refactor: switch index from SQLite to JSON with relative paths

manage_index.py:
- Complete rewrite from SQLite to JSON file format
- All file paths stored as relative (relative to video directory)
- Moving the entire video directory does not break references
- Paths outside video dir stored as absolute (editable in text editor)
- Same 8 subcommands, same CLI interface

SKILL.md:
- Step 5: SQLite schema replaced with JSON structure example
- Verification checklist: .vedit.db → .vedit.json

README.md + README.zh.md:
- Features: 'SQLite database' → 'JSON file with relative paths'
- Project structure: 'SQLite index management' → 'JSON index management'
- 'Index Database' section → 'Index File' with relative path explanation

.gitignore:
- *.vedit.db → *.vedit.json

.gitignore

@@ -17,8 +17,8 @@ Thumbs.db
 *.swo
 *~
 
-# Index databases (runtime artifacts, not source)
-*.vedit.db
+# Index files (runtime artifacts, not source)
+*.vedit.json
 
 # Extracted clips and frames (runtime artifacts)
 *_clips/

README.md

@@ -8,7 +8,7 @@ An agent skill that helps plan video edits through iterative dialogue — transc
 
 - **Audio transcription** — bundled [funasr-script](https://github.com/modelscope/FunASR) with Fun-ASR-Nano (default, high quality, Chinese-optimized) and SenseVoice (fast preview) models
 - **On-demand frame extraction** — ffmpeg-based clip cutting (`-c copy`) + scene-change detection + uniform sampling, with hardware acceleration (CUDA/NVDEC preferred)
-- **Artifact indexing** — SQLite database tracks all transcriptions, clips, and frames to avoid duplicate processing across sessions
+- **Artifact indexing** — JSON file tracks all transcriptions, clips, and frames with relative paths to avoid duplicate processing across sessions
 - **Vision analysis guidance** — binary-search-style frame sampling strategy; works with any vision-capable model the agent's runtime provides
 - **Iterative edit plans** — Markdown-table output (timecodes, segment descriptions, actions, transitions, notes) refined through follow-up questions
 - **Agent-agnostic** — no platform-specific tool names; works with any agent framework (Hermes, Claude Code, Codex, etc.)
@@ -81,20 +81,20 @@ video-edit-planner/
 │   ├── frames/
 │   │   └── extract_frames.py         # Clip extraction + frame sampling (ffmpeg wrapper)
 │   └── index/
-│       └── manage_index.py           # SQLite index management (8 subcommands)
+│       └── manage_index.py           # JSON index management (8 subcommands)
 └── references/
     └── frame-extraction-guide.md     # Vision model token costs, resolution/batch guidance
 ```
 
-## Index Database
+## Index File
 
-All processing artifacts are tracked in an SQLite database (`<video_stem>.vedit.db`) stored next to the video file:
+All processing artifacts are tracked in a JSON file (`<video_stem>.vedit.json`) stored next to the video file:
 
-- **transcription** — JSON path, track index, duration
+- **transcriptions** — JSON path, track index, duration
 - **clips** — start/end time, file path, extraction reason
 - **frames** — timestamp, file path, scene score, extraction method
 
-This avoids re-transcribing or re-extracting frames for the same video across sessions.
+All paths are stored as **relative paths** (relative to the video directory), so moving the entire directory does not break references. The JSON file is human-readable and editable with any text editor.
 
 ## License
 

README.zh.md

@@ -8,7 +8,7 @@
 
 - **音频转录** — 内置 [funasr-script](https://github.com/modelscope/FunASR)，默认使用 Fun-ASR-Nano（高质量，中文优化），SenseVoice 可用于快速预览
 - **按需抽帧** — 基于 ffmpeg 的片段剪辑（`-c copy`）+ 场景变化检测 + 均匀采样，优先使用硬件加速（CUDA/NVDEC）
-- **产物索引** — SQLite 数据库记录所有转录、剪辑片段和帧图片，避免跨会话重复处理
+- **产物索引** — JSON 文件记录所有转录、剪辑片段和帧图片，使用相对路径，避免跨会话重复处理
 - **视觉分析指引** — 二分查找式帧采样策略；兼容 agent 运行时提供的任何视觉模型
 - **迭代式剪辑规划** — Markdown 表格输出（时间码、片段描述、操作建议、转场方式、备注），支持追问细化
 - **Agent 无关** — 不包含任何平台特定工具名；兼容任何 agent 框架（Hermes、Claude Code、Codex 等）
@@ -81,20 +81,20 @@ video-edit-planner/
 │   ├── frames/
 │   │   └── extract_frames.py         # 片段提取 + 抽帧（ffmpeg 封装）
 │   └── index/
-│       └── manage_index.py           # SQLite 索引管理（8 个子命令）
+│       └── manage_index.py           # JSON 索引管理（8 个子命令）
 └── references/
     └── frame-extraction-guide.md     # 视觉模型 token 成本、分辨率/批次指引
 ```
 
