feat: 优化学习视频转写与字幕清洗

2026-09-11 14:26:02 +08:00
parent a8fe133aa4
commit eba9163246
12 changed files with 552 additions and 28 deletions
@@ -188,7 +188,9 @@ def invoke(request: InvokeRequest) -> InvokeResponse:
            (
                f"select='not(mod(n\\,{step}))',"
                f"crop={w_px}:{h_px}:{x_px}:{y_px},"
-                "scale=1280:720:force_original_aspect_ratio=decrease:force_divisible_by=2"
+                # force_divisible_by 仅在较新 ffmpeg 中可用；PNG 抽帧不要求偶数尺寸，
+                # 保留等比缩小即可兼容系统版 ffmpeg 4.x。
+                "scale=1280:720:force_original_aspect_ratio=decrease"
            ),
            # 只写出被选中的帧，避免 CFR 补帧产生重复文件。
            "-vsync",