtube_transcript2020.rb', line 39

def to_s()

  h = {id: @id, title: @title, author: @author}
  SimpleConfig.new(h).to_s + "\n#{'-'*78}\n\n" + @s
end

#to_text ⇒ Object 



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# File 'lib/youtube_transcript2020.rb', line 45

def to_text()
  @a.map(&:last).join("\n")
end