almor3ebx2

1) Add media:
http://i.imgur.com/YV85GxG.png

2) Select the uploaded video:
http://i.imgur.com/liZQsda.png

3) Done:
http://i.imgur.com/FT0Lfyb.png

4) Video doesn’t play in posts, only audio plays:

OnPaste.20160620-055646

Yes there are no problem with video, in fact even .mp4 videos experience the same issue.

I embedded those videos with “add media” just like normal, but also tried 3 other player plugins with shortcodes and got same results.