How to add parent folder and all sub folder video files to handbrake Windows version?

[freevideo]

Description of problem or question:
How to add parent folder and all sub folder video files to handbrake Windows version?
It will add no videos when my parent folder has no video but sub folder has many videos.



Steps to reproduce the problem (If Applicable):
1. choose parent folder;
2. click add;
3. no video will be added to handbrake;



HandBrake version (e.g., 1.0.0):
version 1.5.1



Operating system and version (e.g., Ubuntu 16.04 LTS, macOS 10.13 High Sierra, Windows 10 Creators Update):
Windows 10 21H2



HandBrake Activity Log ***required*** (see How-to get an activity log)

Code: Select all

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If you are unable to do so, please state why so we can help you.

[rollin_eng]

You cannot add subfolders in the GUI.

[freevideo]

You cannot add subfolders in the GUI.

Can you recommand a tool which can add subfolders' files and transfer video type?