If my book gets optioned, will I get to write the screenplay?

If my book gets optioned, will I get to write the screenplay?

Derek Johns (Managing Director - AP Watt Literary Agency) gives expert video advice on: Will an agent sell my book rights to Hollywood?; How many books make it to the screen?; If my book gets optioned, will I get to write the screenplay? and more...

Generally speaking, film producers do not want book writers to write their own Screenplays and adapt their own books because writing Screenplays is a completely different craft.