I tried embed Code. I can paste inside, but it doesn't work. In fact, when I come back on settings, the link is truncated inside the field. I guess it is a problem with length of characters inside this field.

Here is my code (not a good one, I changed some letters, so it won't work as a link....)

<iframe width="512" height="384" frameborder="0" scrolling="no" src="http://api.dmcloud.net/embed/4e1588a2f3zert25e11a590002eeeee32/4e15929zzb94a6f66b8300eedd02fe?auth=0-64-bz2w0jfl-5913ba50db9a18079925b61f6761103f-eJwrSrMFAAJiARY=&autoplay=1"></iframe>

Well, I took some time to test it again.

New fresh DNN install 5.6.2, plus Media Module 4.0. I put some lorem ipsum code and count characters.

It saves in database 250 characters.

JC

Almost. Just changed some letters because it's a private video.

But I tested with some Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed non risus. Suspendisse lectus tortor, dignissim sit amet, adipiscing nec, ultricies sed, dolor. Cras elementum ultrices diam. Maecenas ligula massa, varius a, semper congue, euismod non, mi. Proin porttitor, orci nec nonummy molestie, enim est eleifend mi, non fermentum diam nisl sit amet erat. Duis semper. Duis arcu massa, scelerisque vitae, consequat in, pretium a, enim. Pellentesque congue. Ut in risus volutpat libero pharetra tempor. Cras vestibulum bibendum augue. Praesent egestas leo in pede. Praesent blandit odio eu enim. Pellentesque sed dui ut augue blandit sodales. Vestibulum ante ipsum primis in faucibus orci luctus et ultrices posuere cubilia Curae; Aliquam nibh. Mauris ac mauris sed pede pellentesque

and it does the same: just first 250 characters saved in the database.