Unsupported audio format
Use WAV, MP3, M4A, AAC, OGG or FLAC. Renaming an extension does not convert the underlying codec; export a new file from a trusted audio application instead.
Practical browser fixes
Audio Analysis Troubleshooting
Use the message shown beside your file to identify the problem. A failed analysis does not mean your audio was uploaded.
- Decode & format fixes
- File-limit guidance
- Memory & browser help
- Local-only processing
Match the error to a fix
The browser could not decode the file
The container may use a codec unavailable in this browser, or the file may be damaged. Try a current browser, play the file locally to confirm it is valid, or export a standard WAV or MP3 copy.
File larger than 100 MB
Export a shorter section or a smaller local copy. The limit reduces memory pressure because decoding happens on your device.
Track longer than 20 minutes
Analyze a representative section no longer than 20 minutes. Avoid trimming away every rhythmic or harmonic passage you need the detector to hear.
Analysis stopped or the tab ran out of memory
Close memory-heavy tabs, reduce the batch size, try a shorter file and run one track at a time. Mobile devices can reach their memory limit sooner than desktop computers.
No valid analysis result
Silence, corrupted samples or an internal detector failure can prevent a result. Confirm the file contains audible material and try another export. Speech, drums or noise may instead return a plausible but unreliable best-effort key.
Analysis was cancelled
Cancellation stops the active Worker and marks queued work as cancelled. Choose the files again when you are ready to restart.
Still seeing an error?
Note the browser, operating system, file extension, approximate size and the exact on-screen message. Do not email the audio file unless you intentionally choose to share it. Contact support@tempokeyfinder.com.