Here is a blog post putting together everything you need to know about watching the movie legally.
The fifth installment of the Pirates of the Caribbean franchise, featuring Johnny Depp as Captain Jack Sparrow, is titled Pirates of the Caribbean: Dead Men Tell No Tales (released in some regions as Salazar's Revenge jack sparrow tamil movie part 5 download isaimini
Some of these films have been unofficially dubbed into Tamil and uploaded to piracy sites like Isaimini, Tamilrockers, and Moviesda. These dubs are and often have poor audio/video quality. Here is a blog post putting together everything