
m2ts files on a Blu-ray as part of the DRM. One benefit of putting the Blu-ray video into an MKV file is that you only have one file - the video can be split into many.

the original lossless 1080p video would take up several hundred GB.


And when Thundersoft calls it lossless MKV, they mean that the Blu-ray content is not reencoded - not that the MKV itself is lossless, because the content on the Blu-ray itself is not lossless. That way you don't need a specialized player that understands the Blu-ray folder structure & files. ThunderSoft Blu-ray Ripper is more along the lines of the MakeMKV app, copying the contents on a Blu-ray disc, but instead of storing those files in the same folder structure as on the Blu-ray disc, puts them in an MKV container. The Rippers we've seen on GOTD all reencode the video on a DVD, or more rarely a Blu-ray disc, while the copy apps do just that, copy the files to a hard drive after dealing with DRM.
