playing WhatsApp videos with your default MX Player on Android

in the past WhatsApp videos opened by default in the video player you annoted on Android as the default video player. in my case all videos in my Android phone (an Xperia z ) will open with MX player which is the default player I made for all video and audio files. however newer versions of WhatsApp will force all videos to open in an internal WhatsApp player which is a very rudimentary player. it will not automatically Orient the video besides volume boosting. other than actually use an explorer and navigate to the WhatsApp video folder , is there a way to force all WhatsApp videos not to use the hapless internal WhatsApp player but use MX Player. I don't think an older version of WhatsApp that permitted will run without problems right now.,.. I very consciously avoided WhatsApp upgrades to a point where my WhatsApp itself crashed repeatedly and would not work & that is when I upgraded