Development In 2002,
Farah Khan worked as a choreographer for the musical
Bombay Dreams in London, which she felt presented a "clichéd and outdated version" of the Indian film industry. Later in 2006, Farah began to work on her next project, which was tentatively titled
Happy New Year. Amid speculations that
Shah Rukh Khan would star in
Happy New Year, the actor rejected the first draft of the film, upon which Farah's husband and editor
Shirish Kunder reminded her of the story she had conceived while in London. Farah completed writing the first script of
Om Shanti Om within two weeks. She set the first half in the 1970s as she felt the
Hindi films made during that period were much more influential than those made in other periods, particularly the 1980s, which she felt was a period when "the worst movies were made". She also included many references to the 1970s, which were also prevalent in films of that time. She said, "Everything in the first half is about the 70ssuch as the mother who overacts, mouthing clichéd dialogues. Then there are cabarets, badminton and other stuff popular during that era." Shah Rukh's costumes were designed by
Karan Johar, while
Manish Malhotra designed Padukone's costumes. The rest of the cast had their costumes designed by Sanjeev Mulchandani. In addition to directing the film, Farah co-wrote the story with
Mayur Puri and
Mushtaq Shiekh. She was also the film's choreographer. Puri wrote the screenplay and dialogues. Puri created the screenplay by writing his natural reaction to the characters as scenarios. He knew that despite being part of a crowd, junior artists do not want to be recognised as such, ruins their chances of landing a leading role in future. This was used in a sequence involving Shah Rukh and Talpade, who play junior artists. Puri blended different genres together in
Om Shanti Om, which he felt was challenging. He used his personal memories from childhood for creating the 1970s. Shirish Kunder was the editor, while V. Manikandan was the cinematographer.
Sabu Cyril was the film's
production designer. Sabu was first offered the
Mani Ratnam-directed
Guru (2007) at a time when
Om Shanti Om was being planned, but ultimately chosen the latter due to his earlier commitment to Farah for her future project. Farah used two particular dialogues in the film: "When you want something badly, the whole universe conspires to give to you" and "In the end everything will be ok and if its not ok its not the end". These were used as Khan felt that it reflected her philosophy in her life. Farah stated that the film's opening scene was her most favourite in it. In 2008, Puri felt his most favourite dialogue from the ones he wrote would be the Filmfare Awards speech.
Om is a Hindu mantra;
Om Shanti Om roughly translates to "Peace Be With You". The film opens with the grandeur shot of the most famous songs of
Karz that is
Om Shanti Om featuring
Rishi Kapoor and
SRK as a junior film artist standing in the crowd.
Casting plays the love interest of Shah Rukh Khan's character in her Hindi film debut. Shah Rukh was cast as the lead; he worked hard on his physique for a song sequence. He felt
Om Shanti Om was a "happy film". Farah was advised by
Malaika Arora to cast Padukone as the female lead, who was suggested by
Wendell Rodricks, under whom Padukone was working. She was cast without a screen test. Khan felt that she was "a beautiful, classic Indian beauty" who fit the role of an actor of the 1970s. In preparation for her role, Padukone watched several films of actresses
Helen and
Hema Malini to study their body language. Her character was modelled after Malini and nicknamed Dreamy Girl after her the latter's nickname as Dream Girl. Rampal was approached by both Khan and Shah Rukh at the latter's New Year's Eve party. Rampal was initially reluctant to do the role as he felt it was "too evil" for someone like him. With persuasion from Shah Rukh, he agreed. Rampal wore a mustache in the film which was suggested by Shah Rukh. A further red carpet scene featuring a number of actors making guest appearances, including
R. Madhavan and
Farhan Akhtar as well as
Prem Chopra,
Shakti Kapoor and
Vidhu Vinod Chopra was deleted from the film.
Principal photography Om Shanti Om was made on a budget of ₹40 crore. Farah was pregnant with triplets while filming and experienced difficulties while shooting, she would constantly vomit while directing the film. The film was shot entirely in sync sound; Farah dismissed rumours of Padukone's voice being dubbed. In 2015, however,
Mona Ghosh Shetty admitted to have dubbed for Padukone in the film. The fake fight scene involving a stuffed tiger was inspired by a similar scene in the film
Tarzan 303. A number of references to real life was also filmed, including a scene in which Om rescues Shanti from a fire, which was a spoof of
Sunil Dutt rescuing
Nargis from a fire on the sets of
Mother India (1957). For a shot involving a Filmfare Awards ceremony, Khan stood on the red carpet of an actual Filmfare Award ceremony and requested actors to dictate dialogues as she stated. The song "Dhoom Taana" has digitally altered guest appearances, which included
Sunil Dutt from
Amrapali (1966),
Rajesh Khanna from
Sachaa Jhutha (1970) and
Jeetendra from
Jay Vejay (1977). Farah wanted to film
Shakira for filming a special appearance had made her commit a few days for the role. Due to the uncertainty of her dates, the idea was scrapped. The visuals of the song "Deewangi Deewangi" where Om meets Mukesh, was heavily inspired by a scene featuring
Jeet and
Priyanshu Chatterjee from
Bengali film
Bidhatar Lekha, which was also based on the theme of reincarnation and coincidentally was released in April 2007. It was shot over a period of six days. Filming of the last sequence and the end-credit song was done in
Film City. Farah continued the tradition of featuring an end-credits song beginning with
Main Hoon Na (2004).
Om Shanti Om was produced by Shah Rukh's wife
Gauri Khan under their
Red Chillies Entertainment banner. While Marching Ants handled the publicity design, Gauri was the presenter. Shyam Kaushal, Amar Shetty and Shah Rukh were the action directors. The film's final reel length was 4013.94 ft (1223.45 m). ==Music==