-## 索引数据库
+## 索引文件
 
-所有处理产物记录在 SQLite 数据库（`<视频文件名>.vedit.db`）中，存放在视频文件同目录：
+所有处理产物记录在 JSON 文件（`<视频文件名>.vedit.json`）中，存放在视频文件同目录：
 
-- **transcription** — JSON 路径、音轨索引、时长
+- **transcriptions** — JSON 路径、音轨索引、时长
 - **clips** — 起止时间、文件路径、提取原因
 - **frames** — 时间戳、文件路径、场景分数、提取方法
 
-这避免了跨会话对同一视频重复转录或重复抽帧。
+所有路径存储为**相对路径**（相对于视频目录），移动整个目录不会破坏引用。JSON 文件可读性强，可用任意文本编辑器直接编辑。
 
 ## 许可证
 

SKILL.md

@@ -102,47 +102,55 @@ uv run --directory SKILL_DIR/scripts/transcription funasr-nano VIDEO_PATH --list
 
 ### Step 5 — Manage index file
 
-An SQLite database tracks all processing artifacts to avoid duplicate work. It lives **next to the video file**.
+A JSON file tracks all processing artifacts to avoid duplicate work. It lives **next to the video file** and is human-readable and editable.
 
 ```
-<video_dir>/<video_stem>.vedit.db
+<video_dir>/<video_stem>.vedit.json
 ```
 
-Schema (managed by `scripts/index/manage_index.py`):
+**All file paths are stored as relative paths** (relative to the video directory). Moving the entire directory does not break any references. If files are split across directories, paths outside the video directory are stored as absolute paths — the user can edit the JSON directly with a text editor to fix them.
 
-```sql
-CREATE TABLE IF NOT EXISTS transcription (
-    id INTEGER PRIMARY KEY AUTOINCREMENT,
-    json_path TEXT NOT NULL,
-    track_index INTEGER NOT NULL,
-    created_at REAL NOT NULL,    -- Unix timestamp
-    duration_s REAL
-);
+Structure (managed by `scripts/index/manage_index.py`):
 
-CREATE TABLE IF NOT EXISTS clips (
-    id INTEGER PRIMARY KEY AUTOINCREMENT,
-    start_time REAL NOT NULL,    -- seconds from video start
-    end_time REAL NOT NULL,
-    path TEXT NOT NULL,
-    created_at REAL NOT NULL,    -- Unix timestamp
-    reason TEXT                  -- why this clip was extracted
-);
-
-CREATE TABLE IF NOT EXISTS frames (
-    id INTEGER PRIMARY KEY AUTOINCREMENT,
-    clip_id INTEGER NOT NULL REFERENCES clips(id),
-    timestamp REAL NOT NULL,     -- seconds from video start
-    path TEXT NOT NULL,
-    scene_score REAL,            -- ffmpeg scene score if available
-    method TEXT NOT NULL,        -- 'scene' | 'sample' | 'both'
-    created_at REAL NOT NULL     -- Unix timestamp
-);
+```json
+{
+  "transcriptions": [
+    {
+      "id": 1,
+      "json_path": "video_track1_fun-asr-nano.json",
+      "track_index": 1,
+      "created_at": 1783997794.78,
+      "duration_s": 120.5
+    }
+  ],
+  "clips": [
+    {
+      "id": 1,
+      "start_time": 30.0,
+      "end_time": 60.0,
+      "path": "video_clips/clip_30-60.mkv",
+      "created_at": 1783997794.85,
+      "reason": "user asked about this segment"
+    }
+  ],
+  "frames": [
+    {
+      "id": 1,
+      "clip_id": 1,
+      "timestamp": 32.0,
+      "path": "video_frames/frame_0001.jpg",
+      "scene_score": 0.45,
+      "method": "scene",
+      "created_at": 1783997795.0
+    }
+  ]
+}
 ```
 
 Use `scripts/index/manage_index.py` for all CRUD operations:
 
