export type FrameTransform = (frame: VideoFrame) => Promise<VideoFrame>;
declare global {
    interface MediaStreamTrackProcessorInit {
        track: MediaStreamTrack;
        maxBufferSize?: number;
    }
    interface MediaStreamTrackProcessor {
        readonly readable: ReadableStream<VideoFrame>;
    }
    var MediaStreamTrackProcessor: {
        prototype: MediaStreamTrackProcessor;
        new (init: MediaStreamTrackProcessorInit): MediaStreamTrackProcessor;
    };
    interface MediaStreamTrackGeneratorInit {
        kind: 'video' | 'audio';
    }
    interface MediaStreamTrackGenerator extends MediaStreamTrack {
        readonly writable: WritableStream<VideoFrame>;
    }
    var MediaStreamTrackGenerator: {
        prototype: MediaStreamTrackGenerator;
        new (init: MediaStreamTrackGeneratorInit): MediaStreamTrackGenerator;
    };
}
/**
 * A running Insertable-Streams stage. `track` is the generator track carrying
 * transformed frames; `dispose` aborts the pipe and stops the generator so the
 * stage can be torn down (e.g. on a LiveKit camera flip) without leaking the
 * generator and its pull on the source track.
 */
export type DisposablePipeline = {
    track: MediaStreamTrack;
    dispose: () => void;
};
export declare const applyEffectToTrack: (track: MediaStreamTrack, transform: FrameTransform) => DisposablePipeline;
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