1, adjust the video direction. Use video editing software to import vertical video, and then use the rotation tool to adjust the video direction to landscape. Most video editing software has the function of rotating the video, which can be achieved by selecting an appropriate rotation angle (such as 270 degrees or 90 degrees clockwise).
2. Add a background picture. In the video editing software, a horizontal background picture is imported, and the video is edited to a horizontal screen size matching the background picture.
3. The picture is cut. Use the clipping tools in the video editing software to adjust the aspect ratio of the video to make a video landscape. This can be achieved by selecting an appropriate clipping region.
4. Use online tools. Use online video conversion tools, such as Aconvert or Flexclip. These tools usually provide the function of rotating video, which can convert vertical video into horizontal video.