/**
 * normalize-size.ts — picking the canvas for a mixed-size concat.
 *
 * The demuxer concat path uses `-c copy`, which assumes every segment shares
 * stream parameters. When they do not, ffmpeg does NOT error: it emits a master
 * with a wrong duration and frame rate that looks entirely plausible (a 3x15s
 * mixed 1080p/720p film once came out as 108s at ~10fps, rc=0, and nothing
 * downstream noticed). So the prep pass re-encodes every segment to one size —
 * and this module decides which size that is.
 */
/**
 * The size to normalise a mixed-size concat to: whichever frame size the most
 * segments already have, ties broken toward the LARGER (so a 50/50 split keeps
 * the detail rather than discarding it).
 *
 * PURE — the probing lives in `stitch`. Exported for the unit tests, because the
 * cost of getting this wrong is invisible: ffmpeg does not error on a mixed
 * concat, it emits a master with a wrong duration and frame rate that looks
 * plausible.
 */
export declare function majoritySize(sizes: ReadonlyArray<{
    width: number;
    height: number;
}>): {
    width: number;
    height: number;
};
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