[vlc-devel] How to ensure HDCP connectivity?

Peter Tap ptrtap at yahoo.com
Wed Mar 21 04:45:46 CET 2012

Thank you for your help, Remi. As we are using nVidia cards, I have posted this on nVidia forum.


 From: Rémi Denis-Courmont <remi at remlab.net>
To: vlc-devel at videolan.org 
Sent: Tuesday, March 20, 2012 9:37 AM
Subject: Re: [vlc-devel] How to ensure HDCP connectivity?
Le mardi 20 mars 2012 18:22:59 Peter Tap, vous avez écrit :
> When playing through VLC, I need to ensure that the user is using HDMI
> output and HDCP compliant display. Is there any support within VLC to
> detect HDCP?

The video output plugin can refuse to output anything. It can also and 
alternatively requests scaling down to SD though that would be inefficient; 
the GPU is usually far more efficient for video scaling.

> If not, I would appreciate it if someone can point me in the
> right direction for any HDCP programming sample? 

HDCP negotiation is a matter for the hardware output, not for VLC. You need to 
check which whichever video output and/or audio output API you happen to use, 
how HDCP is exposed if at all.

> Perhaps I can write a
> wrapper code to ensure the presence of HDCP before firing up VLC.

Rémi Denis-Courmont
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