Avidemux+cannot+use+that+file+as+audio+track |best| May 2026

Here’s a useful write‑up explaining the error “Avidemux cannot use that file as audio track”, why it happens, and how to fix it.

Why Avidemux Shows “Cannot Use That File as Audio Track”

Avidemux is a simple but powerful video editor. However, it is not a full audio converter or a multi‑track audio mixer.
When you try to add an external audio file (via Audio → Select Track or Main Track) and see:

“Cannot use that file as audio track”

it usually means one of these:

The audio file has a sample rate Avidemux cannot handle
(Avidemux works best with 44.1 kHz or 48 kHz – 22 kHz or 96 kHz often fail)
The audio file uses a codec Avidemux does not support for external tracks
(e.g., AAC from some containers, Vorbis, Opus, MP2)
The file is not purely audio – you may have accidentally chosen a video file as the audio source
The audio file is variable bitrate (VBR) MP3 – Avidemux can be picky with VBR in external files
The audio track in the file is not the first/default track – Avidemux sometimes only sees the first one

1. Check the audio file format

Ensure that your audio file is in a format supported by Avidemux, such as WAV, MP3, OGG, or AAC. If your file is in a different format, try converting it to a supported format using a tool like FFmpeg or Audacity.

Technical Implementation Note

This feature leverages the existing decoders already present in Avidemux. It essentially automates the "Save Audio" -> "Convert to WAV" -> "Load Audio" loop that advanced users currently do manually.

The error message "Cannot use that file as audio track" in Avidemux typically occurs because the software expects raw audio streams rather than audio stored within a container like MP4 or M4A when importing external tracks. Primary Causes of the Error

Unsupported Container Format: Avidemux cannot invoke demuxers for external audio tracks. If you try to add an .m4a or .mp4 file as an external track, it will fail because these are containers, not raw streams.

Encapsulation Issues: For AAC files, Avidemux specifically requires the audio to be in a raw ADTS or LATM envelope. Standard M4A files from iTunes or Audacity are often rejected for this reason.

Bitrate and Bit-Depth Restrictions: External audio tracks may fail if they use incompatible bit rates; specifically, some users find that audio rendered at 16-bit or lower works more reliably.

Metadata Corruption: Excess metadata at the head of a file (common in files from Traktor or similar DJ software) can confuse Avidemux, causing it to misinterpret frame headers and reject the file.

Version Mismatch: Older versions of Avidemux have more limited support for modern external audio streams. Using the latest release (e.g., version 2.8.1 or later) is often recommended as a first step to resolve these bugs. How to Fix the Error

To resolve this, you must provide Avidemux with a compatible raw audio format. 1. Convert to a Supported Raw Format

Convert your audio file to one of the following formats, which are natively supported as external tracks: MP3 (Constant Bit Rate is most stable). AC3. WAV (16-bit or 24-bit PCM). Raw AAC (ADTS-encapsulated). 2. Use FFmpeg for Quick Remuxing

If you have an M4A or MP4 file and want to strip it to a raw stream for Avidemux, you can use the FFmpeg command line tool:

# To extract raw AAC from an M4A container ffmpeg -i input.m4a -acodec copy -bsf:a aac_adtstoasc output.aac Use code with caution. Copied to clipboard 3. Adjust Metadata avidemux+cannot+use+that+file+as+audio+track

If you suspect metadata is the issue, you can try "cleaning" the file by running it through a simple converter or a metadata stripper. Removing the first several bytes of a file that contains Traktor metadata has been known to fix rejection issues.

Here’s a social media post (optimized for Reddit, forums, or Twitter) addressing the common Avidemux error: “Cannot use that file as audio track”.

Option 1: Reddit / Forum Style (Helpful & Detailed)

Title: Fix for Avidemux error: "Cannot use that file as audio track"

Post: Spent 20 minutes fighting this today. If you're trying to add an external audio track in Avidemux and getting the red error "Cannot use that file as audio track" — here’s why and how to fix it.

🔍 Why it happens:
Avidemux is very picky about audio formats for external tracks. It often rejects MP3, AAC, or M4A files, especially if the sample rate or codec doesn't match the video’s expected container.

