DRM support in Firefox OS

What DRM formats does Firefox OS support?

I found EME https://hsivonen.fi/eme/, but it isn't helpful.

I just want to play videos on fxos from dev point of view.

• Mozilla does not share any specification to DRM support at all.
• I've asked at Mozilla IRC (#fxos) more than five times during last week and nobody replied.
• Mozilla has disabled account creation (DOS attack) for at least one week, so could not ask there either.

Firefox OS builds on open standards and any other things like DRM support is in hands of manufacturer who wants to build on Firefox OS.

E.g. Panasonic builds on Firefox OS and adds their own features like DRM support, specifically PlayReady in their HTML5 v2.0 SDK. Source developer page.