Subtitle don´t shows

Legacy 2nd gen Apple TV
1

I have som problem with subtitles.

I can se that the right subtitle is chosen but it don´t shows.

I run aTV Flash (black) 1.1.1

2

You may need to adjust the encoding type. Details for doing this can be found here.

3

I will try this, but they are showing at the beginning for a couple of seconds and then disappears.