I created my Steemit account yesterday and was able to post a video from Dtube.
However, hosting a video there is a bit more tricky than youtube. In my case, i use Windows Movie Maker to edit my speed drawings. What i tried was to save the video under "youtube "standard rather than the appropriate format that Windows Movie Maker will suggest. It works for the first video but not the second one...

On a side note, i personally don't want to use youtube as i share the same feeling of utter annoyance with that plate form and rather see Dtube and Steemit take the lead.