How to convert my original video to match FPS used during annotation ?

Hello I have an issue related to these two :
- https://github.com/heartexlabs/label-studio/issues/3315
- https://github.com/HumanSignal/label-studio/issues/7757

My problem is that I have annotated videos that have an original FPS of 29.997.
But videos were annotated (by mistake) with a FPS of 25 on my browser (label studio default parameter).

With an FPS of 25 The videos are perfectly annotated.

How can I convert my original videos to have same FPS and number of frames as the browser so annotation can match ?

Or does anyone know how the frame step is computed from the original video to the browser ?

Note : I am fine with videos having a lower FPS and less frames.