playing DVDs does not work

[emdete]

Qubes OS version (e.g., R3.2):

3.2

Affected TemplateVMs (e.g., fedora-23, if applicable):

---

Expected behavior:

vlc, mplayer or mpv can play DVDs

Actual behavior:

the player fails with error message

libdvdread: Get key for /VIDEO_TS/VIDEO_TS.VOB at 0x00010f60
libdvdread: Error cracking CSS key for /VIDEO_TS/VIDEO_TS.VOB (0x00010f60)

even when libdvdcss is installed properly. same dvd can be played in a pure debian with similar setup (same versions of the libs)

Steps to reproduce the behavior:

use a video-player to play DVDs with css

[andrewdavidwong]

Have you tried in a non-Debian-based VM?

[andrewdavidwong]

Have you tried in a non-Debian-based VM?

[emdete]

haven't tesed as i did not find how to install dvdcss (i am not a fedora expert)...

[emdete]

haven't tesed as i did not find how to install dvdcss (i am not a fedora expert)...

[unman]

On Mon, Mar 06, 2017 at 01:00:29AM -0800, M. Dietrich wrote: #### Qubes OS version (e.g., `R3.2`): 3.2 #### Affected TemplateVMs (e.g., `fedora-23`, if applicable): --- ### Expected behavior: vlc, mplayer or mpv can play DVDs ### Actual behavior: the player fails with error message libdvdread: Get key for /VIDEO_TS/VIDEO_TS.VOB at 0x00010f60 libdvdread: Error cracking CSS key for /VIDEO_TS/VIDEO_TS.VOB (0x00010f60) even when libdvdcss is installed properly. same dvd can be played in a pure debian with similar setup (same versions of the libs) ### Steps to reproduce the behavior: use a video-player to play DVDs with css

Classic "Works for me" I've seen this with region mismatch errors - what hardware do you have?

[unman]

On Mon, Mar 06, 2017 at 01:00:29AM -0800, M. Dietrich wrote: #### Qubes OS version (e.g., `R3.2`): 3.2 #### Affected TemplateVMs (e.g., `fedora-23`, if applicable): --- ### Expected behavior: vlc, mplayer or mpv can play DVDs ### Actual behavior: the player fails with error message libdvdread: Get key for /VIDEO_TS/VIDEO_TS.VOB at 0x00010f60 libdvdread: Error cracking CSS key for /VIDEO_TS/VIDEO_TS.VOB (0x00010f60) even when libdvdcss is installed properly. same dvd can be played in a pure debian with similar setup (same versions of the libs) ### Steps to reproduce the behavior: use a video-player to play DVDs with css

Classic "Works for me" I've seen this with region mismatch errors - what hardware do you have?

[emdete]

the testing hardware is a t420s.

when it worked for you: are you sure you have tested with an css dvd (as far as i understand there are DVDs out there without)? did you have to install packages before it worked?

[emdete]

the testing hardware is a t420s.

when it worked for you: are you sure you have tested with an css dvd (as far as i understand there are DVDs out there without)? did you have to install packages before it worked?

[andrewdavidwong]

I had to look this up. Apparently Content Scramble System (CSS) is an old, obsolete DRM scheme for DVDs. Looking back at your original report, I see that you wrote:

the player fails with error message

libdvdread: Get key for /VIDEO_TS/VIDEO_TS.VOB at 0x00010f60
libdvdread: Error cracking CSS key for /VIDEO_TS/VIDEO_TS.VOB (0x00010f60)

"Error cracking CSS key" sounds like you're trying to use some kind of software to circumvent the DRM scheme, which sounds like it's outside the scope of Qubes. Unless there's something Qubes-specific about this issue, I'm inclined to close it.

[andrewdavidwong]

I had to look this up. Apparently Content Scramble System (CSS) is an old, obsolete DRM scheme for DVDs. Looking back at your original report, I see that you wrote:

the player fails with error message

libdvdread: Get key for /VIDEO_TS/VIDEO_TS.VOB at 0x00010f60
libdvdread: Error cracking CSS key for /VIDEO_TS/VIDEO_TS.VOB (0x00010f60)

"Error cracking CSS key" sounds like you're trying to use some kind of software to circumvent the DRM scheme, which sounds like it's outside the scope of Qubes. Unless there's something Qubes-specific about this issue, I'm inclined to close it.

