Following this video you can easily play AVI files on PS4 Pro from usb drive or via Plex Media Server by converting AVI to PS4 Pro compatible video and audio file formats.
Official Guide(More details here): http://www.pavtube.com/play-avi-on-ps4-pro.html
Pavtube Video Converter: http://www.pavtube.com/video_converter/
Pavtube Video Converter for Mac: http://www.pavtube.com/video-converter-mac/
Still wanna to know more tips about video/audio playback or editing? Please feel free to Email Us: support@pavtube.com