quack is an mpv script to temporarily reduce the volume after a seek, in order to lessen the effect of any dramatic Hollywood audio mixing (read: ear damage) when scrubbing through a movie.

The volume is linearly increased back up to its original level. Repeated seeks before the transition is done work as well.

Drop quack.lua into your scripts directory.

There are two options which can be adjusted either by creating a script-opts/quack.conf with optionname=value inside or by passing --script-opts=quack-optionname=value on the command line.

• ducksecs: Number of seconds that the effect should continue for (default: 2)
• duckratio: A value from 0.0 to 1.0 as a multiplier for how quiet the initial volume level should be. For example, a value of 0.5 would start the reduced volume out at half the original volume. (default: 0.5)

GPLv3 because I can. See the file LICENSE for the full license text, which is larger than the code it covers.