Plug-ins always depend on the host as they need to receive one or more frames from the host to work on and then return the processed data to the big editing brother. If for any reason, this exchange is not possible or incomplete, plug-ins are unable to implement their magic.
The more frames a plug-in needs for its work, the more input frame preparation work has to be done by the host and the higher the chance that something might go wrong on the side of the host.
When the plug-in does not get frames it needs for its work, Neat Video reports that to the user via a message box with a list of possible causes intended to help users check those points on the host side and hopefully resolve the problem there. Check out our blog post to learn more.