When After Effects shows no sound, the issue usually stems from muted outputs, incorrect audio hardware settings, or misaligned timeline configurations. This guide explains how to verify your playback device, route audio correctly, and inspect work area and render settings to restore sound. You will find actionable checks for project settings, preferences, and system audio so you can isolate and fix playback silences quickly.
Confirm System and Hardware Audio
Start by confirming your system audio is active and After Effects is allowed to access it. Operating system audio levels, sample rates, and device choices in After Effects can block sound even when the project is set up correctly. Checking these items first prevents wasted troubleshooting downstream.
Operating System Volume and Output
- Ensure master volume is up and not muted at the OS level.
- Verify the correct playback device is selected in Sound Preferences.
- Confirm that the application-specific volume for After Effects is not muted or lowered in Volume Mixer or Audio MIDI Setup.
After Effects Audio Hardware Settings
In After Effects, open Preferences > Audio and review the device and buffer choices. These settings tell After Effects which sound card and driver to use for playback and recording. If the selected device is unavailable or misconfigured, you may hear nothing even when speakers are connected.
| Attribute | Verified Detail | Source Type |
|---|---|---|
| Default Audio Device | System Output selected in OS Sound Settings | System Preference |
| After Effects Audio Device | Device name matching active playback hardware in AE Audio Preferences | Application Preference |
| Buffer Size | Lower values reduce latency but can cause dropouts; higher values increase stability | Performance Trade-off |
| Sample Rate | Match project and system sample rate (for example, 48000 Hz or 44100 Hz) | Project Requirement |
Check Timeline and Layer Audio
No sound in After Effects can also arise from muted layers, disabled audio switches, or an incomplete work area. Because timeline controls are per layer and per composition, a quick audit often restores playback audio.
Layer Mutes and Switches
- Toggle the Mute switch for individual layers and verify no global mute is applied at the composition level.
- Enable the Audio Switch for layers that contain audio so they appear in the composition.
- Collapse switches to confirm the Audio button is visible and active on each layer row.
Work Area and Preview Range
Set the work area to span the portion of the timeline where audio exists. Press Num0 to preview and check the yellow playhead; if the work area excludes audio layers, preview will play silence. Drag the work area markers to cover the full duration of your audio and RAM preview within that range.
Inspect Media and Interpret Footage
The media itself can be the reason After Effects has no sound. Containers, codecs, and channel layouts sometimes confuse the import process, leading to missing audio tracks or misinterpreted formats. Inspecting footage on import and after editing can resolve silent surprises later.
Verify Imported Sources
- Open Footage Settings to inspect audio channels and sample rates.
- Listen to audio directly from the Footage panel using the Spacebar or RAM Preview.
- Check whether audio is disabled at the composition level when relinking or replacing footage.
Interpret Footage and Relink
If a clip shows as silent, use Interpret Footage to assign the correct format or convert to an alternate file such as WAV or PCM-based MOV. Replacing or relinking media should maintain channel mapping so that sound resumes where expected.
Adjust Composition and Output Settings
Composition settings and output module choices can strip audio if mismatched. Frame size and pixel aspect ratio do not affect sound, but audio sample rate, bit depth, and output module do. Review these whenever playback remains silent despite correct source files.
Composition Settings Check
Open Composition Settings and verify duration, frame rate, and audio sample rate align with your source. Creating a comp narrower than the audio duration can cut off sound at the end, while mismatched sample rates may cause playback glitches.
Output Module and Render Settings
During render, the Output Module determines how audio is written. If the format drops audio or the template is set to Video Only, the resulting file will have no sound. Choose Lossless or a format that supports audio, and confirm Audio Output is enabled in the Render Queue.
Render Queue and Export Checks
The final export is the last checkpoint before sharing. Even when composition playback works, render settings can silently discard audio. Verifying Output Module templates and render range ensures your finished file contains sound.
Output Module Presets
- Enable Audio in the Render Queue output module.
- Pick a container that supports audio, such as AVI, QuickTime, or H.264 MP4 with AAC.
- Confirm Audio Output is not disabled in Advanced settings.
RAM Preview vs Final Render
RAM Preview uses system audio routing, while render follows Output Module settings. If RAM Preview plays but export does not, check the Output Module template and ensure Audio Output is active and mapped to the correct channels.
Summary Checklist and Common Fixes
Use this quick checklist when After Effects has no sound. Follow the steps in order, verifying system settings, layer states, work area coverage, and render choices. Most silent playback issues are resolved by correcting audio device selection, enabling layer audio, expanding the work area, or switching to a lossless output module that preserves audio.
| Step | Action | Expected Result |
|---|---|---|
| 1 | Check OS volume and confirm After Effects has audio permissions | System sound plays in other apps and AE |
| 2 | Open AE Audio Preferences and verify device and sample rate | Playback device matches active speakers and sample rate aligns with project |
| 3 | Mute/Unmute layers and enable Audio switches
|
Audio visible and preview covers entire duration |
| 4 | Inspect Footage and Interpret Footage if needed | Audio channels visible and playable |
| 5 | Confirm Output Module includes audio and render | Exported file contains sound |
When to Investigate Codecs and Containers
Some codecs and containers handle audio differently or require additional system components. If sound works in RAM Preview but not in export, prioritize the Output Module and codec choices. Consider switching to an intermediate codec like PCM WAV or AIFF for troubleshooting, then recompress to your target delivery format once audio is confirmed.
Final Notes
After Effects no sound issues are usually reproducible once the root cause is identified. Consistent use of verified settings for audio hardware, work area, layer audio, and output modules reduces silent playback and export failures. These checks provide a durable routine you can apply to any project, helping you maintain audio integrity across versions and pipelines.