Warning: this is an htmlized version!
The original is across this link,
and the conversion rules are here.
// From:
// http://angg.twu.net/blogme3/local-videos.js.html
// http://angg.twu.net/blogme3/local-videos.js
//              (find-blogme3 "local-videos.js")
// Author: Eduardo Ochs <eduardoochs@gmail.com>
// Version: 2013dec09
//
// (find-2a '(find-fline "local-videos.js") '(find-fline "local-videos-mini.js"))
// (find-tkdiff          "local-videos.js"               "local-videos-mini.js")
// (find-tkdiff          "local-videos.js"             "~/local-videos.js")
// http://angg.twu.net/2013-petropolis.html
// http://angg.twu.net/local-videos.html
//           (find-TH "linkdasruas")
//           (find-TH "2013-irina")
// (find-blogme3file "local-videos-mini.js")
//
// See:
// http://angg.twu.net/blogme3/local-videos.js.html
eltbyid       = function (id)      { return document.getElementById(id); }
from_textarea = function (id)      { return eltbyid(id).value; }
from_pre      = function (id)      { return eltbyid(id).innerHTML; }
to_textarea   = function (id, txt) { eltbyid(id).innerHTML = txt; }
to_pre        = function (id, txt) { eltbyid(id).innerHTML = txt; }

escape_table = {
  '&': '&amp;',
  '<': '&lt;',
  '>': '&gt;',
  '"': '&quot;',
  "'": '&#x27;',
  "\x0f": '<font color="red"><strong>*</strong></font>'
}
escape_char = function (c) { return escape_table[c] || c; }
escape = function (str) { return str.replace(/[\x0f&<>"']/g, escape_char); }

youtube_mp4s = {}
nonemptylines = function (bigstr) { return bigstr.match(/[!-~]+/g); }
add_mp4s = function (bigstr) {
  var fnames = nonemptylines(bigstr), i;
  for (i=0; i<fnames.length; ++i) {
    var fname = fnames[i];
    var A = fname.match(/(...........)\.mp4$/);
    if (A) {
      youtube_mp4s[A[1]] = fname;
    }
  }
}
get_mp4s_from = function (id) {
  var elt = document.getElementById(id);
  // add_mp4s(elt.innerText);
  add_mp4s(elt.textContent);
  elt.innerHTML = "";
}

youtube_hash_re = /[?&]v=([^ &]+)/
youtube_hash = function (str) {
  var A = str.match(youtube_hash_re);
  if (A) { return A[1]; }
}
youtube_line_re = /^(.*)(https?:\/\/www.youtube[^ ]*)( *)(.*)$/
youtube_line_parse = function (str) {
  var A = str.match(youtube_line_re);
  if (A) {
    var all=A[0], a=A[1], url=A[2], b=A[3], title=A[4];
    var hash = youtube_hash(url);
    if (hash) {
      return {'all':all, 'a':a, 'url':url, 'b':b, 'title':title, 'hash':hash};
    }
  }
}

href0 = function (tgt, text)  { return '<a href="'+tgt+'">' + text + '</a>'; }
href  = function (tgt, text)  { return tgt ? href0(tgt, text) : text; }

url_line_re = /^(.*)(https?:\/\/[!-~]*)( *)(.*)$/
url_line0 = function (str) {
  var A = str.match(url_line_re);
  if (A) {
    var all=A[0], a=A[1], url=A[2], b=A[3];
    return escape(a)+href(url, url)+escape(b);
  }
}

youtube_url = function (hash) { return "http://www.youtube.com/watch?v="+hash; }
yt_link     = function (hash) { return "("+href(youtube_url(hash), "YT")+")"; }
title_link  = function (h, t) { return href(youtube_mp4s[h], t); }
title_link  = function (h, t) { return href(youtube_mp4s[h], escape(t)); }
youtube_line0 = function (li) {
  var A = youtube_line_parse(li)
  if (A) {
    return A.a + yt_link(A.hash) + A.b + title_link(A.hash, A.title);
  }
}
youtube_line = function (li) { return youtube_line0(li) || li; }
youtube_line = function (li) { return youtube_line0(li) || url_line0(li) || li; }
youtube_activate0 = function (bigstr, f) {
  return bigstr.replace(/[^\n]+/g, (f || youtube_line));
}
youtube_activate = function (id, f) {
  var elt = document.getElementById(id);
  // elt.innerHTML = youtube_activate0(elt.innerText, f);
  elt.innerHTML = youtube_activate0(elt.textContent, f);
}

// New:
// youtube_activate = function (id, f) {
//   to_pre(id, youtube_activate0(from_pre(id), f));
// }

// get_mp4s_from("mp4s")
// youtube_activate("body")