How to generate VFX in existing clip?

Question

Hi, I'm trying to generate VFX within live action clips. I'm using the image-to-video tool, uploading 5 seconds of real footage as a reference (I've tried both composition and camera, selecting a cinematic style).
I've used both text and JSON prompts, but the results are always far from the target.
I'm attaching the reference clip and just a few examples.

Am I using the wrong type of request, function, or process?

Thanks in advance!

JN

Kartika Rawat · Accepted Answer

Hi Kartika,Thanks for the reply, and sorry for the delay, but I've been away for a few days.I tried uploading the clip as a reference, but the effect is still the same as the clips attached in the previous post.Isn't there a video-to-video workflow, as suggested in the first reply?The Image-to-Video feature is designed for creative motion generation, not precise VFX integration, which is why results differ from your target. You may need to use After Effects for VFX compositing. ^KR

paulwalters · Answer

You’re using the wrong process — image-to-video can’t overlay VFX on live clips. Use a video-to-video workflow or generate VFX separately and composite them in After Effects/Nuke.

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