Using simple_format and html_safe at the same time in Rails

In the @post.content, I want

1.simple_format, so content would have different lines rather than in a single line without breaks

2.html_safe, so user could paste some <embed> video link like youtubes

It's OK to use <%= simple_format @post.content %> and <%= @post.content.html_safe %> separately

But when I use them together: <%= simple_format @post.content.html_safe %>, html_safe is not working, and hence the <embed> video is not displayed

Could you tell me how can I enable <embed>code and simple_format at the same time? or is there other solutions to display the @post.content? Thanks!!!