 ```bash
-# Initialize database (idempotent)
+# Initialize index file (idempotent)
 uv run --directory SKILL_DIR python scripts/index/manage_index.py init --video VIDEO_PATH
 
 # Add transcription record
@@ -165,6 +173,9 @@ uv run --directory SKILL_DIR python scripts/index/manage_index.py list
 
 # Check if a time range has already been extracted
 uv run --directory SKILL_DIR python scripts/index/manage_index.py check-range --start S --end E
+
+# Remove records for files that no longer exist on disk
+uv run --directory SKILL_DIR python scripts/index/manage_index.py clean
 ```
 
 **Completion criteria:** index file exists and all produced artifacts are recorded in it.
@@ -349,7 +360,7 @@ Check only the items relevant to the steps actually executed. Not all items appl
 - [ ] Video path and audio track index(es) confirmed. *(Step 2 — required when video processing is needed)*
 - [ ] User's editing goal understood. *(Step 3 — skip if not relevant to the user's request)*
 - [ ] Transcription completed for all requested tracks, or reused from cache. *(Step 4)*
-- [ ] Index file initialized at `<video_dir>/<video_stem>.vedit.db`. *(Step 5 — always required when any processing is done)*
+- [ ] Index file initialized at `<video_dir>/<video_stem>.vedit.json`. *(Step 5 — always required when any processing is done)*
 - [ ] All extracted clips and frames recorded in the index. *(Step 6 — only if frames were extracted)*
 - [ ] Vision analysis performed where needed. *(Step 7 — only if frames were extracted)*
 - [ ] Edit plan produced as Markdown table with overall recommendation. *(Step 8 — skip if not relevant to the user's request)*

scripts/index/manage_index.py

@@ -1,8 +1,10 @@
 #!/usr/bin/env python3
-"""Manage the video-edit-planner SQLite index.
+"""Manage the video-edit-planner JSON index.
 
-The index file lives next to the video as <video_stem>.vedit.db.
+The index file lives next to the video as <video_stem>.vedit.json.
 It tracks transcriptions, clips, and frames to avoid duplicate processing.
+All file paths are stored as relative paths (relative to the video directory)
+so that moving the entire directory does not break references.
 
 Usage:
     python manage_index.py init --video VIDEO_PATH
@@ -12,117 +14,121 @@ Usage:
     python manage_index.py add-frames --clip-id N --frames-dir DIR --method scene
     python manage_index.py list
     python manage_index.py check-range --start S --end E
+    python manage_index.py clean
 """
 
 from __future__ import annotations
 
 import argparse
 import json
-import sqlite3
 import sys
 import time
 from pathlib import Path
-
-SCHEMA = """
-CREATE TABLE IF NOT EXISTS transcription (
-    id INTEGER PRIMARY KEY AUTOINCREMENT,
-    json_path TEXT NOT NULL,
-    track_index INTEGER NOT NULL,
-    created_at REAL NOT NULL,
-    duration_s REAL
-);
-
-CREATE TABLE IF NOT EXISTS clips (
-    id INTEGER PRIMARY KEY AUTOINCREMENT,
-    start_time REAL NOT NULL,
-    end_time REAL NOT NULL,
-    path TEXT NOT NULL,
-    created_at REAL NOT NULL,
-    reason TEXT
-);
-
-CREATE TABLE IF NOT EXISTS frames (
-    id INTEGER PRIMARY KEY AUTOINCREMENT,
-    clip_id INTEGER NOT NULL REFERENCES clips(id),
-    timestamp REAL NOT NULL,
-    path TEXT NOT NULL,
-    scene_score REAL,
-    method TEXT NOT NULL,
-    created_at REAL NOT NULL
-);
-
-CREATE INDEX IF NOT EXISTS idx_frames_clip_id ON frames(clip_id);
-CREATE INDEX IF NOT EXISTS idx_clips_time ON clips(start_time, end_time);
-"""
+from typing import Any
 
 
-def db_path_for_video(video_path: Path) -> Path:
-    """Return the index database path for a given video file."""
-    return video_path.parent / f"{video_path.stem}.vedit.db"
+def index_path_for_video(video_path: Path) -> Path:
+    """Return the index file path for a given video file."""
+    return video_path.parent / f"{video_path.stem}.vedit.json"
 
 
-def connect(video_path: Path) -> sqlite3.Connection:
-    db = db_path_for_video(video_path)
-    if not db.exists():
-        sys.exit(f"Index not found: {db}. Run 'init' first.")