✅ Solutions that work:

Re-wrap the audio (fastest fix)
Use ffmpeg (or Audacity) to convert the audio to WAV (16-bit PCM) or AC3.
FFmpeg command:
ffmpeg -i input_audio.m4a -c:a pcm_s16le output_audio.wav
Then load the WAV file in Avidemux → Audio → Select Track → External Track.
Use “Save as WAV” in Audacity
Import your audio → export as 16-bit PCM WAV. Works every time.
Match the video’s audio format
Go to Audio → Main Track → External Track, then choose Copy or Convert to PCM (not “Copy” if using MP3/AAC externally).
Don’t load the audio first
Open the video → Audio → Main Track → External Track → browse for your audio file. Never drag/drop an audio file first.

💡 Pro tip: Avidemux works best with PCM WAV or AC3 for external tracks. MP3/M4A almost always triggers that error.

Hope this saves someone the headache! 🎬

Option 2: Twitter / Mastodon (Short & Punchy)

Getting “cannot use that file as audio track” in Avidemux?

Fix: Convert your audio to 16-bit WAV first (Audacity or ffmpeg). Avidemux hates MP3/M4A as external tracks.

Also: Add via Audio → Main Track → External Track — never drag & drop.

#Avidemux #VideoEditing #LinuxVideo

Option 3: Quick troubleshooting checklist (for a forum reply)

Fix “cannot use that file as audio track” in Avidemux: Why Avidemux Shows “Cannot Use That File as

Convert audio to PCM WAV (16-bit)

In Avidemux: Audio → Main Track → External Track

Set Audio Output to “Copy” or “PCM”

Avoid MP3, AAC, M4A, OGG as external tracks

Make sure video container isn’t set to “Copy” for audio when using external

The error message "Cannot use that file as audio track" in Avidemux typically occurs because the software expects a raw, elementary audio stream rather than a file wrapped in a container. Common Causes

Container Incompatibility: Avidemux often cannot import audio files that are themselves inside containers like .mp4, .m4a, or .ogg as external tracks.

Unsupported Formats: While it supports common formats like WAV (16/24-bit), MP2, MP3, AC3, and DTS, it may struggle with certain AAC encodings unless they are in an ADTS or LATM envelope.

Version Issues: Older versions may have bugs with specific codecs that are fixed in newer nightly builds. Recommended Solutions Cannot use mp3 as audio track - avidemux.org

The error message " cannot use that file as audio track " in Avidemux typically occurs when the software's demuxer cannot properly parse the external audio file you are trying to add. This often stems from container incompatibility, metadata issues, or outdated software versions. avidemux.org Common Causes & Solutions Container Incompatibility (M4A/MP4/MKV)

: Avidemux cannot use audio that is already inside a container (like : You must provide the "raw" audio stream (e.g., ) or convert the file to a standard before importing. Metadata Interference

: Files from certain sources (like Traktor) may have metadata headers that confuse Avidemux, leading it to misread the file's sample rate or format.

: Use a tool to strip metadata or "clean" the audio file by re-saving it in a basic audio editor. Unsupported Bit Depth or Codecs

: Avidemux may reject specific high-fidelity formats, such as 24-bit WAV : Convert the audio to 16-bit WAV at 44.1kHz or 48kHz for the best compatibility. Outdated Software Version

: Older versions of Avidemux (e.g., 2.7.x) had known bugs related to external audio track recognition. : Upgrade to the latest stable release (e.g.,

or newer) or try a nightly build, which often includes fixes for these parsing errors. avidemux.org How to Correctly Add an External Track Cannot use mp3 as audio track - avidemux.org

"cannot use that file as audio track" typically occurs when attempting to add an external audio file that is in an unsupported container or format. This often happens with

files, as Avidemux requires "raw" audio streams or specific encapsulation for external tracks. avidemux.org Common Causes & Fixes Unsupported M4A/MP4 Containers

: Avidemux cannot use audio stored in an MP4 container (like

files) as an external track. You must provide the audio as a raw stream, such as ADTS-encapsulated AAC High Bit-Depth WAV Files : If you exported a 32-bit float WAV from an editor like , Avidemux may reject it. Converting the file to 16-bit PCM WAV usually resolves the issue. Metadata Interference : Large ID3 tags or Traktor metadata at the beginning of an

file can confuse Avidemux's probe. Removing the first several thousand bytes or cleaning the metadata can allow the file to be accepted. OGG/Vorbis Files

