Hello Robert,

You can insert css codes below into your template's stylesheets

body div#fd.es.w320 .es-stream-preview .stream-preview-image {
height: 110px;
}

Hello Robert,

After some investigation, the issues is come from the mobile templates that you are using with wrong syntax on /templates/mobile/index.php. Please check screenshots http://screencast.com/t/Nct2tYrc.
I have moved the blocks of codes before </head> tag for you.

Hi Chang and thanks for the updates. Unfortunately the css code did not work. The preview image is still the same height. Any ideas?

Hi Robert,

Ignore the css codes, the video thumbs should display well in Safari now, please clear browser's cache and check. http://screencast.com/t/pSxI49IBczkx

Hi Chang, the issue is not with mobile browser but rather in safari desktop view. which is still displaying with the same height as before. I should have mentioned that before. I cleared my cache and get the same result.

Hi Robert,
This is weird the thumbnail don't have height issues in Safari (laptop) http://screencast.com/t/2MlZIiLm8S9h. Can you elaborate more on this?

People still use Safari? Lol