I am looking for a movie conversion program to convert mkv movies with embedded subtitles to be put on iOS devices. While there are various tools readily available such as Free Studio, etc, these tools neglected the embedded subtitles in the .mkv movie files, resulting in completely missing subtitle features from the movie files.
Normally, if you play .mkv files, VLC player, for instance, will automatically detect and render these subtitles in real time.
So what I want is to watch these movies on my iOS devices while at the same time, having the embedded subtitles intact. Of course, iOS do not support mkv directly, so some other methods such as format conversion are required.
What choices do I have?
If possible, I would like to have a program that parse the embedded subtitles and render all the subtitles directly onto every frame of the movie files. Multicore and CUDA support are a plus.