Look at the lens and stitching edges.
In addition, you can add options in Optical Flow to adjust the depth of optical flow stitching.
Use the time interval for sequence settings of edit in and out tool, so that the segment exported is corresponding to
the selected time interval.
File->Render, to open the Export Options interface, which can be exported aer rendering, and select settings when
exporting audio files such as no audio, independent audio files, and audio in movie.