Support for mkv files

Hi Frank,

Thank you for reaching out to us with your question.

MKV files are multimedia container formats and not simple audio or video compression formats, so they will not play in HTML5 web players. MKV actually might play, but only in the Chrome browser, so we generally don’t recommend using this format. See our Video Encoding for HTML5 guide: https://foliovision.com/player/basic-setup/encoding.

Thanks,
Chiara