import { ICompiler, IFragment, ISource, StreamRef, IPlaceholder, SelectStreamRef } from './Compiler';
/**
 * @category composable
 */
export declare type FilterParams = Record<string, string | number>;
/**
 * @category composable
 */
export declare class InputStreamRef extends StreamRef {
    protected _name: string;
    input: Input;
    get name(): string;
    constructor(input: Input);
    named(...names: string[]): this;
    compile(compiler: ICompiler): void;
    clone(): InputStreamRef;
}
/**
 * Represents an input (like a video file or a lavfi filter).
 * ```typescript
 * const input = new Input( 'path/to/file.mp4' );
 * ```
 *
 * Optionally can also receive an array of arguments to include before the input (for example, for seeking the media).
 * ```typescript
 * // Starts the input at the 1-minute mark.
 * const input = new Input( 'path/to/file.mp4', [ '-ss', 60 ] );
 * ```
 *
 *
 * @category composable
 */
export declare class Input implements ISource {
    url: string;
    index: number;
    options: (string | number | IPlaceholder<string | number>)[];
    outputs: InputStreamRef[];
    get dependencies(): IFragment[];
    constructor(url: string, options?: (string | number | IPlaceholder<string | number>)[]);
    protected compileOptions(): string[];
    compile(compiler: ICompiler): void;
    select(selector: string): SelectStreamRef;
    named(...names: string[]): this;
    clone(): Input;
    materialize(): string;
    [Symbol.iterator](): IterableIterator<InputStreamRef>;
    static isStream(obj: any): obj is Input | InputStreamRef;
    static isStreamLike(obj: any): obj is Input | InputStreamRef | string;
}