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1. how does this bypass the DRM? That's suspiciously missing from the guide, considering other parts clearly suggests this will be used to rip commercial blu-rays

2. Why go through this trouble when you can get bit perfect copies (ie. remux) from the internet?

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That is handled by MakeMKV, which the blog posts refers to.

https://www.makemkv.com/

"MakeMKV is a format converter, otherwise called "transcoder". It converts the video clips from proprietary (and usually encrypted) disc into a set of MKV files, preserving most information but not changing it in any way."

Is makemkv doing anything different comparing to libdvdcss2 ?

It says on the about page that makeMKV is open but I couldn't find a link to a source.

MakeMKV can decrypt most of Blu-rays. libdvdcss2 IIRC is DVD only.

> how does this bypass the DRM? That's suspiciously missing from the guide, considering other parts clearly suggests this will be used to rip commercial blu-rays

The very first item in the list that's inside the first paragraph clearly mentioned the transcoder used.

Transcoding is a separate process from DRM removal

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