[emdete]

what do you mean with "you're trying to use some kind of software to circumvent the DRM scheme"? i am not really deep into the topic, only thing i know is that some DVDs use CSS and it works when i install the libdvdcss. same setup does not work in qubes.

so either there is a "new, not obsolete" way to watch such DVDs or my aproach is fine but somehow blocked by qubes. i tried fedora and was not able to watch the given dvd with the installed video player totem.

if you mean that just producing DVD with CSS is obsolete it does not matter as CSS DVDs are still existing and can be played in other systems.

your article says "if the drive detects a disc that has been compiled with CSS, it denies access", and "The player has to execute an authentication handshake" and that operation is not supported by qubes?

[emdete]

what do you mean with "you're trying to use some kind of software to circumvent the DRM scheme"? i am not really deep into the topic, only thing i know is that some DVDs use CSS and it works when i install the libdvdcss. same setup does not work in qubes.

so either there is a "new, not obsolete" way to watch such DVDs or my aproach is fine but somehow blocked by qubes. i tried fedora and was not able to watch the given dvd with the installed video player totem.

if you mean that just producing DVD with CSS is obsolete it does not matter as CSS DVDs are still existing and can be played in other systems.

your article says "if the drive detects a disc that has been compiled with CSS, it denies access", and "The player has to execute an authentication handshake" and that operation is not supported by qubes?

[unman]

@emdete This isn't a Qubes issue -on the mailing lists are people using DVDs without problem.
A simple search shows other (non-Qubes) users having the same issue - almost invariably solved by setting region correctly, as I suggested. If you try that, (and other solutions proposed online), and nothing works for you, I suggest you ask on the qubes-users mailing list.
In answer to your question. I haven't tested this. I use DVDs on Debian - I dont use Fedora qubes - and all are fine. I did standard install vlc and used libdvdcss from the vlc site. Incidentally, I didn't know that CSS is "an old, obsolete DRM scheme" - learn something new every day.

@andrewdavidwong Suggest you close this.

[unman]

@emdete This isn't a Qubes issue -on the mailing lists are people using DVDs without problem.
A simple search shows other (non-Qubes) users having the same issue - almost invariably solved by setting region correctly, as I suggested. If you try that, (and other solutions proposed online), and nothing works for you, I suggest you ask on the qubes-users mailing list.
In answer to your question. I haven't tested this. I use DVDs on Debian - I dont use Fedora qubes - and all are fine. I did standard install vlc and used libdvdcss from the vlc site. Incidentally, I didn't know that CSS is "an old, obsolete DRM scheme" - learn something new every day.

@andrewdavidwong Suggest you close this.

[andrewdavidwong]

what do you mean with "you're trying to use some kind of software to circumvent the DRM scheme"?

I said that the text you provided sounds like that's what you're trying to do. CSS is a type of DRM. Cracking a CSS key sounds like a way to circumvent that form of DRM.

so either there is a "new, not obsolete" way to watch such DVDs

The "old, obsolete" comment is not about the "way to watch." It's about CSS as a DRM scheme.

if you mean that just producing DVD with CSS is obsolete it does not matter as CSS DVDs are still existing and can be played in other systems.

The "obsolete" comment is not about production. It's about CSS as a DRM scheme. It only matters insofar as you care about that fact (if it is a fact).

Incidentally, I didn't know that CSS is "an old, obsolete DRM scheme" - learn something new every day.

I said that it apparently is after briefly skimming the Wikipedia page.

[andrewdavidwong]

what do you mean with "you're trying to use some kind of software to circumvent the DRM scheme"?

I said that the text you provided sounds like that's what you're trying to do. CSS is a type of DRM. Cracking a CSS key sounds like a way to circumvent that form of DRM.

so either there is a "new, not obsolete" way to watch such DVDs

The "old, obsolete" comment is not about the "way to watch." It's about CSS as a DRM scheme.

if you mean that just producing DVD with CSS is obsolete it does not matter as CSS DVDs are still existing and can be played in other systems.

The "obsolete" comment is not about production. It's about CSS as a DRM scheme. It only matters insofar as you care about that fact (if it is a fact).

Incidentally, I didn't know that CSS is "an old, obsolete DRM scheme" - learn something new every day.

I said that it apparently is after briefly skimming the Wikipedia page.