Hi there, just bought the sony BDP-S190 to watch MP4s and MKVs. But until know I having some problems:

MKVs are not seekable and trying to find something to fix this in mkvtoolnix documentation and no success.
MP4s are full seekable, but trying to put SRTs or IDX/SUBs in the container but the player doesn't show any existence of subtitles.
Someone can help or have tips to fix these problems?

Happy New Year for everyone!