About video player


#1

I am developing web opencv effected video player
http://monkeytalk.jp
I checked this player in various browsers.

for example )
http://monkeytalk.jp/wa/OFNewPlayer.html?http%3A%2F%2Fmonkeytalk.jp%2Ffiles%2Fvideos%2F2018%2F11%2F06%2F1541486024cd779-sd.mp4

I found if I play some videos in iOS,I cannot push any buttons(they are developed by ofxGUI)
Do you know some reason of it?
Is it come from openGL?But I can click it in mac.
I cannot think any reasons.