fix: audio filter order (denoise before volume) + clarify reverse path comment

- _render_pass_through: move volume filter after denoise to avoid amplifying noise before denoising - concat_main_audio: add comment explaining speed/reverse go through filter_complex else branch, not simple path
2026-08-24 00:15:24 +08:00
parent 2f76509a5b
commit a628b4ca8e
2 changed files with 8 additions and 6 deletions
@@ -278,7 +278,9 @@ def concat_main_audio(
        has_speed = abs(speed - 1.0) >= 1e-6

        if not has_speed and not has_reverse:
-            # 无调速无倒放：简单命令行，-ss 裁剪更高效
+            # 无调速无倒放：简单命令行，-ss 裁剪更高效。
+            # 注意：有调速或倒放时走下方 else 分支（filter_complex），那里正确处理了
+            # atrim/atempo/reverse/volume/aformat，单 clip 简单路径不需要这些。
            command = [
                FFMPEG_BIN,
                "-y",