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Editorial Team
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Asked: 2026-06-12T03:29:12+00:00

I am trying to write a common regular expression for the below 3 cases:

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I am trying to write a common regular expression for the below 3 cases:

  • Supernatural_S07E23_720p_HDTV_X264-DIMENSION.mkv
  • the.listener.313.480p.hdtv.x264-2hd.mkv
  • How.I.met.your.mother.s02e07.hdtv.x264-xor.avi

Now my regular exoression should remove the series name from the original string i,e the output of above string will be:

  • S07E23_720p_HDTV_X264-DIMENSION.mkv
  • 313.480p.hdtv.x264-2hd.mkv
  • s02e07.hdtv.x264-xor.avi

Now for the basic case of supernatural string I wrote the below regex and it worked fine but as soon as the series name got multiple words it fails.

$string =~ s/^(.*?)[\.\_\- ]//i; #delimiter can be (. - _ )

So, I have no idea how to proceed for the aboves cases I was thinking along the lines of \w+{1,6} but it also failed to do the required.

PS: Explanation of what the regular expression is doing will be appreciated.

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1 Answer

  1. Editorial Team

    you can detect if the .’s next token contains digit, if not, consider it as part of the name.

    HOWEVER, I personally think there is no perfect solution for this. it’d still meet problem for something like:

    24.313.480p.hdtv.x264-2hd.mkv            // 24
Warehouse.13.s02e07.hdtv.x264-xor.avi    // warehouse 13
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