/**
 * Whisper.cpp transcriber provider.
 *
 * Shells out to the `whisper-cpp` binary (install via `brew install whisper-cpp`).
 * Extracts audio to 16kHz mono WAV via ffmpeg, runs whisper.cpp with JSON output,
 * and parses word-level timestamps.
 *
 * whisper.cpp output format (--output-json-full):
 *   {
 *     "result": { "language": "en" },
 *     "transcription": [
 *       {
 *         "timestamps": { "from": "00:00:00,000", "to": "00:00:03,400" },
 *         "offsets": { "from": 0, "to": 3400 },
 *         "text": " Hello world.",
 *         "tokens": [
 *           { "offsets": { "from": 0, "to": 400 }, "text": " Hello", ... },
 *           ...
 *         ]
 *       }
 *     ]
 *   }
 *
 * Offsets are in milliseconds from the start of the source.
 */
import type { TranscriberProvider, TranscribeOptions, TranscribeResult } from '../types.js';
export declare class WhisperCppProvider implements TranscriberProvider {
    readonly id = "whisper-cpp";
    assertAvailable(): Promise<void>;
    transcribe(file: string, options?: TranscribeOptions): Promise<TranscribeResult>;
}
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