Ya it doesn't really make alot of sense. Honestly I haven't tried playing a video via flash drive in years. I'm doubtful that your going to get an answer given the information you've provided.
I think you are opting for "Video Files" and customised video formats. It will be quite confusing to select the settings.
Choose "TV Devices" and any of the TV models. In the basic settings, choose video size 1280 x 720. (They are by default 1980 x 1080, which your projector may not handle). Do not change any other setting.
The encoded video should be acceptable in your projector,
Try a program called MKVToolNix GUI; all it does is repackage files into the mkv container. It doesn't re-encode files, so conversion is very quick, and file sizes barely change at all. I also use it to strip or re-order audio or subtitle tracks, and sometimes to change the aspect ratio (though not all players support that).
It's not the most user-friendly program (though the GUI makes it easier to use than the command-line version). https://mkvtoolnix.download/downloads.html
The great VLC player can do an excellent job of conversion. Or just change the "container", which is referred to as "encapsulation".
Or the well known Handbrake.
Does the manual of the JimTab tell ypu what format the USB drive uses?
It can be other formats than the mentioned NTFS or exFAT.
The wiki shows many: Disk file systems[edit]
A disk file system takes advantages of the ability of disk storage media to randomly address data in a short amount of time. Additional considerations include the speed of accessing data following that initially requested and the anticipation that the following data may also be requested. This permits multiple users (or processes) access to various data on the disk without regard to the sequential location of the data. Examples include FAT (FAT12, FAT16, FAT32), exFAT, NTFS, HFS and HFS+, HPFS, APFS, UFS, ext2, ext3, ext4, XFS, btrfs, Files-11, Veritas File System, VMFS, ZFS, ReiserFS and ScoutFS. Some disk file systems are journaling file systems or versioning file systems.
I could not Copy the MediaInfo of the Videos to Upload.
But I Converted just 30 Movies to MP4. H264 at 720 X 480 Display Size.
I Set the Audio to Stereo.
And I Left the Frame Rate to Auto and Set the Video Bit Rate to 5,000 kbps.
Some Play and some do not.
I did just 30 Movies because I Thought maybe I was putting to many on the Micro SD Card.
But if I make the Video Bit Rate 512 kbps they all Play.
So You would Say this sounds like the Projector can not Read a High Bit Rate from the Micro SD Card.
But JimTab Tells Me the Projector should not be able to Play anything at 512 kbps it is to Low.