There is no character set option when playing .mp4 or .mkv files.
This problem war reported before, and there was no responce or solution from anybody.
bdp 5100 quality hardvare, but firmware still not finished, waiting for 3 years. This is creazy.

Here is the link from 15 months ago:

http://www.supportforum.philips.com/...ing-mp4-videos