-    conn = sqlite3.connect(str(db))
-    conn.row_factory = sqlite3.Row
-    conn.execute("PRAGMA foreign_keys = ON")
-    return conn
+def to_rel(path: str | Path, video_dir: Path) -> str:
+    """Convert an absolute path to a path relative to the video directory."""
+    p = Path(path).expanduser().resolve()
+    try:
+        return str(p.relative_to(video_dir))
+    except ValueError:
+        # Path is outside the video directory; store as absolute
+        return str(p)
+
+
+def to_abs(rel_path: str, video_dir: Path) -> Path:
+    """Resolve a stored path (relative or absolute) to an absolute path."""
+    p = Path(rel_path)
+    if p.is_absolute():
+        return p
+    return (video_dir / p).resolve()
+
+
+def load_index(video_path: Path) -> dict[str, Any]:
+    """Load the index file. Returns the full index dict."""
+    idx_path = index_path_for_video(video_path)
+    if not idx_path.exists():
+        sys.exit(f"Index not found: {idx_path}. Run 'init' first.")
+    return json.loads(idx_path.read_text(encoding="utf-8"))
+
+
+def save_index(video_path: Path, data: dict[str, Any]) -> None:
+    """Write the index file."""
+    idx_path = index_path_for_video(video_path)
+    idx_path.write_text(
+        json.dumps(data, ensure_ascii=False, indent=2),
+        encoding="utf-8",
+    )
+
+
+def next_id(items: list[dict[str, Any]]) -> int:
+    """Get the next ID for a list of records."""
+    if not items:
+        return 1
+    return max(r["id"] for r in items) + 1
 
 
 def cmd_init(args: argparse.Namespace) -> None:
     video = Path(args.video).expanduser().resolve()
-    db = db_path_for_video(video)
-    conn = sqlite3.connect(str(db))
-    conn.executescript(SCHEMA)
-    conn.close()
-    print(json.dumps({"status": "ok", "db_path": str(db)}))
+    idx_path = index_path_for_video(video)
+    if idx_path.exists():
+        print(json.dumps({"status": "ok", "index_path": str(idx_path), "message": "already exists"}))
+        return
+    data = {"transcriptions": [], "clips": [], "frames": []}
+    save_index(video, data)
+    print(json.dumps({"status": "ok", "index_path": str(idx_path)}))
 
 
 def cmd_add_transcription(args: argparse.Namespace) -> None:
     video = Path(args.video).expanduser().resolve()
-    conn = connect(video)
-    conn.execute(
-        "INSERT INTO transcription (json_path, track_index, created_at, duration_s) VALUES (?, ?, ?, ?)",
-        (args.json_path, args.track_index, time.time(), args.duration),
-    )
-    conn.commit()
-    cur = conn.execute("SELECT last_insert_rowid()")
-    row_id = cur.fetchone()[0]
-    conn.close()
-    print(json.dumps({"status": "ok", "id": row_id}))
+    data = load_index(video)
+    new_id = next_id(data["transcriptions"])
+    record = {
+        "id": new_id,
+        "json_path": to_rel(args.json_path, video.parent),
+        "track_index": args.track_index,
+        "created_at": time.time(),
+        "duration_s": args.duration,
+    }
+    data["transcriptions"].append(record)
+    save_index(video, data)
+    print(json.dumps({"status": "ok", "id": new_id}))
 
 
 def cmd_get_transcription(args: argparse.Namespace) -> None:
     video = Path(args.video).expanduser().resolve()
-    conn = connect(video)
+    data = load_index(video)
+    records = data["transcriptions"]
     if args.track is not None:
-        rows = conn.execute(
-            "SELECT * FROM transcription WHERE track_index = ? ORDER BY created_at DESC",
-            (args.track,),
-        ).fetchall()
-    else:
-        rows = conn.execute("SELECT * FROM transcription ORDER BY created_at DESC").fetchall()
-    conn.close()
-    if not rows:
+        records = [r for r in records if r["track_index"] == args.track]
+    records.sort(key=lambda r: r["created_at"], reverse=True)
+    if not records:
         print(json.dumps({"found": False}))
         return
-    result = [dict(r) for r in rows]
-    print(json.dumps({"found": True, "records": result}, ensure_ascii=False))
