Video with no audio?

video with no audio? yesterday I tried to project a video in full service and it did not come out in audio I had to put maximum audio controls and it had no sound it was an mp4 video would you like to know if you are working on this detail?

Thank..

Is there a version to solve audio video problem?

Thank you..

Make sure you have the "Main Audience Display" on and set to a display. That is the only screen output that will include audio.