On Mon, 15 Oct 2018 17:13:40 -0500, VanguardLH wrote:

Dan wrote:

I burnt some home movies to a bd r with cdburnerxp which said all the
files were burnt to disc correctly. But when I test the disc in my and
my fathers blu ray players a message come up saying "unknown disc".

I tested both players with another bd r from the same tub that I burnt
last year. Both player recognise this disc.
So I then split the home movies as to fit on a dvd r.
Same error on both players.
Both players play cdr, dvdr and bdr that I burnt last year and still
both play blu ray movies that I bought.

Did you have the burner program *close* the session? Burners can play
content that hasn't been closed but stand-alone players usually won't.
That is, you need to "finalize" the disc, so the burn session gets
closed.

https://cdburnerxp.se/help/references/burnoptions
Burn Method
DAO or Finalize options

Wolk already mentioned the encoding format. You have to review the
manual for your players to see which they support, and make sure that's
what you burnt onto the disc.

Disc burners and players rely on mechanical alignment. If a disc drive
is sufficiently misaligned, you can play the content using that disc
drive but not with other disc drives.

A dirty lens can emulate misalignment. You might be able to reach
through the front/loading slot with a long-stemmed ear swab (cotton swab
on a long wood stick) with some isopropyl on the cotton swab to clean
the lens. Since you're coming in at a right-angle through the slot to
get at the LED head, you may have to tease the cotton swab to swell it
up to get it to rub against the lens. There are discs with itty bitty
bristle tips embedded it for trying to clean the lens. Those are rather
a hit-and-miss method of cleaning the lens; for example:

https://i.ytimg.com/vi/WVHBRMQieMU/maxresdefault.jpg
https://upload.wikimedia.org/wikiped...ns_Cleaner.jpg


Just used a blu ray player lens cleaner, no difference was sadly made.