[FFmpeg-user] JPG/PNG images render in incorrect orientation in MP4 output file and can't be combined in same MP4 video

Greetings, FFMpeg Users! I am a new user to FFMpeg. I want a command-line that will create a basic slideshow MP4 video from a folder of JPG and/or PNG images. The images are sourced from either digital cameras/smartphones or scanned photos (typically 600 dpi). I have been partially successful

[FFmpeg-user] Pattern_Type Glob *.JPG wildcard input file support for Windows 10?

I am using WIndows 10 with "ffmpeg version 4.4-full_build-www.gyan.dev Copyright (c) 2000-2021 the FFmpeg developers built with gcc 10.2.0 (Rev6, Built by MSYS2 project)". I am writing a command-line that will create a basic slideshow MP4 video from multiple folders of dozens or hundreds of JPG