`We were in South Africa where Ranbir Kapoor and Katrina both had to do stunt scenes. Ranbir was performing his own stunt. I couldn't get duplicate for one person, so she had to undergo a little bit of training to do the stunts, which were not very hectic,` Basu told IANS from Mumbai on phone.
The film is set to release next year.
Basu, whose last film -- the highly acclaimed and commercially successful "Barfi!" -- came two years ago, is currently seen judging talent show `India's Best Cinestars Ki Khoj` on Zee TV.
He had earlier judged `India's Best Dramebaaz`, but finds the "judging" job stressful this time.
"The talent is good but this is stressful then the last show I did. The contestants in 'India's Best Dramebaaz' were kids and it was fun to judge them but this time they are grown up adults and it's been stressful," he said.
