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Runway Mastery — Video Generation and AI Post-Production Module 2 · Lesson 4 of 15

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Module 2 · Prompting — getting a real answer Lesson 4 of 15

How Runway reads what you type

Learning objective

Context, instructions and roles. It works in short clips, so continuity has to be built by you: the same reference frame, the same described light, the same lens. Understanding what the model can see — and what it has already forgotten — explains almost every disappointing answer you will get.

The concept

It works in short clips, so continuity has to be built by you: the same reference frame, the same described light, the same lens. This is the machinery. A model does not remember your last conversation the way a person does; it is handed text and asked to continue it well. Everything you want it to know has to be in that text, in the same window.

There is a difference between a system instruction — the standing context, set once — and a message, which is this request. Put your standing context in the standing place. "I am a final-year mechanical engineering student applying for data roles" belongs in your profile, not typed again at the start of every chat.

And there is a hard limit. When a conversation gets long enough, the earliest turns fall out of view. Symptoms: it contradicts an instruction you gave ten messages ago, or forgets the file you uploaded. The fix is a new conversation with a written summary of where you got to, not a longer argument.

Worked example

Keeping one reference image across six shots is what makes them feel like one place, and it is the single technique worth practising.

Your practice task

Ask the same question twice: once on its own, once after a short paragraph of setup about who you are and what you need. Compare the two answers and write down the difference. That gap is the thing you are learning to control.

Do this before moving on. Reading a solution teaches the shape of it; typing it teaches you.

Key takeaway

It works in short clips, so continuity has to be built by you: the same reference frame, the same described light, the same lens.

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Finish every lesson to unlock the certificate. Each one ends in a practice task — do them and the final project brief writes itself.