/** The fast codec applied to the frame-delta residual. */
export type FrameCodec = 'zstd' | 'lz4';
/**
 * Encode a sequence of equally-sized raw frames losslessly.
 *
 * @param frames - All frames concatenated, each exactly `frameSize` bytes.
 * @param frameSize - Bytes per frame (e.g. `width * height * channels`).
 * @param codec - Residual codec: `'zstd'` (denser) or `'lz4'` (faster).
 */
export declare function encodeFrames(frames: Uint8Array, frameSize: number, codec?: FrameCodec): Promise<Uint8Array>;
/** Decode frames produced by {@link encodeFrames} (same `frameSize`/`codec`). */
export declare function decodeFrames(data: Uint8Array, frameSize: number, codec?: FrameCodec): Promise<Uint8Array>;
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