I am getting trouble exercising ways to get multiple slugs which are produced dynamically

I want myurl.com/directors-name-slug/film-title-slug

so this may be anything for example myurl.com/martin-scorsese/the-departed All queries undergo directors.php.

Right now I'm using directors.php?director=SLUG&film=SLUG2

and was thinking it might work something like..

    RewriteRule ^([^/]*)/([^/]*)$ /directors.php?director=$1&video=$2 [L]

But that only returns a 404 after i consider using a URL for example myurl.com/martin-scorsese/the-departed

I've myurl.com/martin-scorsese working all right with...

    RewriteRule ^([^/\.]+)/?$ /directors.php?director=$1 [L]