A translated campaign rarely fails on meaning. It fails on cadence. Hindi promo copy tends to build to a stress at the end of the line; Kannada copy often lands earlier and lets the line settle. Keep the meaning, keep the word order, and the ear still hears something imported.
Four markets, four senses of humour
What reads as warm in one language reads as sarcastic in another. A teaser that depends on a pun will not survive translation, and forcing it produces the specific flatness audiences recognise instantly as advertising. Either find the equivalent joke or change the joke — do not explain it.
Casting is part of the writing
The voice carries meaning that the script cannot. A line written for a specific register of Kannada and then read in a neutral one is a different line. We cast the voice before the final draft, not after.
What actually transfers
Structure transfers. A campaign spine — the promise, the tension, the payoff — survives translation because it lives above the sentence. That is why we build the spine once and write the executions fresh in each language, rather than writing once and translating four times.
The test
Play the four versions to someone who speaks only one of the languages and ask which one feels like it was made for them. If the answer is not a different language depending on who you ask, the localisation has not happened yet.