Most of the tools we test speed up work we already know how to do. Runway does something different: it changes what is actually in a clip. A wrong background, harsh lighting, an object that should never have been in frame, the kinds of problems that used to mean a reshoot or a long afternoon of effects work. We wanted to know if AI could fix those on real footage without making it look fake, so we put it to the test.
What it is
Runway is a kit of AI tools for video and images. You import a clip, pick the tool for the fix you want, and describe the change in plain language, or write your own prompt if no preset fits. When it works, it is as if the problem was never there. It handles text to video, image to video, a long list of AI effects, and more. The catch is the cost: it runs on credits, the top plan is around $90 a month, and those credits can vanish in seconds.
The test
We ran it on real clips, some already edited and some with mistakes we wanted repaired. Each fix took 30 to 45 minutes depending on the clip. The first was an interview with a student in front of a plain bush, and we asked Runway to put him in a field at sunset. We expected an obvious, fake looking backdrop. Instead it looked like he was really there, right down to the light on his face. The only problem was that the new background changed that lighting in a way that would not hold up in an interview, so we opened the lighting tool and adjusted where the light hit his face until it was seamless.
The second test had a stray lamp in the shot, so bright it pulled attention off the people and wrecked the lighting. We asked the lighting tool to remove it. The first attempt was nearly perfect, but we slipped and typed "warm lighting" by accident, which threw it off and cost double the credits to redo. Once the prompt was right, it took the lamp out as if it had never been there. That was the lesson of the whole test: the results are genuinely impressive, but every wrong move costs real money.
Pros
- The results do not look fake, the swapped background sat on the footage like it was shot there
- A huge range of tools and effects, all in one place
- You are not stuck with presets, you can write your own prompt for exactly what you need
- Gives you real control, you guide the fix and can keep adjusting it
- Fixes problems in a clip without making anyone reshoot
- It works on your actual footage, fixing the real person in frame instead of replacing them
- Handles things that used to mean a green screen or expensive effects work
Cons
- It burns through credits fast, and credits are money
- No confirmation step, one wrong word or stray click costs real money
- Higher quality output costs more credits
- The progress bar is unreliable, it lies and sometimes slips backward
How we'd use it
So where does it fit? We reach for Runway to meet a client's request without burning hours or calling for a reshoot, fixing a distracting background, repairing bad lighting, or taking out something that should not be in frame, so we can spend our time on the parts of the edit that actually matter. The hard line is this: we will never use it to generate whole clips and let the work turn into AI slop. It is a tool for fixing real footage, not a replacement for shooting it.
Is it staying in our kit? Yes. It is a genuinely useful tool for adjusting real clips, convincing enough that the fix disappears. But it will never take the place of making the footage itself. We use it to fix what is there, never to fake what is not. The story stays real, the cleanup just got easier.