Ok great. And maybe Andy will have some ideas, as the forum video embed works for most on the current Simple:Press version. 

Thanks again for your time!

np. glad to help… just want to solve it…  will think on it and see what Andy says… but leaning towards the theme based on info… Thursday release may help…

If you wanted to zip up a copy of the WP theme and send it to me so I can test it here with embedding then I can give you an email address to send it to.

Sure, should I just zip up everything in wp-content/themes/themefit-hybrid ?  Let me know what email address to send it to.  Thanks.

yes. send it to support at simple-press dot com…

Sent, let me know if I can take anymore screenshots of options or anything to help.  Thanks!

received…  will see if one of us can look at today…  time might be difficult with the 5.1 release coming tomorrow…

It is not urgent, thank you.

Well – I CAN tell you that the problem comes from these rules in your WP theme style.css file:

.responsive-container
{
    position: relative;
    padding-bottom: 56.25%;
    padding-top: 30px;
    height: 0;
    overflow: hidden;
}

.responsive-container iframe,
.responsive-container object,
.responsive-container embed
{
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

However solving the problem and not having any knock-on effect on embeds in other places on your site may need someone with more cunning CSS skills than I…

I searched all the theme files for responsive-container and it only occurs in themefit-hybrid/js/themefit.init.jQuery.js lines 16-18; it is only called for pages on iphones.

If you check the browser view source for http://markwaid.com/mwforum/forum-bugsproblemsissues/this-is-a-test/ does not have responsive-container in it anywhere.  

When I embed a video on my test site here using your theme I get the iframe within a div with a class of ‘responsive-container’.
And the CSS for that is in the style.css file of the theme

I see this on your site too at the page you linked to above.

I have repeatedly done finds on the browser view source for the http://markwaid.com/mwforum/forum-bugsproblemsissues/this-is-a-test/ page and I don’t get ‘responsive’ at all.  I did a find for ‘container’ and looked at each result and none were ‘responsive-container’.  Can you paste a chunk of code from your view source including ‘responsive-container’ so I have other things near it to Find for?

er, i mean your view source for http://markwaid.com/mwforum/forum-bugsproblemsissues/this-is-a-test/

did you search the theme code?

I had a friend view source on that forum page and look for ‘responsive’ and she didn’t find it.  I saved the HTML source of it locally and opened it with BBedit and did not find ‘responsive’