Sound Prompter is an AI-powered audio-generation plugin by Blace Plugins for Adobe After Effects and Premiere Pro. It creates sound effects and optional music directly from video content or text prompts, with all AI processing performed locally on the user's machine.

The plugin is designed to accelerate sound-design workflows by analyzing footage, generating synchronized audio and saving the resulting sound as WAV files.

• CORE FEATURES

• AI-generated sound effects from video
• Text-to-Sound generation
• Text + Video mode for synchronized sound design
• Optional music generation
• Fully local AI processing
• WAV file output
• Hardware acceleration
• Direct After Effects composition integration
• Premiere Pro support

• VIDEO-TO-SOUND GENERATION

Sound Prompter can analyze a video layer and generate sound effects that correspond to the visual content.

Blace Plugins describes the system as working with:

• Real-world footage
• 3D renders
• Motion design
• AI-generated video clips

Generated audio can therefore be used to rapidly establish a first sound-design layer for footage without manually searching through an SFX library.

• TEXT-TO-SOUND

Sound Prompter includes a dedicated Text-To-Sound mode for creating stereo sound effects and music from written prompts.

Official examples include prompts such as:

• Helicopter passing from left to right
• Acoustic rock beat
• Grenade explosion
• Blackbird song in a forest at dusk

This allows users to generate sounds that may not already exist in their local audio library.

• TEXT + VIDEO MODE

Text+Video mode combines visual analysis with prompt guidance.

This is designed to synchronize generated effects with the action or content visible in the footage while allowing the editor to influence the desired sound through text.

• PROMPT CONTROLS

The workflow supports:

• Positive Prompts
• Negative Prompts

Negative prompts can be used to suppress unwanted concepts, such as requesting sound effects while excluding music.

• GENERATION PERFORMANCE

Blace Plugins states that:

• A 5-second audio generation can take approximately 5 seconds
• A 10-second Text-To-Sound generation can take approximately 2 seconds on a mid-class GPU

Actual performance depends on the model and hardware being used.

• LOCAL AI PROCESSING

All processing runs locally through the Blace AI engine.

• Footage is processed locally
• Prompts are processed locally
• Generated audio is created locally
• User data does not need to leave the machine

This makes Sound Prompter different from cloud-based generative-audio services that require uploading footage to external servers.

• AUDIO OUTPUT

• Stereo audio generation is supported
• Generated files are stored as WAV
• Generated filenames use the _copy.wav suffix

The default generated-audio directory is:

<home>/Blace Plugins/Sound Prompter Generated Audio

• AFTER EFFECTS WORKFLOW

In After Effects, Sound Prompter can be applied to:

• Individual layers
• Precompositions
• Adjustment layers

Using an adjustment layer or subcomposition allows multiple visual layers to participate in the audio-generation process.

After generation:

• The WAV file is saved to disk
• The audio is automatically imported
• The generated audio is added to the composition above the effect layer

• PREMIERE PRO WORKFLOW

Premiere Pro is supported, but its workflow differs from After Effects.

Generated audio is saved to:

<home>/Blace Plugins/Sound Prompter Generated Audio

The generated WAV files are not automatically placed on the Premiere timeline.

Users must manually drag the audio into the timeline.

Blace Plugins recommends adding the generated-audio directory to Media Browser Favorites for faster access.

• HARDWARE ACCELERATION

Sound Prompter supports hardware acceleration on:

• Apple Silicon
• NVIDIA GPUs on Windows

• SYSTEM REQUIREMENTS

Official requirements currently distinguish between the following configurations:

• Windows + NVIDIA GPU with at least 12 GB VRAM — Supported
• Windows + non-NVIDIA GPU with at least 8 GB — Works, but described as very slow
• Apple Silicon + macOS Sequoia or newer + at least 32 GB RAM — Supported
• Other macOS configurations — Not supported

The Text+Video XXL model requires approximately:

• 18 GB VRAM

• SOFTWARE COMPATIBILITY

Adobe After Effects:

• After Effects 2026
• After Effects 2025
• After Effects 2024

Adobe Premiere Pro:

• Premiere Pro 2026
• Premiere Pro 2025

• UNREGISTERED VERSION

A trial / unregistered version is available.

The unregistered output contains:

• Audio gaps
• Beeps

Registering the plugin removes these trial limitations.

• BEST FOR

• Film & Video Editing
• AI Video
• Motion Graphics
• Sound Design
• Foley Prototyping
• Generating Custom SFX
• Trailer Editing
• Social Media Content
• 3D Animation
• Visual Effects
• Rapid Audio Mockups
• Editors Without Large SFX Libraries