+    print(json.dumps({"found": True, "records": records}, ensure_ascii=False))
 
 
 def cmd_add_clip(args: argparse.Namespace) -> None:
     video = Path(args.video).expanduser().resolve()
-    conn = connect(video)
-    cur = conn.execute(
-        "INSERT INTO clips (start_time, end_time, path, created_at, reason) VALUES (?, ?, ?, ?, ?)",
-        (args.start, args.end, args.path, time.time(), args.reason),
-    )
-    conn.commit()
-    clip_id = cur.lastrowid
-    conn.close()
-    print(json.dumps({"status": "ok", "clip_id": clip_id}))
+    data = load_index(video)
+    new_id = next_id(data["clips"])
+    record = {
+        "id": new_id,
+        "start_time": args.start,
+        "end_time": args.end,
+        "path": to_rel(args.path, video.parent),
+        "created_at": time.time(),
+        "reason": args.reason,
+    }
+    data["clips"].append(record)
+    save_index(video, data)
+    print(json.dumps({"status": "ok", "clip_id": new_id}))
 
 
 def cmd_add_frames(args: argparse.Namespace) -> None:
@@ -132,14 +138,13 @@ def cmd_add_frames(args: argparse.Namespace) -> None:
     if not frames_dir.is_dir():
         sys.exit(f"Frames directory not found: {frames_dir}")
 
-    conn = connect(video)
+    data = load_index(video)
 
     # Read scene scores from showinfo log if available
     scene_scores: dict[str, float] = {}
     log_file = frames_dir / "showinfo.log"
     if log_file.exists():
         for line in log_file.read_text(errors="replace").splitlines():
-            # Parse lavfi.scd.score and lavfi.scd.time from showinfo output
             score = None
             t = None
             for part in line.split():
@@ -150,110 +155,118 @@ def cmd_add_frames(args: argparse.Namespace) -> None:
             if score is not None and t is not None:
                 scene_scores[f"{t:.3f}"] = score
 
-    # Parse timestamps from filenames: frame_XXXX.jpg
-    # The agent should pass --fps and --start to compute timestamps
     fps = args.fps if args.fps else 0.5
     start_offset = args.start if args.start else 0.0
 
     frame_files = sorted(frames_dir.glob("frame_*.jpg"))
     if not frame_files:
-        # Try other extensions
         frame_files = sorted(frames_dir.glob("frame_*.png"))
 
     if not frame_files:
         sys.exit(f"No frame files found in {frames_dir}")
 
+    new_id = next_id(data["frames"])
     count = 0
     for i, frame_path in enumerate(frame_files):
-        # Estimate timestamp: frame number * (1/fps) + start_offset
-        # This is approximate; the agent can refine with --timestamps
         timestamp = start_offset + (i / fps)
-
-        # Try to match with scene score
         scene_score = scene_scores.get(f"{timestamp:.3f}")
 
-        conn.execute(
-            "INSERT INTO frames (clip_id, timestamp, path, scene_score, method, created_at) VALUES (?, ?, ?, ?, ?, ?)",
-            (args.clip_id, timestamp, str(frame_path), scene_score, args.method, time.time()),
-        )
+        record = {
+            "id": new_id + count,
+            "clip_id": args.clip_id,
+            "timestamp": timestamp,
+            "path": to_rel(frame_path, video.parent),
+            "scene_score": scene_score,
+            "method": args.method,
+            "created_at": time.time(),
+        }
+        data["frames"].append(record)
         count += 1
 
-    conn.commit()
-    conn.close()
+    save_index(video, data)
     print(json.dumps({"status": "ok", "frames_added": count}))
 
 
 def cmd_list(args: argparse.Namespace) -> None:
     video = Path(args.video).expanduser().resolve()
-    conn = connect(video)
+    data = load_index(video)
 
-    transcriptions = conn.execute("SELECT * FROM transcription ORDER BY created_at DESC").fetchall()
-    clips = conn.execute("SELECT * FROM clips ORDER BY start_time").fetchall()
-
-    result = {"transcriptions": [dict(r) for r in transcriptions], "clips": []}
+    result = {
+        "transcriptions": sorted(data["transcriptions"], key=lambda r: r["created_at"], reverse=True),
