Videogrep is a python script that searches through dialog in videos and then cuts together a new video based on what it finds. Basically, it’s a command-line “supercut” generator.
You can also use videogrep to find instances of people employing specific grammatical structures.

https://github.com/antiboredom/videogrep

Démo : Les silences de plus de deux seconde dans Total Recall :

https://www.youtube.com/watch?v=qEtEbXVbYJQ

Démo : Les occurences du mot "time" :

https://www.youtube.com/watch?v=PQMzOUeprlk

Démo : Les occurrences de la structure grammaticale "gérondif déterminant adjectif nom" :

https://www.youtube.com/watch?v=DAR0RBbua34

via http://lav.io/2014/06/videogrep-automatic-supercuts-with-python/