Other common & widely used way for embedding video is via Iframe. Iframe html code will have by default responsive behaviour & will use Embed URL as it's src and will play your video with Publitio Player.
Find the Insert player shortcut below the title of your file and click it. Your file is now embedded onto your page/post.
Alternatively, you can select more options, and then select Embed/Player codes
Click the Copy iframe button and exit Publitio plugin
Paste the code onto your page.