Instagram quietly introduced a tweak to the way it presents auto-play videos.
Prior to the change, all videos on the Facebook-owned photo- and video-sharing network automatically defaulted to no sound, regardless of the settings on the devices they were being viewed on. Instagram Stories were the exception, as they followed device settings.
Users who wanted to hear sounds on videos would only get audio on the video that they turned on the volume for, and if they wanted to view subsequent videos with sound, they would have to turn on the audio for each video.
Now, if an Instagram user opts to turn on the sound for a video he or she is watching, the sound will remain on for all subsequent videos—organic and ads—in the Instagram feed, Explore, Stories and users’ profiles during that session.
Audio can still be turned off by tapping the speaker icon in the bottom-left area of videos, and new sessions begin with no audio by default.