The video is about real-world star catalogue names. The OP's question is specifically about the "boxels" and "mass codes" assigned to non-real-world stars. You need to read this thread by Jackie Silver, which is I think still the definitive answer:
Following a lead from CMDR shadmar, I spent some time surveying the sector OUTORST in my Clipper, the RV Sonnenkreis. Updated! As per this post, we now have the tools to resolve the position of any sector and approximate position of systems within the sector. Kudos to CMDR Alot (Esvandiary)...
forums.frontier.co.uk
But a quick summary, in the context of the OP's example picture. "Preia Phoe" is the procedurally-generated sector name. These names are generated by combining four "syllables", two vowels and two consonants (in this case, the "vowels" are EIA and OE and the consonants are PR and PH), in a pattern that creates almost-sensible, almost-pronounceable names. Sectors are giant cubes, 1280 LY across.
The next important part of the name is the mass-code letter; this is the last letter, just before the string of numbers eg. Preia Phoe CZ-C
c14-89. The mass-code tells you which set of boxels within the sector the star was created within. In this case, it's mass code c, which are cubes 40 LY across, 32768 of which are within the Preia Phoe sector. The three-letter combination plus the number immediately following the mass code letter tells you exactly which code-c boxel within the sector it is. Finally, the number says which star within that boxel it is. Thus, the system I've used as an example is the 89th star within the CZ-C 14 boxel of the mass code c boxel group, in the Preia Phoe sector.
Simples.
Stars are generated randomly* within a boxel, so they aren't in a logical "order", apart from the general arrangement of the boxels. You'll notice, for example, that there are two stars near the centre of the screen, "Preia Phoe JE-E b29-0" and "Preia Phoe JE-E b29-1", close to each other; those are two stars that have been generated randomly* within the same mass-code-b boxel. The Stellar Forge simply goes "Do I have enough protomatter to create a star here in this boxel? Yes? Then create a star at random co-ordinates within the boxel and subtract the star's mass from the pool of available protomatter". Repeat until it runs out of protomatter.
* - yes, I know it's "procedural generation" rather than true statistical "randomness". As far as the player experience of the ED galaxy is concerned, they can be regarded as functionally identical.
