I have 15 video clips, all taken with same camera and in same shooting orientation (landscape) and all show as 16:9 aspect ratio except one and it shows 9:16 under Properties in Bin or Preview. In Sequence it appears rotated 90 degrees, but can be corrected by rotation in Preview. However, even though the project is saved after this action, it will appear as 9:16 when project is again opened and again displays 90 degrees rotated.
There is no way to correct this externally that I can find. Not sure if the completed project will be correct if I do the rotate in bin when ready to finish. Why would this happen and what is the correction? Note that this one clip appears and displays correctly in Windows Media Player before adding to project.