P-20HD: How to mute the audio of the playback video (replay). June 04, 2021 05:16 Updated Follow In the menu, go to: [MENU] → [Audio Input] → [REPLAY] → [Mute] → [Off] This mutes the audio of the playback video (replay) and outputs it. Related articles P-20HD: How much can I reduce the speed during slow playback? P-20HD: Is it possible to add external audio input from the AUDIO IN jacks to the playback video (replay) and output it?