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FixPitch

Natural sound pitch. Any speed. Right inside After Effects.

Windows & MacOS supported.

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$17.99
  $14.40
Special price valid until October 16, 2026
  • Free Trial
Description
Requirement: FFmpeg

FixPitch runs on FFmpeg — a free, open-source tool for audio/video processing. It’s not bundled with the script and needs to be installed separately (one-time setup).

  • Available for Windows and macOS
  • Completely free and open source
  • A step-by-step installation guide is included with the script
The problem

The Feature After Effects Never Got

Here’s a thing: pitch-preserving time stretch has existed in almost every audio and video tool for years — Premiere has it, DaVinci has it, even free audio editors have it. After Effects? Still nothing. Speed up a clip and you get chipmunk voice; slow it down and it’s a slow-motion growl. For years the official answer has been “just round-trip it through another app.”

FixPitch ends that.

It does this one simple thing — fixing audio pitch after a speed change — without ever leaving After Effects.

Main Features

01

One-Click Auto Pitch

Automatically detects the layer’s Time Stretch or Time Remap settings, calculates the correct speed factor, and fixes the pitch — no manual math required.

02

Full Time Remap Support (Multi-Segment)

Handles complex speed ramps with multiple keyframes. Each segment between keyframes is pitch-corrected individually, then seamlessly joined back into one audio track.

03

Manual Override Mode

A slider + numeric field let you dial in a custom speed factor (as a multiplier “x” or a percentage “%”), independent of the layer’s actual Time Stretch/Remap — for creative control or fine-tuning.

04

Precomp Support

Works even when the audio source is inside a nested composition — the precomp is automatically rendered before processing, no manual pre-rendering needed.

05

Non-Destructive Workflow

The original layer’s audio is muted, never deleted or altered. Compare the fixed and original audio side by side, or roll back anytime.

06

Lossless Processing Pipeline

All intermediate steps use lossless PCM WAV. An optional 320kbps MP3 export is available for the final file.

07

Smart File Management

Output files are automatically organized next to your project (or a custom folder of your choice), with automatic cleanup of temporary files.

08

Built-in Readiness Indicators

Instant status checks for scripting permissions and ffmpeg availability — you always know if something needs to be fixed before you hit run.

09

Free Ongoing Updates

FixPitch is under active development. FFmpeg’s audio engine can do far more than pitch correction — and new features built on top of it are already on the roadmap, delivered as free updates.

Why does FixPitch need FFmpeg?

Changing playback speed while keeping the original pitch isn’t a simple filter — it requires rebuilding the audio waveform through a dedicated time-stretching algorithm. After Effects’ native audio engine doesn’t include this kind of processing. FixPitch hands this calculation to FFmpeg, a free, open-source audio/video engine used by professional tools industry-wide, then brings the corrected audio straight back into your composition.

  • 0:00 - 0:22 - Readiness indicators
  • 0:22 - 0:50 - Auto Pitch button
  • 0:50 - 1:14 - Time remapping
  • 1:14 - 1:29 - Manual mode
  • 1:29 - 1:46 - Settings menu

Discussions

Want to talk about it?

Head over to r/aescripts to chat with fellow users about this product.

Need Support?

Please open a support ticket to be connected directly with the author of this product

Version History

1.0 -

Sep 30, 2026

- Initial release

Compatibility

After Effects

2027, 2026, 2025, 2024, 2023, 2022, 2021, 2020, CC 2019

EULA

END USER LICENSE AGREEMENT

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Updated: Oct 21, 2025 1:35 AM

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