Complex sentence: Kashyap initially rejected Koechlin, as she was not Indian, and did not match his visualisation of the character, but he changed his mind, and offered her the role, after seeing her audition tape.
Split into simpler sentences: Kashyap initially rejected Koechlin as she was not Indian, and did not match his visualisation of the character. But he changed his mind, and offered her the role after seeing her audition tape.