On video timeline in Photoshop is it possible to mute the embedded audio in a video?

I have a video (recorded with an iphone) and I want to mute/suppress/strip out the embedded audio so I don't hear it when running (and processing) the video in Photoshop. I have removed the offending audio using VLC media player from the video and that works fine, but when the video is loaded onto the Photoshop video timeline, the sound is still there! Any advice or information appreciated.