[Q] Nexus 10 Disable HDCP (DIsable HDMI Copy Protection)

tgraupmann · Nov 21, 2012

I'm an android developer having a an issue with my Nexus 10.

HDCP (HDMI copy protection) is turned on making it not possible to capture videos on my development apps, please advise.

I'm using an ElGato to capture HDMI output which needs unecrypted HDMI output.

I can correctly see the display on my HDCP compatible TV. But on my capture software I just get a blank screen.

Where is the Android setting that disables HDCP?

Will I need to root my Nexus 10? Will I need to use cyanagenmod? Will I need to rewrite the firmware?

Or is this a simple setting I can toggle off?

I see other forum posts, but I don't see how an ODBC driver would make this work?

Thanks,

~Tim

Watcher64 · Nov 21, 2012

You will need to install a custom ROM to disable this ..

This ROM , http://xdaforums.com/showthread.php?t=1998585 has the option ..

espionage724 · Nov 21, 2012

Watcher64 said:
You will need to install a custom ROM to disable this ..

This ROM , http://xdaforums.com/showthread.php?t=1998585 has the option ..

Or compile AOSP possibly from source

tgraupmann · Nov 22, 2012

Apparently it's a 3 step process.

1) Unlock the boot loader (currently can't download)

http://www.androidcentral.com/how-unlock-nexus-10-bootloader
http://www.ibtimes.co.uk/articles/4...ung-nexus10-install-clockworkmod-recovery.htm
http://forums.androidcentral.com/ne...stall-clockworkmod-touch-recovery-mac-pc.html

2) Root the Nexus 10

http://xdaforums.com/showthread.php?t=2001868

3) Install the custom ROM

http://xdaforums.com/showthread.php?t=1998585

alias_neo · Nov 22, 2012

Is it not in developer options anymore?

You get developer options by tapping "build number" 7 or so times. They hid it in 4.2 by default.

espionage724 · Nov 22, 2012

alias_neo said:
Is it not in developer options anymore?

You get developer options by tapping "build number" 7 or so times. They hid it in 4.2 by default.

It isn't there on the stock ROM. I compiled AOSP earlier and it was there though.

tgraupmann · Nov 22, 2012

On Nexus 10,

After unlocking the boot loader, it's in download mode. Who designed this without a progress bar? How long should it be downloading? In fastboot mode is there a command I can run to get the download progress to check for an error? Or at least I want to be able to fastboot a command to start the download, and another command to query the progress? How many hours does it sit there with the Google X?

akhan47 · Nov 22, 2012

tgraupmann said:
On Nexus 10,

After unlocking the boot loader, it's in download mode. Who designed this without a progress bar? How long should it be downloading? In fastboot mode is there a command I can run to get the download progress to check for an error? Or at least I want to be able to fastboot a command to start the download, and another command to query the progress? How many hours does it sit there with the Google X?

Just hold power and turn it off.
Turn it on again while holding volume up and down.
Go to recovery mode.
Tap power and volume up at the same time. (you might have to do this a few times)
Clear cache and delete partition.
Restart.

alias_neo · Nov 22, 2012

tgraupmann said:
On Nexus 10,

After unlocking the boot loader, it's in download mode. Who designed this without a progress bar? How long should it be downloading? In fastboot mode is there a command I can run to get the download progress to check for an error? Or at least I want to be able to fastboot a command to start the download, and another command to query the progress? How many hours does it sit there with the Google X?

Bear in mine that "download mode - do not turn off target" doesn't actually mean it's downloading unless you started a "download" yourself, the only time that mode is used is with Odin, but I've only even seen it used on Samsung stuff and not nexus devices.

As long as you don't see the blue progress bar, and if you didn't start some process, you're okay to just switch off and get into the correct mode.

Sent from my GT-I9300 using Tapatalk 2

espionage724 · Nov 22, 2012

tgraupmann said:
Apparently it's a 3 step process.

