MP4 video plays rotated sideways, instead of upright

[Tomislav]

Received a video, played it.

It played rotated 90 deg. CCW. I expected it to play upright.

Workarounds include using VLC or telling mplayer to play it using -vf rotate=1, but that's slower and more cumbersome than just doubleclicking.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: mplayer 2:1.3.0-8+deb10u1build0.20.04.1
ProcVersionSignature: Ubuntu 5.15.0-94.104~20.04.1-generic 5.15.136
Uname: Linux 5.15.0-94-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu27.27
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Thu Jun 6 19:45:14 2024
InstallationDate: Installed on 2022-11-03 (581 days ago)
InstallationMedia: Ubuntu 20.04.5 LTS "Focal Fossa" - Release amd64 (20220831)
SourcePackage: mplayer
UpgradeStatus: No upgrade log present (probably fresh install)