Facebook has recently made a serious change on how we see and hear videos on their platform. Facebook now has audio sound as a default. This is done in an attempt to people watch more videos and for a longer period of time. In this way Video as a content will receive an even bigger boost!
It will also give even more thrust on native Videos on Facebook thus encouraging publishers and businesses to invest even more on producing and publishing such videos. The effort now will shift in making those videos even more eye catching or interacting for viewers to get the message across.
Although sound can be turned off on the settings of your Facebook profile (see here how) it remains to be seen how users will respond and if this effort by Facebook will be preferred.