Why does the NDI proxy stream state: “The video decoder is not found”? 

When creating a video stream, nearly any resolution can be used, provided the resolution is a height and width is a multiple of 16, but the proxy (sometimes called low-bandwidth) stream has a more direct limitation: it must have either a height OR width of 360. If not, then the proxy stream will be identified by our SDK as being a non-compliant stream and will be rejected with a message “video decoder not found.”