WP 8.1 Video hub supports subtitles, anyone who's managed to make it work?

[NightFury2]

I have been trying different extensions (srt,sub,idx) and i can't seem to make it work.
has anyone managed to make it work?

 

[humblehyper]

I want to know too. I only tried srt, didn't work.

 

[Peter McNeill1]

No luck either. Option to turn them on is greyed out on mine.