Since Xtreamer supports .m2ts, we just need copy Blu-ray to HD directly, and keep its all initial data without any change, including the .m2ts format, so there is no need to worry about if the backup files will get some video loss or something else unexpected.
The Pavtube Blu-Ray Ripper Software is currently the best ripping software and surprisingly it can rip both DVDs & Blu-Ray Discs without the need of having a different Undo-Protection program. I have tried many brands of ripping software with poor results. PavTube Blue-Ray Ripper is a real "Swiss Knife". Additionally, I must report that conversion speed of DVD Ripping is really astonishing but I think ripping a Blu-Ray Disc is fairly slow but quite reasonable. The quality of the output video files is also superb.
Choose "Directly Copy", set destination folder
Click the drop-down list of "Format" to select "Copy" firstly, and then click on "Copy Directly" next to it. Meanwhile, press the folder icon in the opposite side of "Output" to specify save path of output files.
Download the demo version from
Pavtube Blu-ray Ripper - Rip/convert Blu-ray DVD to AVI/MKV/MPG
One thing I liked about the demo version is that it ripped the whole movie, not just the first 2 minutes.