Jake Gyllenhaal's new film, Demolition (2015), has opened the 40th Toronto International Film Festival.

The 34-year-old stars as a successful investment banker who has to rebuild his life after his wife is killed in a car crash.

Directed by French-Canadian Jean-Marc Vallee, the tragicomedy also stars Naomi Watts, Chris Cooper and newcomer Judah Lewis.

Almost 400 films will be screened at the festival over the next 11 days.

Introducing the world premiere of Demolition on stage, Vallee said his latest project was "probably the most rock 'n' roll film I've ever made".

"I think we can set the tone of this festival with the noise that we make tonight,"

Source: Press Release