Well, the 3% is negligible, a fair compromise considering you get the SP rewarded in liquid STEEM.. my opinion though.

3Speak charges a monthly fee to upload though, doesn't it? As well do they still take 10% from your author rewards right off the bat, so technically likwid would only be receiving 100% of your 90% of author rewards (or 40% of your creator reward, however you want to look at it) ?

Better off storing your videos on IPFS and embedding them yourself at that rate :/