Samsung Galaxy S7: Last second of any video has no sound

[AC Question]

Hi, I have a Samsung Galaxy S7 and what seems to be an impossible problem to solve.

In any video I watch, be it YouTube, Snapchat, or even videos downloaded to my phone, the last second of audio is silent. I have tried resetting my phone to its factory defaults, which seemingly only made the issue worse, creating an even longer period of silence. What can I do?