2018 copy protection

not defeated by ddrescue which ETA days.

There's an obvious trick in the filesystem, placing content inside the BUP (a BUP is usually ignored by most tools when the IFO is valid)

As seen as UDF fs

total 335024
dr-xr-xr-x. 2 fcartegn fcartegn       1536 13 févr.  2019 .
dr-xr-xr-x. 4 fcartegn fcartegn        136 13 févr.  2019 ..
-r--r--r--. 1 fcartegn fcartegn      16384 13 févr.  2019 VIDEO_TS.BUP
-r--r--r--. 1 fcartegn fcartegn      16384 13 févr.  2019 VIDEO_TS.IFO
-r--r--r--. 1 fcartegn fcartegn     116736 13 févr.  2019 VIDEO_TS.VOB
-r--r--r--. 1 fcartegn fcartegn      20480 13 févr.  2019 VTS_01_0.BUP
-r--r--r--. 1 fcartegn fcartegn      20480 13 févr.  2019 VTS_01_0.IFO
-r--r--r--. 1 fcartegn fcartegn    1607680 13 févr.  2019 VTS_01_0.VOB
-r--r--r--. 1 fcartegn fcartegn    8235008  1 févr.  2019 VTS_01_1.VOB
-r--r--r--. 1 fcartegn fcartegn      18432 13 févr.  2019 VTS_02_0.BUP
-r--r--r--. 1 fcartegn fcartegn      18432 13 févr.  2019 VTS_02_0.IFO
-r--r--r--. 1 fcartegn fcartegn     116736 13 févr.  2019 VTS_02_0.VOB
-r--r--r--. 1 fcartegn fcartegn     124928  1 févr.  2019 VTS_02_1.VOB
-r--r--r--. 1 fcartegn fcartegn      79872 13 févr.  2019 VTS_03_0.BUP
-r--r--r--. 1 fcartegn fcartegn      79872 13 févr.  2019 VTS_03_0.IFO
-r--r--r--. 1 fcartegn fcartegn     116736 13 févr.  2019 VTS_03_0.VOB
-r--r--r--. 1 fcartegn fcartegn      10240  1 févr.  2019 VTS_03_1.VOB
-r--r--r--. 1 fcartegn fcartegn      10240  1 févr.  2019 VTS_03_2.VOB
-r--r--r--. 1 fcartegn fcartegn      18432 13 févr.  2019 VTS_04_0.BUP
-r--r--r--. 1 fcartegn fcartegn      18432 13 févr.  2019 VTS_04_0.IFO
-r--r--r--. 1 fcartegn fcartegn     116736 13 févr.  2019 VTS_04_0.VOB
-r--r--r--. 1 fcartegn fcartegn    8222720  1 févr.  2019 VTS_04_1.VOB
-r--r--r--. 1 fcartegn fcartegn 4200000000 13 févr.  2019 VTS_05_0.BUP
-r--r--r--. 1 fcartegn fcartegn      24576 13 févr.  2019 VTS_05_0.IFO
-r--r--r--. 1 fcartegn fcartegn     116736 13 févr.  2019 VTS_05_0.VOB
-r--r--r--. 1 fcartegn fcartegn  323909632 13 févr.  2019 VTS_05_1.VOB

dvdbackup:

DVD-Video information of the DVD with tile FREE_SOLO

File Structure DVD
VIDEO_TS/
	VIDEO_TS.IFO	16384
	VIDEO_TS.VOB	116736
	VIDEO_TS.BUP	16384
	VTS_01_0.IFO	20480
	VTS_01_0.VOB	1607680
	VTS_01_1.VOB	8235008
	VTS_01_0.BUP	20480
	VTS_02_0.IFO	18432
	VTS_02_0.VOB	116736
	VTS_02_1.VOB	124928
	VTS_02_0.BUP	18432
	VTS_03_0.IFO	79872
	VTS_03_0.VOB	116736
	VTS_03_0.BUP	79872
	VTS_04_0.IFO	18432
	VTS_04_0.VOB	116736
	VTS_04_1.VOB	8222720
	VTS_04_0.BUP	18432
	VTS_05_0.IFO	24576
	VTS_05_0.VOB	116736
	VTS_05_1.VOB	323909632
	VTS_05_0.BUP	978774528


Main feature:
	Title set containing the main feature is  5
	The aspect ratio of the main feature is 16:9
	The main feature has 1 angle(s)
	The main feature has 1 audio_track(s)
	The main feature has 0 subpicture channel(s)
	The main feature has a maximum of 15 chapter(s) in on of its titles
	The main feature has a maximum of 6 audio channel(s) in on of its titles


Title Sets:

	Title set 1
		The aspect ratio of title set 1 is 16:9
		Title set 1 has 1 angle(s)
		Title set 1 has 1 audio_track(s)
		Title set 1 has 0 subpicture channel(s)

		Titles included in title set 1 is/are
			Title 1:
				Title 1 has 1 chapter(s)
				Title 1 has 6 audio channle(s)


