Question: can kindle read mkv files?
Answer: Both Kindle Fire and Kindle Fire HD can only play MP4, 3GP and VP8 (. webm). That is, if we try to play other video formats like AVI, Xvid, DivX, WMV, MKV, FLV, MOV, M4V, MXF, WTV, MPG, ASF and etc on Kindle Fire (HD), it will ends in fail.