Mintplex-Labs/anything-llm · warning · Error

[Conversion Failed]: Could not convert file to .wav format!

Error message

[Conversion Failed]: Could not convert file to .wav format!

What it means

Defensive guard in #convertToWavAudioData — thrown if ffmpeg.convertAudioToWav returns falsy. Note: convertAudioToWav currently returns true or throws, never false, so this branch is effectively unreachable with the present implementation; it is a safety net for a future signature change.

Source

Thrown at collector/utils/WhisperProviders/localWhisper.js:76

    }

    return true;
  }

  async #convertToWavAudioData(sourcePath) {
    try {
      let buffer;
      const wavefile = require("wavefile");
      const { FFMPEGWrapper } = require("./ffmpeg");
      const ffmpeg = new FFMPEGWrapper();
      const outFolder = path.resolve(__dirname, `../../storage/tmp`);
      if (!fs.existsSync(outFolder))
        fs.mkdirSync(outFolder, { recursive: true });

      const outputFile = path.resolve(outFolder, `${v4()}.wav`);
      const success = await ffmpeg.convertAudioToWav(sourcePath, outputFile);
      if (!success)
        throw new Error(
          "[Conversion Failed]: Could not convert file to .wav format!"
        );

      buffer = fs.readFileSync(outputFile);
      fs.rmSync(outputFile);

      const wavFile = new wavefile.WaveFile(buffer);
      try {
        this.#validateAudioFile(wavFile);
      } catch (error) {
        this.#log(`Audio validation failed: ${error.message}`);
        throw new Error(`Invalid audio file: ${error.message}`);
      }

      // Although we use ffmpeg to convert to the correct format (16k hz 32f),
      // different versions of ffmpeg produce different results based on the
      // environment. To ensure consistency, we convert to the correct format again.
      wavFile.toBitDepth("32f");

View on GitHub (pinned to 526360e320)

Solutions

1. Recognize that convertAudioToWav already throws (error 24) on real failure — this message will not appear unless the contract changes.
2. If seen after refactoring, audit convertAudioToWav's return contract.

Example fix

// before
const success = await ffmpeg.convertAudioToWav(sourcePath, outputFile);
if (!success) throw new Error("[Conversion Failed]: ...");

// after — method throws on failure, drop the redundant check
await ffmpeg.convertAudioToWav(sourcePath, outputFile);

try {
  await ffmpeg.convertAudioToWav(sourcePath, outputFile);
} catch (e) {
  // conversion failures surface as the ffmpeg error (24), not this message
}

When it happens

Trigger: Only reachable if convertAudioToWav's contract changes to return false on failure. Today it always returns true or throws, so `if (!success)` is never true.

Common situations: Future refactor where convertAudioToWav starts returning a boolean; today this is dead code.

Related errors

• No base URL was set.
• No OpenAI API key was set.
• FFMPEG conversion failed
• Audio file sample rate is too low for accurate transcription
• Audio file duration exceeds maximum limit of 4 hours.

AI-assisted analysis of Mintplex-Labs/anything-llm@526360e320 (2026-08-13). Data as JSON: /api/errors/4cfe8cd9656bd531. Report an issue: GitHub.