Can sound be reduced when file is exported?

I have a recording that is too loud. It is a file that is being put on a video and it does not match the other sound on video for volume. Can sound be reduced when file is exported out of Audacity? I tried some of the volume sliders but the sound did not reduce upon export.

Thanks

Instead of the sliders, use Effect > Amplify and choose the amount of volume reduction you want in the top box. For reference 50% is -6dB.

Koz