The mystery has been solved: Icelandic act Sigur Ros’ Inni teaser is for a double live album and film.

Back in August the Icelandic artisans released a teaser for something called Inni. Now it has been revealed that Inni will be a double live album and a 75-minute film of their final gig right before their 2008 haitus.

It’s their second live DVD, after releasing 2007’s Heima, but this is even bigger. It captures the show over two nights at the London Palladium, their final two shows of their world tour on the back of Með suð í eyrum við spilum endalaust.

Inni was directed by Vincent Morisset (who also worked on Arcade Fire’s Mirior Noir) and debuted at the Venice Film Festival this year.

The live album part is a first for the band, and covers the full set (barring on song), recorded by the band’s engineer Birgir Jón Birgisson and clocks in at over 100 minutes.

Inni will be released through Inertia on November 4. You can see the trailer again at Sigur Ros’ UK website.