How do you fix rotated video in Pitivi?
When I import video clips into my Pitivi project, they all show up in the correct orientation in the "Media Library" thumbnails, but when I drop them into a track, they'll often appear rotated 90 or 180 degrees, and there doesn't seem to any obvious way to change this.
If I view the video outside of Pitivi, say, in Totem or VLC, the video appears in the correct orientation. Why is Pitivi mangling my video clips, and how do I fix it?