Embedable Media Card doesn't match how it looks within Twitter

[sssssssssslava]

Hey, we have a custom media card that plays video highlight reels and while it works fine within Twitter:

https://twitter.com/TwitchClips/status/606543000227807232

When we embed it in a website, the media content is invisible (click on the Instant Highlights tab):
http://videogami.tv/for/twitch

Any ideas what is causing this?

Thanks!!

[andypiper]

The video is showing up just fine for me. Are you using a specific browser?

[sssssssssslava]

I am using Firefox on Windows 8. I can also confirm that Chrome on MacOS shows the video.