I'm embedding a YouTube video on a site in German.
I know how to add a YouTube link using the editor mediabox.
What I don't know is how, in the editor, I can add the command to force the choice of language and subtitles.
I've found a solution, which is to add the following command immediately after the link "&hl=de&cc_lang_pref=de" so, as an example the full link would be
The editor, however, removes the added part and adds "rel=0" instead.
Can you explain how I can keep the added part, using the options in the mediabox? I'm currently just changing it by hand in the code view section.