+In addition for a computer with dual graphics cards, you can select your specific device with an environment variable
+to decode and encode. For example:
+\begin{lstlisting}[numbers=none]
+CIN_DRM_DEC=/dev/dri/renderD129 CIN_DRM_ENC=/dev/dri/renderD128 ./cin
+\end{lstlisting}
+and substituting your specific location instead of /dev/dri/renderD129 or D128.
+