The code "ENFD-5372.avil" appears to be a unique identifier associated with TransferVista, a file-hosting or data-transfer service.
Your Experience or Analysis
ffmpeg -i ENFD-5372.avil -c:v libx264 -preset slow -crf 20 -c:a aac ENFD-5372.mp4
To provide a useful write-up, I wouldHowever, here is a general breakdown of what this file identifier likely represents: Technical Breakdown of the Identifier ENFD-5372.avil