Such as Logitech's Revue or try renaming the .mp4 to .avi.
If you are watching this story you find folk asking for PC like performances on Smart TVs (which are not that smart.)
When playing mp4 files through usb on my Panasonic TH-L47E5D, subtitles are not displayed. The name of the .srt file and .mp4 file is the same as is the norm. The TV does not show any options in the video setup to turn the subtiles on. But the interesting thing is that when i ve a avi file with subtitles it gives me the option to turn on the subtitles. Once i do this the subtitles are displayed for the mp4 file too. Is there a solution to this?