修改打包方式

tools/screencast/composer.py

@@ -1,80 +1,6 @@
-"""FFmpeg 合成：帧序列 + SRT 字幕 + 背景音乐 → MP4。"""
-from __future__ import annotations
+from ._bootstrap import bootstrap_src
 
-import random
-import subprocess
-import sys
-from pathlib import Path
+bootstrap_src()
+from screencast.composer import compose_video
 
-
-# 匠厂统一字幕样式 —— 所有 skill 录屏共用，做品牌一致性
-# FontSize 14：1080p 屏幕约占 1.3% 高度，演示视频留足画面呼吸感
-# Outline 2：14 号字配 Outline 3 会显胖，2 已足够在浅色背景上保持可读
-# 修改请评估对所有 skill 录屏的影响。
-_JIANGCHANG_SUBTITLE_STYLE = (
-    "FontName=Arial,FontSize=14,"
-    "PrimaryColour=&H00FFFFFF,OutlineColour=&H00000000,"
-    "Outline=2,Shadow=1,Alignment=2"
-)
-
-
-def compose_video(
-    frames_dir: str,
-    fps: int,
-    subtitle_path: str,
-    music_dir: str,
-    output_path: str,
-    music_volume: float = 0.15,
-) -> str:
-    frames_dir = Path(frames_dir)
-    subtitle_path = Path(subtitle_path)
-    output_path = Path(output_path)
-    output_path.parent.mkdir(parents=True, exist_ok=True)
-
-    # 随机选一首背景音乐
-    music_files = list(Path(music_dir).rglob("*.mp3"))
-    if not music_files:
-        raise FileNotFoundError(f"music_dir 下没有找到 MP3 文件: {music_dir}")
-    music_file = random.choice(music_files)
-    print(f"[screencast] 背景音乐: {music_file.name}")
-
-    # FFmpeg 字幕路径在 Windows 下需要转义冒号（subtitles 滤镜内部语法）
-    srt_path_str = str(subtitle_path).replace("\\", "/").replace(":", "\\:")
-
-    subtitle_filter = (
-        f"subtitles='{srt_path_str}'"
-        f":force_style='{_JIANGCHANG_SUBTITLE_STYLE}'"
-    )
-
-    # 视频和音频都放进 filter_complex，避免 -vf 与 -filter_complex 混用报错
-    filter_complex = (
-        f"[0:v]{subtitle_filter}[vout];"
-        f"[1:a]volume={music_volume},apad[aout]"
-    )
-
-    cmd = [
-        "ffmpeg", "-y",
-        "-framerate", str(fps),
-        "-i", str(frames_dir / "frame_%06d.png"),
-        "-i", str(music_file),
-        "-filter_complex", filter_complex,
-        "-map", "[vout]",
-        "-map", "[aout]",
-        "-c:v", "libx264",
-        "-preset", "fast",
-        "-crf", "23",
-        "-c:a", "aac",
-        "-b:a", "128k",
-        "-shortest",
-        "-pix_fmt", "yuv420p",
-        str(output_path),
-    ]
-
-    print(f"[screencast] 运行 FFmpeg 合成...")
-    result = subprocess.run(cmd, capture_output=True, text=True, encoding="utf-8", errors="replace")
-    if result.returncode != 0:
-        print(result.stderr, file=sys.stderr)
-        raise RuntimeError(f"FFmpeg 合成失败，退出码 {result.returncode}")
-
-    print(f"[screencast] 输出: {output_path}")
-    return str(output_path)
+__all__ = ["compose_video"]