Comic-Con: San Diego welcomes superheroes and monsters

Superheroes and monsters are walking the streets of San Diego as thousands of comic book, video game and science fiction enthusiasts descend on the city for this year's Comic-Con.

Cos-play, dressing up in character, is a tradition for the superfans.

Many hope to catch a glimpse of their most loved film, TV and gaming stars - or simply looking to get a sneak peak at upcoming releases.

Lizo Mzimba reports