29 October 2021
Digital broadcasting (terrestrial, BS, CS) can be recorded only on CPRM compatible DVDs, but the same data does not remain on multiple recording media, including hard disks.
Also, after recording to a DVD, you cannot digitally copy or move from that DVD to another recording medium.
The mechanism is to protect the copyright holder with the copyright protection technology called CPRM.
(Refer to the contents of CPRM in “How to use DVD”)