AI Video Comes Out Silent. Here Is the Sound Design Workflow I Run on Every Shot

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Most AI-generated video comes out of the model with no real soundtrack: no room tone, no footsteps, no distant traffic, sometimes a generic music bed that has nothing to do with your scene. Sound design for AI video means building all of that by hand, in layers, after the clip already exists, not during generation. That is the one-sentence answer. The rest of this piece is the workflow I actually run to do it, shot by shot, on Lost Garden.

I found this out the expensive way. Early on I generated a corridor scene for Lost Garden, my AI-animated dark fantasy series, and it looked genuinely good. Torch light, drifting dust, a slow push down a stone hallway. I watched it on mute while I worked on something else, glanced up, and thought: that’s a shot. Then I put sound on it, just a placeholder ambience track I had...

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