Film scripts (known as dialogues in Indian English) and their song lyrics are often written by different people. Earlier, scripts were usually written in an unadorned Hindustani, which would be understood by the largest possible audience. Post-Independence, Hindi films tended to use a colloquial register of Hindustani, mutually intelligible by Hindi and Urdu speakers, but the use of the latter has declined over years. Some films have used regional dialects to evoke a village setting, or archaic Urdu in medieval historical films. A number of the dominant early scriptwriters of Hindi cinema primarily wrote in Urdu; Salim-Javed wrote in Urdu script, which was then transcribed by an assistant into Devanagari script so Hindi readers could read them. During the 1970s, Urdu writers Krishan Chander and Ismat Chughtai said that "more than seventy-five per cent of films are made in Urdu" but were categorised as Hindi films by the government. Encyclopedia of Hindi Cinema noted a number of top Urdu writers for preserving the language through film. Urdu poetry has strongly influenced Hindi film songs, whose lyrics also draw from the ghazal tradition (filmi-ghazal). According to Javed Akhtar in 1996, despite the loss of Urdu in Indian society, Urdu diction dominated Hindi film dialogue and lyrics.
Film scripts (known as dialogues in Indian English) and their song lyrics are often written by different people. Earlier, scripts were usually written in an unadorned Hindustani, which would be understood by the largest possible audience. Post-Independence, Hindi films tended to use a colloquial register of Hindustani, mutually intelligible by Hindi and Urdu speakers, but the use of the latter has declined over years. Some films have used regional dialects to evoke a village setting, or archaic Urdu in medieval historical films. A number of the dominant early scriptwriters of Hindi cinema primarily wrote in Urdu; Salim-Javed wrote in Urdu script, which was then transcribed by an assistant into Devanagari script so Hindi readers could read them. During the 1970s, Urdu writers Krishan Chander and Ismat Chughtai said that "more than seve.nty-five per cent of films are made i.n Urdu" but were categorised as Hindi films by the government. Encyclopedia of Hindi Cinema noted a number of top Urdu writers for preserving the language through film. Urdu poetry has strongly influenced Hindi film songs, whose lyrics also draw from the ghazal tradition (filmi-ghazal). According to Javed Akhtar in 1996, despite the loss of Urdu in Indian society, Urdu diction dominated Hindi film dialogue and lyrics.