libdvdcss version 1.4.2 has been ported (2018/04/01) to OS/2.
This library does DVD decryption without region checking.
Source code at: https://github.com/komh/libdvdcss-os2
If you would like to support KO Myung-Hun you can make a donation at his website.
Port by: KO Myung-Hun
Source: eCSoft/2