Here are all the templates that carry this code:
Code:
Runtime: {$answers[i].duration|string_format:"%.2f"} |
add_favour.tpl
add_video.tpl
ffavour.tpl
fvideos.tpl
gvideos.tpl
index.tpl
my_video.tpl
playlist.tpl
search.tpl
tag.tpl
user_favorites.tpl
user_videos.tpl


Just for looks, I used a different last line in my replace code than that which started this thread:

Code:
Runtime: {$minutes} minutes {$seconds} seconds
which produces

Runtime: 5 minutes 22 seconds