+        "clips": [],
+    }
+    clips = sorted(data["clips"], key=lambda r: r["start_time"])
     for clip in clips:
         clip_dict = dict(clip)
-        frames = conn.execute(
-            "SELECT * FROM frames WHERE clip_id = ? ORDER BY timestamp", (clip["id"],)
-        ).fetchall()
-        clip_dict["frames"] = [dict(f) for f in frames]
+        frames = [f for f in data["frames"] if f["clip_id"] == clip["id"]]
+        frames.sort(key=lambda f: f["timestamp"])
+        clip_dict["frames"] = frames
         result["clips"].append(clip_dict)
 
-    conn.close()
     print(json.dumps(result, ensure_ascii=False, indent=2))
 
 
 def cmd_check_range(args: argparse.Namespace) -> None:
     """Check if a time range overlaps with any existing clips."""
     video = Path(args.video).expanduser().resolve()
-    conn = connect(video)
+    data = load_index(video)
     # Find clips that overlap with the requested range
-    rows = conn.execute(
-        """SELECT * FROM clips
-           WHERE start_time < ? AND end_time > ?
-           ORDER BY start_time""",
-        (args.end, args.start),
-    ).fetchall()
-    conn.close()
-    if not rows:
+    overlapping = [
+        c for c in data["clips"]
+        if c["start_time"] < args.end and c["end_time"] > args.start
+    ]
+    overlapping.sort(key=lambda c: c["start_time"])
+    if not overlapping:
         print(json.dumps({"found": False}))
     else:
-        print(json.dumps({"found": True, "clips": [dict(r) for r in rows]}, ensure_ascii=False))
+        print(json.dumps({"found": True, "clips": overlapping}, ensure_ascii=False))
 
 
 def cmd_clean(args: argparse.Namespace) -> None:
     """Remove frame and clip records for files that no longer exist on disk."""
     video = Path(args.video).expanduser().resolve()
-    conn = connect(video)
+    data = load_index(video)
+    video_dir = video.parent
 
     # Check frames
-    frame_rows = conn.execute("SELECT id, path FROM frames").fetchall()
     frames_removed = 0
-    for row in frame_rows:
-        if not Path(row["path"]).exists():
-            conn.execute("DELETE FROM frames WHERE id = ?", (row["id"],))
+    remaining_frames = []
+    for f in data["frames"]:
+        if to_abs(f["path"], video_dir).exists():
+            remaining_frames.append(f)
+        else:
             frames_removed += 1
+    data["frames"] = remaining_frames
 
     # Check clips
-    clip_rows = conn.execute("SELECT id, path FROM clips").fetchall()
     clips_removed = 0
-    for row in clip_rows:
-        if not Path(row["path"]).exists():
-            conn.execute("DELETE FROM frames WHERE clip_id = ?", (row["id"],))
-            conn.execute("DELETE FROM clips WHERE id = ?", (row["id"],))
+    remaining_clip_ids = set()
+    remaining_clips = []
+    for c in data["clips"]:
+        if to_abs(c["path"], video_dir).exists():
+            remaining_clips.append(c)
+            remaining_clip_ids.add(c["id"])
+        else:
             clips_removed += 1
+    data["clips"] = remaining_clips
 
-    conn.commit()
-    conn.close()
-    print(json.dumps({"status": "ok", "frames_removed": frames_removed, "clips_removed": clips_removed}))
+    # Remove frames whose clip was removed
+    data["frames"] = [f for f in data["frames"] if f["clip_id"] in remaining_clip_ids]
+
+    save_index(video, data)
+    print(json.dumps({
+        "status": "ok",
+        "frames_removed": frames_removed,
+        "clips_removed": clips_removed,
+    }))
 
 
 def main() -> None:
-    parser = argparse.ArgumentParser(description="Manage video-edit-planner index database.")
+    parser = argparse.ArgumentParser(description="Manage video-edit-planner index file.")
     sub = parser.add_subparsers(dest="command", required=True)
 
     # init
-    p_init = sub.add_parser("init", help="Initialize index database")
+    p_init = sub.add_parser("init", help="Initialize index file")
     p_init.add_argument("--video", required=True, help="Path to the video file")
 
     # add-transcription