Hi
I recorded two video with my smartphone (oppo find x3 pro) and "Open Camera" app.
First video was recorded as usual (vertically, the cameras at the top and the user interface straight)
Second video was recorder vertical, but the phone upside down (cameras on the bottom, UI upside down).
VLC shows the videos correctly, I believe the second has a flag to indicate that it is flipped and then in playback it is rotated 180 degrees.
Importing it into videopad is correct, the preview is oriented correctly.
If you export (Reencoded) it works ok.
If you export (Lossless) second video is upside down.
My repro source video and my output:
https://drive.google.com/drive/ {link removed}
Thank you in advance,
Matteo