What It Does

Sound Prompter analyzes your video clips using AI running on your local machine and generates matching sound effects and music as .wav files. The plugin works on any footage type: real-world shots, 3D renders, motion graphics, or AI-generated content. Generated audio syncs to your video content and saves automatically to your project.

Key Features

Text-based prompting. Add masks to your layer and link them as positive or negative prompts. Type what sounds you want (or don’t want) directly into the mask names. For example, use negative prompts to suppress music when you only need sound effects.

Automatic output handling. Generated .wav files save to <home>/Blace Plugins/Sound Prompter Generated Audio and add to your composition automatically above the effect layer. In Premiere Pro, drag files manually from the output folder (add it to Media Browser favorites for quick access).

Flexible application. Apply the effect to individual layers, subcomps, or adjustment layers. Using an adjustment layer lets multiple video layers contribute to a single sound effect generation.

Fast iteration. First-time generation takes about a minute to load the AI model and render frames. After initialization, testing different prompts and settings runs much faster.

System Requirements

The plugin requires specific hardware for reasonable performance:

  • Windows with NVIDIA GPU (12GB+ VRAM): Recommended. Runs the XXL model smoothly (needs ~18GB VRAM).
  • Apple Silicon Mac with macOS Sequoia+ and 32GB+ RAM: Supported.
  • Other Windows systems: Very slow performance.
  • Intel Macs: Not supported.

Who It’s For

Motion designers who want to prototype sound design without leaving After Effects, or editors working on quick turnaround projects where temp audio needs to match video beats. Particularly useful when you have video locked but no audio yet, need placeholder sounds for client reviews, or want to explore sound directions before hiring a sound designer.

Pricing

$49.99 for a single-user license (regular price $59). One-time purchase, no subscription. Special upgrade pricing available for existing Blace Plugins customers (login to check eligibility).