Can I share a classic interactive videos to social media?

Classic interactive is available only where the standard ZenVideo player can live or be embedded.

When sharing to social directly (i.e., using Publish to Social, or uploading the raw vid file), that strips the ZenVideo player out of the equation, so the interactivity will not be there.

As an alternative, you can share a direct link to the ZenVideo video page or another page (e.g. your website) where the ZenVideo player is embedded in a social post. This would direct your followers to the player on that page, where the interactive features would be present.