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.
"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 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
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:
💡 Pro tip: Avidemux works best with PCM WAV or AC3 for external tracks. MP3/M4A almost always triggers that error. avidemux+cannot+use+that+file+as+audio+track
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:
If you’ve run into the "Cannot use that file as audio track" error in Avidemux, it usually means the software is struggling with the file's container format or a sample rate mismatch, even if the audio itself seems fine.
Here is a quick guide to understanding why this happens and how to fix it. Why it happens
Avidemux is picky about external audio tracks. The error typically triggers for two reasons:
Format Incompatibility: While Avidemux supports many codecs (like MP3 or AAC), it often fails to "mux" (combine) them if they are wrapped in certain containers or have unusual headers.
Sampling Rate Issues: If your video is 44.1kHz and your audio track is 48kHz, Avidemux sometimes rejects the link to prevent sync issues. How to fix it 1. Standardize the Audio File
The most reliable fix is to convert your audio file into a "clean" version before importing it.
Use a tool like Audacity or an online converter to export the audio as a WAV (uncompressed) or a standard MP3.
WAV files have the highest success rate because they lack the complex metadata that often confuses Avidemux. 2. Check the "Audio Configuration"
Before importing the external file, ensure your video's audio output is set correctly:
In the left-hand sidebar, under Audio Output, try changing "Copy" to MP3 (lame) or AAC (lav). This feature leverages the existing decoders already present
Click Filters under Audio Output and ensure the Resampling checkbox is either off or matches your source file’s bitrate. 3. Use the "Append" Method
Sometimes Avidemux prefers it if you don't use the "Select Track" menu immediately.
If you have the audio and video as two separate files, try opening the video first, then go to File > Append (though this is primarily for joining files, it can sometimes bypass header checks). 4. The "Muxer" Workaround
If Avidemux simply won't cooperate, use a dedicated muxing tool like MKVToolNix. Drag your video and your audio file into MKVToolNix. Uncheck the original audio and keep the new audio. Hit "Start multiplexing."
Once you have this new file, open it in Avidemux to do your final edits.
Pro Tip: Always make sure the audio file duration matches your video duration before importing, or you’ll end up with a "drifting" sync error that’s much harder to fix later.
Since transcoding is happening anyway, the feature could include a checkbox in the dialog: "Normalize audio levels during conversion." This solves the common secondary problem where external audio files are too quiet or loud compared to the video.
The message "Avidemux cannot use that file as an audio track" is rarely a sign of a broken file. It is almost always a sign of setting mismatch between your Audio Output codec and your Output Container.
The Golden Rule to Remember: Before adding an external audio track, ask yourself:
If you answer these three questions correctly, Avidemux will work beautifully. If you ever get stuck, switch to MKV container and Audio Output = PCM – that combination will save you every time.
Happy editing.
Here’s a post you can use on forums like Reddit, VideoHelp, or Super User:
Title: Avidemux error: "Cannot use that file as audio track" – how to fix?
Post:
Hi everyone,
I’m trying to replace or add an external audio track in Avidemux, but when I go to Audio → Select Track and choose my file (MP3 or M4A), I get the error:
Cannot use that file as audio track
Both the video file and the audio file play fine in other players. I’ve tried: Option 1: Reddit / Forum Style (Helpful &
Has anyone found a reliable workaround? Is there a specific format Avidemux expects?
Thanks!
If you want a shorter version for social media (e.g., Twitter/Mastodon):
Getting "cannot use that file as audio track" in Avidemux when adding external audio. File plays fine elsewhere. Tried WAV, MP3 CBR, matching sample rate. Any fix? #Avidemux
This is a story about a filmmaker named Elias who encounters a stubborn technical error while finishing his masterpiece.
The clock in Elias’s studio ticked toward 3:00 AM, the rhythmic sound mockingly keeping pace with the pulsing vein in his temple. He was one click away from finishing The Silent Echo, a documentary three years in the making. All he needed to do was mux the final, remastered orchestral score into the video container.
He opened Avidemux, selected his video file, and navigated to the "Select Track" menu for the audio. He located the high-fidelity file he’d spent weeks perfecting, clicked "Open," and waited for the familiar green light of progress.
Instead, a cold, grey dialogue box appeared like a tombstone on his screen: "Cannot use that file as audio track."
Elias blinked. He tried again. The same blunt rejection stared back at him. He checked the format—it was a standard WAV file. He checked the sample rate—48kHz, perfectly normal. He even tried renaming the file, as if the software simply didn't like the name "Final_Score_v27_REAL_FINAL."
"Come on," he whispered to the glowing monitor. "I’ve given you everything. Why won't you take it?"
The silence of the room felt heavier. He began a frantic dance of troubleshooting. He converted the audio to MP3, then to AAC, then back to a different flavor of WAV. Each time, Avidemux remained an unyielding gatekeeper. It wasn't just a technical glitch; it felt like a personal snub from the machine he had trusted with his vision.
Desperate, he dove into the digital underworld of forum threads from 2012. He scrolled through endless pages of "Me too!" and "Fixed it by restarting," until he found a cryptic post by a user named CodecGhost.
“Avidemux is a picky eater,” the post read. “Sometimes it hates the metadata more than the data. If the header is bruised, the door stays locked.”
Elias realized he had been exporting the audio with complex "extensible" headers from his professional workstation. He stripped the file down to its barest essentials—no tags, no metadata, just raw, unadorned pulse-code modulation.
With trembling fingers, he loaded the stripped file. He clicked "Open."
The dialogue box stayed hidden. The track appeared in the slot, ready and waiting. Elias hit "Save," and watched the progress bar sprint toward 100%. As the sun began to bleed through his blinds, the "File saved successfully" notification appeared—the most beautiful sentence he had ever read.
If the user clicks [Convert & Load]: