Complex sentence: Under the original title of "Local Hero", it was to star Tony Jaa and Jean-Claude Van Damme, but due to other commitments, Van Damme had to decline the role; he was filming "Swelter" at the time.
Split into simpler sentences: Under the original title of "Local Hero", it was to star Tony Jaa and Jean-Claude Van Damme. But due to other commitments, Van Damme had to decline the role; he was filming "Swelter" at the time.