title: regex: don't match if containing a specific string
body: <p>I have two strings:</p>
  
  <pre><code>"Some Stuff S00E00 HDTV x264-2HD mp4"
  
  "Some Stuff S00E00 720p HDTV X264"
  </code></pre>
  
  <p>And this regex:</p>
  
  <pre><code>^.ome.*.tuff.*.(mp4.*|HDTV.*|x264.*)
  </code></pre>
  
  <p>What I need is to only match the first one. So if the string contains "720" the regex should not match that. But the string has to contain "mp4", "HDTV" or "x264".</p>