To use HTC Vive it is necessary to install Vive Setup first.
In addition, you can find more information about it in Steam VR Support site.
To play our videos you can download VirtualRealPlayer.
Once downloaded, please, unzip it, go to Config\GeneralConfig.txt and change mode to vr_mode=SVR.
It is also recommended to calibrate your HTC Vive for the seated mode.
To avoid problems such as black screen or flipped image, we recommend to install the newest Klite codecs,
Once installed, please open the 'Codec Tweak Tool'. In the next window select 'Preferred decoders'.
Once there for H.264 please, select in both columns 'ffdshow'. If any issue happens, please try 'LAV Video' instead.
Apply and close.