MP4 With Soft Subtitles

[Joshua Jackson]

I'm working on a subtitling project and I'm trying to get multiple-language subtitles working on my Windows Phone.
My understanding was that Windows Phone 7 only supported hard-subs.
I was really hoping that Windows Phone 8 would support soft-subs, but none of my methods of working with them have worked.
Does it have any support for that?
I have external .srt, .vtt, .ttxt, and embedded.
JJ

 

[vedichymn]

Not that I'm aware of, no.