When it comes to content, video rules. And a great thing about video is, that with the one video, you can actually have three pieces of content.
\nThere's the video itself, audio can be extracted from the video and text can be extracted from the audio.
\nSo you produce some video which exhibits expertise and authority.
\nYou post it on social media to get interaction and exhibit trust.
\nExactly what Google's looking for.