Media Encoder sees HEVC MP4 as audio file?

I'm trying to transcode a HEVC H.265 MP4 file to H.264 format.

1. When I drop the file into the queue, it shows an "audio" icon (conversly when I drop in another video type, it shows the little reel/audio icon) 
2. I can dictate the export format as H.264 HD 1080 which is what I want
3. When I click Play/Export, the preview screen is completely black. I can also confirm the exported H.264 file also is an entirely black screen with the audio from the file.

Also note I can open and play this file perfectly in VLC Media Player.

Thanks for your help