1. Download and install a video editing software, such as Adobe Premiere Pro and Final Cut Pro. Or you can use special portrait beautification software, such as FaceApp, BeautyPlus and so on.
2. Open the video editing software or portrait beautification software and import the video file you want to edit.
3. Find the scene or lens to be facelift in the video.
4. In the video editing software, if you find the related options such as "deformation" or "repair", you can generally find tools or special effects for face-lifting. If you use portrait beautification software, it may have special beauty or face-lifting function.
5. Adjust the degree, area and effect of face-lifting according to the operation mode of specific software. You can use related sliders, brushes or other tools for face-lifting treatment.
6. After adjustment, preview whether the effect meets the requirements.
7. If necessary, after face-lifting processing, you can continue to make other edits, such as color adjustment, editing, adding subtitles, etc.
8. Finally, export the edited video file.
Please note that face-lifting is a beautification operation, which can change the appearance of characters, but it needs to be used with caution to avoid excessive beautification and unnatural results. At the same time, the interface and function of different software may be different, please operate according to the specific software you use.