Concatenating video files with audio

I am new to Shotcut & still learning. I have some music video files (in MOV & MPEG2 format) that I wish to concatenate & then burn to DVD. However, the audio level varies considerably among the files. How can I bring them all to a similar audio level so that the concatenated file is comfortable to watch & listen to. Note that I do NOT wish to expand or compress the audio, which introduces distortion, just alter the volume level.

Hi,

  1. Split the clip where the audio is supposed to change using “s” key or the split at playhead button.
  2. in View/Filters, select the audio filter “gain/volume” and reduce/increase gain.

Video: