I would suggest to place your files in a CIFS share and let the Receiver grab them. With 9.6 version, you can also Tail a file sitting in a CIFS share.
When you upload a file to a data source via GUI, it is formatted and place on ERC in following directory.
(Note, the number 11 is a unique ID of the data source. You can find the unique ID in /etc/NitroGuard/thirdparty.conf)