Video indexing
čParse XML file to compute pedagogical indexes
4Difficulty to understand  the video 
lSpeed of speech
– based on the average number of word syllables pronounced between two time codes
l Vocabulary level
– Percentage  of spoken words in the video in list of words corresponding to skill level in the language
4Grammar profile 
– number of times a specific grammar form or syntactic pattern is found in the NLP result 
čThese indexes are used by the teacher to select videos
4adapted to their pupils’ skills or their pedagogical objectives
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