The QVR changed its way by using that Media Viewer to decode the stream for a snapshot. Using a unified decoder provided by system helps us to have more stable snapshot output.
After you install the Media Viewer, you might need to restart QVR Pro to allow it re-detect the CAYIN Viewer, or open the rule settings in QVR Pro to apply the settings again?
And about CAYIN Media Viewer, it is a new media viewer in QNAP for process medias and unlike CAYIN MediaSign Player that require to activate a (even free) license through License Center.
