import { z } from "zod";
import type { AgentTool } from "@kenkaiiii/gg-agent";
/**
 * trim_dead_air — single-call wrapper that detects head/tail (or all) silence
 * via `silencedetect` and produces a trimmed mp4. The agent normally chains
 * `detect_silence` + `write_edl` + `import_edl` for full silence cleanup;
 * this tool collapses the most-common case (chop the dead air at the start
 * and end of a recording) into one call.
 *
 * Modes:
 *   - "head-tail" (default): trim only leading and trailing silence
 *   - "all": cut every silence run >= minSilenceSec, re-encode the keeps
 *     concatenated. Same end-state as the EDL pipeline but produces a flat
 *     file the user can drop into any NLE.
 */
declare const TrimDeadAirParams: z.ZodObject<{
    input: z.ZodString;
    output: z.ZodString;
    mode: z.ZodOptional<z.ZodEnum<{
        all: "all";
        "head-tail": "head-tail";
    }>>;
    minSilenceSec: z.ZodOptional<z.ZodNumber>;
    thresholdDb: z.ZodOptional<z.ZodNumber>;
    paddingSec: z.ZodOptional<z.ZodNumber>;
    videoCodec: z.ZodOptional<z.ZodString>;
    crf: z.ZodOptional<z.ZodNumber>;
    audioBitrate: z.ZodOptional<z.ZodString>;
}, z.core.$strip>;
export declare function createTrimDeadAirTool(cwd: string): AgentTool<typeof TrimDeadAirParams>;
/**
 * Compute keep ranges from detected silences.
 *
 * mode='head-tail': only the leading silence (if any starts at ~0) and the
 *   trailing silence (if any ends at totalSec) are removed; everything in
 *   between is one big keep range.
 * mode='all': inverse of all detected silences — every gap between silences
 *   becomes a keep range.
 *
 * Padding extends each keep outward; clamped to [0, totalSec] and to its
 * neighbours so adjacent keeps never overlap.
 */
export declare function computeKeeps(silences: Array<{
    startSec: number;
    endSec: number;
}>, totalSec: number, mode: "head-tail" | "all", paddingSec: number): Array<{
    startSec: number;
    endSec: number;
}>;
/**
 * Build an ffmpeg filter_complex that trims to N keep ranges and concats
 * them into a single video+audio output labelled [v][a].
 */
export declare function buildTrimConcatFilter(keeps: Array<{
    startSec: number;
    endSec: number;
}>): string;
export {};
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