Hello,

The seller can upload the video to the product and in its description. Enable the Video URL option from the Global Config > Backend Display Options. Go to the product and add the URL of the youtube/Vimeo video URL.

You can always change the editor to Codemirror or TinyMCE from the CK editor.

Thanks

I don't want to link to youtube, I want to be able for the mp4 to sit on my server.