: The Vorbis codec is generally only supported when re-encoding an existing track, not as a direct external input. avidemux.org Supported External Formats

To avoid this error, ensure your external audio file is in one of the following formats: Cannot use mp3 as audio track - avidemux.org 3 Nov 2020 —

The "Cannot use that file as audio track" error in Avidemux typically occurs because the software is highly restrictive about the containers and codecs it accepts for external audio streams. Core Reasons for the Error

Muxed Containers (M4A, MP4, MKV): Avidemux cannot use audio files already "wrapped" in a container like .m4a or .mp4 as an external track. It lacks the internal demuxers to strip these for external loading. “Cannot use that file as audio track”

Non-Raw Formats: External tracks must generally be "raw" bitstreams. For example, while standard MP3s often work, AAC files must be in an ADTS- or LATM-encapsulated format, not a standard .m4a file.

Unsupported Codecs: Certain codecs, like Vorbis (.ogg), are only supported when re-encoding an existing track and cannot be loaded as a new external source.

Metadata Interference: Files with complex metadata (e.g., Traktor ID3 tags in MP3s) can confuse Avidemux, causing it to misread the sampling rate and reject the file.

Bit Depth/Rate Issues: Some versions of Avidemux struggle with 32-bit float WAV files; using 16-bit PCM WAV is more reliable. Common Fixes

Convert to WAV: The most reliable workaround is to convert your audio file to a standard 16-bit PCM WAV using a tool like Audacity.

Use MKVToolNix: If you just need to "marry" an audio file to a video without re-encoding, MKVToolNix-GUI is often a faster, more flexible alternative that accepts most containers.

Update Software: Ensure you are using the latest version (e.g., Avidemux 2.8.1 or newer), as some file handling bugs are fixed in nightly builds.

Extract Raw AAC: If you must use AAC, use a tool like FFmpeg to extract it from its container into a raw ADTS stream before loading. Cannot use mp3 as audio track - avidemux.org

The error "Cannot use that file as an audio track" in Avidemux typically occurs because the software is highly specific about the containers and formats it accepts for external audio. Unlike standard media players, Avidemux often requires "raw" streams rather than audio wrapped in common containers like MP4. Why This Happens

Container Conflict: Avidemux cannot use audio that is already muxed into a container like .m4a or .mp4 as an external track. It expects the raw stream (e.g., ADTS-encapsulated AAC).

Unsupported Formats: Certain formats like .ogg or Vorbis are often supported for re-encoding but may not be accepted as external input tracks.

Bit-Depth Issues: High bit-depth files (e.g., 32-bit WAV) can trigger errors; Avidemux generally prefers 16-bit or 24-bit WAV. Quick Fixes

Convert to WAV (16-bit): Use a tool like Audacity to export your audio as a 16-bit PCM WAV file. This is the most "universally acceptable" format for Avidemux.

Use Raw Streams for AAC: If you are using AAC, ensure it is in a raw format like .aac (ADTS-encapsulated) rather than an .m4a container.

Update Avidemux: Ensure you are using at least version 2.8.1 or a recent nightly build, as newer versions have improved demuxer support.

Alternative Tool: For quickly swapping audio tracks without re-encoding, MKVToolNix is often more flexible than Avidemux for handling various audio containers. How to Properly Add the Track

New user getting "Cannot use that file as audio track" - avidemux.org

Culprit #4: Corrupted or Unusual Headers

Avidemux uses a lightweight parser. It doesn't handle malformed ID3 tags, unusual sample rates (e.g., 44.1kHz is fine, but 8kHz might fail), or files that start with junk data.

The Fix: Remux the audio file into a clean container using FFmpeg or Audacity.

Using Audacity: Import the audio → Export → Export as WAV (or MP3 with CBR). This rewrites the header cleanly.
Using FFmpeg: ffmpeg -i problem_audio.mp3 -acodec copy clean_audio.mp3