Serviio

How I can play MKV videos with external .srt subtitle in WD TV Live?

My (limited) understanding is that the WD Live doesn't support external subtitles with MKV files over DLNA.

Until WD Live firmware upgrades fix this (if ever) you will either have to:

• Embed the subtitles into the MKV file using a tool like mkvtoolnix or XMedia Recode; or
• Burn the subtitles into the transcoded stream using Serviio

If it was me, I'd do the first option as it is a quick, once off process, that doesn't involve transcoding the video stream.