<span class=normal>Additional CG and Compositing Work <BR><br><p class=clear>&nbsp;</p>In addition to the song sequence, the film also required certain visual element replacements like the chase sequence above. Although the film revolves around Delhi a few scenes were shot in Mumbai, in these shots elements like Mumbai taxis were replaced digitally with cars. Apart from digital clean-ups and replacements, various other CG work was included like, digitally creating gun-fire flashes in action sequences better known as muzzle flashes, rag doll animation and television picture-in-picture better known as PIPs. A PIP is basically digitally adding footage onto a visible television screen, or a computer monitor that is visible on the screen space. </span><BR><BR><br><p class=clear>&nbsp;</p><br><p class=clear>&nbsp;</p><amp-img width=1.33 height=1 layout=responsive src=https://images.bollywoodhungama.com/img/feature/11/jul/delhib9.jpg></amp-img><br><p class=clear>&nbsp;</p></p>