Function getAudioMetadata

apps/sim/lib/audio/extractor.ts:187–207

(buffer: Buffer, mimeType: string)

 * Get audio metadata using ffprobe
 */
export async function getAudioMetadata(buffer: Buffer, mimeType: string): Promise<AudioMetadata> {
  ensureFfmpeg() // Initialize FFmpeg/ffprobe
  const tempDir = os.tmpdir()
  const inputExt = getExtensionFromMimeType(mimeType)
  const inputFile = path.join(tempDir, `ffprobe-input-${Date.now()}.${inputExt}`)

  try {
    // Write buffer to temporary file
    await fs.writeFile(inputFile, buffer)

    // Get metadata using ffprobe
    return await getAudioMetadataFromFile(inputFile)
  } finally {
    // Clean up temporary file
    try {
      await fs.unlink(inputFile).catch(() => {})
    } catch (error) {
      // Ignore cleanup errors
    }
  }
}

/**
 * Get audio metadata from a file path using ffprobe