Embedded mp4 video in Powerpoint Connect v11

I'm trying to use embedded videos (mp4) in Powerpoint files in Adobe Connect V11 using Powerpoint on a Windows 10 PC & Office 365 versions. I'm sharing a ppt document in a pod and it uploads OK but doesnt seem to play. I've tried several different files and methods and none work. I get a grey torn page icon instead of the video. I thought this was going to be possible in ACv11? Maybe I'm doing it wrong? I know I can upload Video by itself and share the video as a separate document & that works fine but thats a bit of a nuisance. Any hints gratefully received 🙂 Thanks Gareth