Just tried to saving file Welcome to Word in Word 2016 and test open to LibreOffice Writer in Windows 10 version 1803 x86, the expected result that just image, not video.
I just pick and save content from Template Word 2016 about "Take a Tour" and there was some video.
After save it and open another office program in LibreOffice Writer 184.108.40.206 and I click video content and just image
User Profile Reset: No
OpenGL enabled: Yes
Enable OpenGL doesn't affected
Created attachment 144911 [details]
Welcome to Word 2016
This sample file was picked and saved from original Template from updated Word 2016 app. I hope this will developed and support some video content
Created attachment 144912 [details]
Using Word 2016
Document open in Microsoft Office Word 2016
Created attachment 144913 [details]
Using LibreOffice Writer
Document open in LibreOffice Writer 220.127.116.11
You can't confirm your own bugs. Moving it back to UNCONFIRMED until someone
else confirms it.
Writer does support video, but it fails to understand it in this case. I tested various versions on Windows and they all showed it as an image.
Arch Linux 64-bit
Build ID: bfa6aeb379e5dfcf6f1f97b3365ab551995ab3d5
CPU threads: 8; OS: Linux 4.18; UI render: default; VCL: gtk3_kde5;
Locale: fi-FI (fi_FI.UTF-8); Calc: threaded
Built on 28 October 2018