chore: update README.md

README.en.md

@@ -40,6 +40,7 @@ You can find historical versions and changelogs on the [Release](https://github.
 - **Manual Matching Editor**: Customizable rules with simple wildcards.
 - **Regex Editor**: Includes a regex matching test tool.
 - **Match Fine-tuning**: Allows fine-tuning of matching results.
+- **Auto Subtitle Sync**: Supports automatic alignment of subtitle timelines with video/audio (integrates [FFsubsync](https://github.com/qwqcode/ffsubsync-bin) + [FFmpeg](https://www.ffmpeg.org/))
 - **Rename Commands**: Quickly copy Linux rename commands to clipboard via right-click.
 - **Subtitle Backup**: Automatically backs up subtitle files before renaming.
 - **Append Suffix**: Supports adding custom suffixes before file extensions.
@@ -100,6 +101,22 @@ To perform automatic matching, you need to import at least two video files and t
 
 The automatic matching mode may fail with complex filename formats, in which case you can switch to manual matching mode. Manual mode allows you to define rules (supporting simple wildcards and regular expressions). The program provides a simple editor for quickly writing matching rules.
 
+## Auto Sync Subtitles
+
+SubRenamer supports automatic subtitle timeline adjustment based on [FFsubsync](https://github.com/qwqcode/ffsubsync-bin) + FFmpeg (automatically aligning subtitle timelines with video/audio).
+
+You need to download the FFsubsync program separately. You can automatically install it by clicking the download button in the settings interface:
+
+<img width="420" alt="image" src="https://github.com/user-attachments/assets/d0184502-4bc8-4c0f-bcc6-431be02612ed">
+
+The sync can be executed right after renaming. Simply check the “Sync” option and click “Rename All” to execute.
+
+You can also import video and subtitle files, then right-click on the list to select “Execute Subtitle Auto Sync Program” to perform the sync alone, without renaming.
+
+<img width="300" alt="image" src="https://github.com/user-attachments/assets/6e26540b-ff5f-44a4-aefd-d76d8f6df21f">
+
+If you encounter network issues and are unable to download, you can try [manual download](https://github.com/qwqcode/ffsubsync-bin) and rename the downloaded file to `ffsubsync_bin.exe`, then place it in the same directory as the `SubRenamer.exe` program.
+
 ## FAQ
 
 **macOS can't open, says it's damaged**

README.md

@@ -51,6 +51,7 @@ SubRenamer 专注于字幕文件改名，简单易用。
 - **手动匹配编辑器**：自定义规则，支持简单通配符
 - **正则表达式编辑器**：包含正则表达式匹配测试工具
 - **匹配微调**：支持对匹配结果进行微调
+- **自动调轴**：支持字幕时间轴和视频音频自动对齐（集成 [FFsubsync](https://github.com/qwqcode/ffsubsync-bin) + [FFmpeg](https://www.ffmpeg.org/)）
 - **改名命令**：右键快速复制 Linux 改名命令到剪贴板
 - **字幕备份**：改名前自动备份字幕文件
 - **追加后缀**：支持在文件扩展名前添加自定义后缀
@@ -110,6 +111,24 @@ SubRenamer 专注于字幕文件改名，简单易用。
 
 自动匹配模式可能在复杂的文件名格式下失效，此时可切换至手动匹配模式，手动模式允许你自定义规则（支持简单通配符和正则表达式）。程序提供一个简单的编辑器，以便你可以快速地编写匹配规则。
 
+## 自动调轴
+
+SubRenamer 支持基于 [FFsubsync](https://github.com/qwqcode/ffsubsync-bin) + FFmpeg 的字幕时间轴自动调整功能（自动对齐字幕时间轴和视频音频）。
+
+你需要额外下载 FFsubsync 程序，可在设置界面点击下载按钮自动安装：
+
+<img width="420" alt="image" src="https://github.com/user-attachments/assets/d0184502-4bc8-4c0f-bcc6-431be02612ed">
+
+调轴可以在改名后随即执行，勾选“调轴”选项，然后点击“一键改名”即可。
+
+你也可以导入视频和字幕文件后，在列表中右键点击“执行字幕自动调轴程序”，只执行单独的调轴，而不改名。
+
+<img width="300" alt="image" src="https://github.com/user-attachments/assets/6e26540b-ff5f-44a4-aefd-d76d8f6df21f">
+
+如遇网络问题无法下载，可尝试 [手动下载](https://github.com/qwqcode/ffsubsync-bin) 并修改下载的文件名为 `ffsubsync_bin.exe`，然后放到 `SubRenamer.exe` 程序相同目录内。
+
+你也可以通过网盘下载“智能调轴版”压缩包：[蓝奏云](https://wwi.lanzoui.com/s/sub-renamer) (密码: 233)
+
 ## 用户故事
 
 <details>