	Title set 2
		The aspect ratio of title set 2 is 16:9
		Title set 2 has 1 angle(s)
		Title set 2 has 1 audio_track(s)
		Title set 2 has 0 subpicture channel(s)

		Titles included in title set 2 is/are
			Title 2:
				Title 2 has 1 chapter(s)
				Title 2 has 0 audio channle(s)


	Title set 3
		The aspect ratio of title set 3 is 16:9
		Title set 3 has 0 angle(s)
		Title set 3 has 0 audio_track(s)
		Title set 3 has 1 subpicture channel(s)

		Titles included in title set 3 is/are
			Title 3:
				Title 3 has 15 chapter(s)
				Title 3 has 6 audio channle(s)
			Title 4:
				Title 4 has 10 chapter(s)
				Title 4 has 6 audio channle(s)


	Title set 4
		The aspect ratio of title set 4 is 16:9
		Title set 4 has 1 angle(s)
		Title set 4 has 1 audio_track(s)
		Title set 4 has 0 subpicture channel(s)

		Titles included in title set 4 is/are
			Title 5:
				Title 5 has 1 chapter(s)
				Title 5 has 2 audio channle(s)


	Title set 5
		The aspect ratio of title set 5 is 16:9
		Title set 5 has 1 angle(s)
		Title set 5 has 1 audio_track(s)
		Title set 5 has 0 subpicture channel(s)

		Titles included in title set 5 is/are
			Title 6:
				Title 6 has 2 chapter(s)
				Title 6 has 2 audio channle(s)
			Title 7:
				Title 7 has 2 chapter(s)
				Title 7 has 2 audio channle(s)

custom dvdbackup debug build on the title 3 confirms the content is 978MB after BUP start

After args
After dirs
After Mirror
In DVDMirrorTitleSet

*** libdvdread: CHECK_VALUE failed in src/ifo_read.c:572 ***
*** for vmgi_mat->vmg_last_sector != 0 ***


*** libdvdread: CHECK_VALUE failed in src/ifo_read.c:574 ***
*** for vmgi_mat->vmgi_last_sector * 2 <= vmgi_mat->vmg_last_sector ***


*** libdvdread: CHECK_VALUE failed in src/ifo_read.c:575 ***
*** for vmgi_mat->vmgi_last_sector * 2 <= vmgi_mat->vmg_last_sector ***


*** libdvdread: CHECK_VALUE failed in src/ifo_read.c:586 ***
*** for vmgi_mat->vmgm_vobs == 0 || (vmgi_mat->vmgm_vobs > vmgi_mat->vmgi_last_sector && vmgi_mat->vmgm_vobs < vmgi_mat->vmg_last_sector) ***

libdvdread: data mismatch: info_length (7)!= nr_of_srpts (8). Truncating.

*** libdvdread: CHECK_VALUE failed in src/ifo_read.c:1091 ***
*** for tt_srpt->title[i].nr_of_angles != 0 ***


*** libdvdread: CHECK_VALUE failed in src/ifo_read.c:1091 ***
*** for tt_srpt->title[i].nr_of_angles != 0 ***


*** libdvdread: CHECK_VALUE failed in src/ifo_read.c:1098 ***
*** for tt_srpt->title[i].vts_ttn != 0 ***


*** libdvdread: CHECK_VALUE failed in src/ifo_read.c:1646 ***
*** for info_length % sizeof(cell_adr_t) == 0 ***




File sizes for Title set 0 VIDEO_TS.XXX
IFO = 16384, MENU_VOB = 116736, BUP = 16384
At top of loop
After opening files
After Menu VOB check
After Menu Title VOB check
After Menu Title BUP check



File sizes for Title set 1 i.e.VTS_01_X.XXX
IFO: 20480, MENU: 1607680
VOB 1 is 8235008
BUP: 20480
Bottom of loop 
At top of loop
After opening files
After Menu VOB check
After Menu Title VOB check
After Menu Title BUP check



File sizes for Title set 2 i.e.VTS_02_X.XXX
IFO: 18432, MENU: 116736
VOB 1 is 124928
BUP: 18432
Bottom of loop 
At top of loop
After opening files
After Menu VOB check
After Menu Title VOB check
After Menu Title BUP check



File sizes for Title set 3 i.e.VTS_03_X.XXX
IFO: 79872, MENU: 116736
BUP: 79872
Bottom of loop 
At top of loop
After opening files
After Menu VOB check
After Menu Title VOB check
After Menu Title BUP check



File sizes for Title set 4 i.e.VTS_04_X.XXX
IFO: 18432, MENU: 116736
VOB 1 is 8222720
BUP: 18432
Bottom of loop 
At top of loop
After opening files
After Menu VOB check
After Menu Title VOB check
BUP and IFO size for fileset 5 is not the same be warened!
After Menu Title BUP check



File sizes for Title set 5 i.e.VTS_05_X.XXX
IFO: 24576, MENU: 116736
VOB 1 is 323909632
BUP: 978774528
Bottom of loop