1) Unlock the boot loader (currently can't download)

http://www.androidcentral.com/how-unlock-nexus-10-bootloader
http://www.ibtimes.co.uk/articles/4...ung-nexus10-install-clockworkmod-recovery.htm
http://forums.androidcentral.com/ne...stall-clockworkmod-touch-recovery-mac-pc.html

2) Root the Nexus 10

http://xdaforums.com/showthread.php?t=2001868

3) Install the custom ROM

http://xdaforums.com/showthread.php?t=1998585

1. Unlock bootloader with fastboot oem unlock
2. Re-stock (might be needed; otherwise device might just hang at Nexus logo); auto-reboot to System
3. Copy the custom ROM files (ROM, Kernel, Gapps) to the root of the Nexus 10 MTP device after setup wizard (might be /storage/sdcard for adb push)
3. Install TWRP or CWM
4. Boot to Recovery (TWRP or CWM)
5. Install ROM, Gapps, and Kernel, in that order
6. Wipe caches, reboot
7. Profit.

You don't need to root the device to install a custom ROM. You do need to install a custom recovery though.

tgraupmann · Nov 22, 2012

Thanks for your posts. I am unstuck, rooted, and on my way to defeat HDCP so I can record my developer video on my elgato.

tgraupmann · Nov 23, 2012

tgraupmann said:
Thanks for your posts. I am unstuck, rooted, and on my way to defeat HDCP so I can record my developer video on my elgato.

I successfully installed the custom rom. The HDCP option now appears in the android options where I can disable it.

Unfortunately the ElGato still shows black on my Nexus 10.

Is there a way to verify that Android is sending HDCP off data?

tgraupmann · Nov 23, 2012

Also with this ROM my bluetooth issues are still not fixed. I can pair my bluetooth controller, but it won't navigate the Android menus...?

tgraupmann · Nov 23, 2012

This is the bluetooth controller that I am testing with. It works fine on other Android devices, just not the Nexus 10.

http://www.amazon.com/gp/product/B0090WBXSM/ref=oh_details_o00_s00_i00

tgraupmann · Nov 23, 2012

And this is the Elgato which works on other Android devices, but not the Nexus 10, even with the custom ROM:

http://www.amazon.com/gp/product/B00840353W/ref=oh_details_o04_s00_i00

tgraupmann · Nov 23, 2012

A friend suggested I try a shell command:

C:\Program Files (x86)\Android\android-sdk\platform-tools>adb shell am broadcast -a com.motorola.intent.action.exterisplaystate --ei hdmi 1 --ei hdcp 0
Broadcasting: Intent { act=com.motorola.intent.action.externaldisplaystate (has extras) }
Broadcast completed: result=0

Is there a shell command I can use to change the "SET HDCP checking behaviour"?

And "checking", is that really affecting the HDCP encrypted output? How do I go about sending unencrypted HDMI output?

Someone mentioned compiling the ROM from source, is there a link to do something like that?

Thanks,

~Tim

tgraupmann · Nov 23, 2012

For me this is my first exposure to AOSP. So starting at the beginning wow so there's a website...

http://source.android.com/source/index.html

tgraupmann · Nov 23, 2012

It would be great if there was a Linux Virtual Machine all setup with the build environment ready to go...

darkuni · Dec 4, 2012

Did you ever find a solution to this issue? I, too, cannot record the HDMI output for developer use - and I'm using the above mentioned custom rom as well with the developer option checked (or unchecked, as it were).

There has to be SOME way to get rid of HDCP out on this thing ...

craigacgomez · Dec 4, 2012

darkuni said:
Did you ever find a solution to this issue? I, too, cannot record the HDMI output for developer use - and I'm using the above mentioned custom rom as well with the developer option checked (or unchecked, as it were).

There has to be SOME way to get rid of HDCP out on this thing ...

Well, with my AOSP+ ROM, anything played using the default HW decoder should not be HDCP protected... example playing an mp4 file using the Gallery2 app... if you still see it protected, the only option I see is digging into the kernel source for the exynos 5 HW decoder or disabling HDCP in the kernel build... I'd be happy to provide a test kernel with the second option if needed!

[Q] Nexus 10 Disable HDCP (DIsable HDMI Copy Protection)

Senior Member

Senior Member

Senior Member

Senior Member

Senior Member

Senior Member

Senior Member

Senior Member

Senior Member

Senior Member

Senior Member

Senior Member

Senior Member

Senior Member

Senior Member

Senior Member

Senior Member

Senior Member

Senior Member

Senior Member

Similar threads

Top Liked Posts