Not hearing audio

As I'm previewing my edit on after effects, I can't hear anything but background music of the video. I tried turning up the audio levels and all I hear is background music of the video, till I then realized the audio for it is HEVC. I remember it was h.264 before because I used to make an edit of the same video and heard people talking in the video, but now all of a sudden, it's hevc so I can't hear it but just background music which I do not want. I want to convert but the video I'm using is a whole movie cause I'm making an edit of a movie. I tried converting it but it took WAY too long. Any way to solve this?