/**
 * Buffer input data and convert to AudioData with fixed frame count.
 * Matches the WebCodecs audio configuration.
 *
 * @param framesPerChunk Number of audio frames per AudioData instance
 * @param fps The video fps (used for calculating buffer limits)
 */
export declare function createAudioTrackBuf(framesPerChunk: number, fps?: number): (timestamp: number, trackAudios: Float32Array[][]) => AudioData[];
