Topic: Playing MP4 files on PS4, need help

My son has a PS4. He tells me he can play an MP4 file on his PS from a flash drive onto a TV. We got as far as having the flash drive formatted to FAT32. After that we're lost. Tried searching on-line, and confused.
One web site says to create a "PS4" file on the flash drive and then create another file inside this one. ???
Another web site says to convert the MP4 file into something else so it can be played on the PS4.
The MP4 file is approx. 560,000Kb large.
Can anyone please explain, in simple words, how to get a MP4 file working on the PS4?

Thanks for any help.

@MarMaduke Should find this helps:
https://www.playstation.com/en-gb/support/hardware/play-video...

I'd suggest, after formatting the stick in exFAT, you create a folder called "VIDEO" and put your MP4 files in there. It's worth noting that some MP4 files will only play on the Pro (4K video).

PS4 console supported file formats

MKV
Video: H.264/MPEG-4 AVC High Profile Level 4.2
Audio: MP3, AAC LC, AC-3 (Dolby Digital)
AVI
Video: MPEG4 ASP, H.264/MPEG-4 AVC High Profile Level 4.2
Audio: MP3, AAC LC, AC-3 (Dolby Digital)
MP4
Video: H.264/MPEG-4 AVC High Profile Level 4.2, H.264/MPEG-4 AVC High Profile Level 5.2 (PlayStation®4 Pro only)
Audio: AAC LC, AC-3 (Dolby Digital), LPCM
MPEG-2 PS
Video: MPEG2 Visual
Audio: MP2 (MPEG2 Audio Layer 2), MP3, AAC LC, AC-3 (Dolby Digital), LPCM
MPEG-2 TS
Video: H.264/MPEG-4 AVC High Profile Level 4.2, MPEG2 Visual
Audio: MP2 (MPEG2 Audio Layer 2), AAC LC, AC-3 (Dolby Digital)
AVCHD (.m2ts, .mts)
XAVC S™ (.mp4)

Thanks. I'll try it out this Weekend.