Let’s say I have a 10 second video. I need to reduce the volume of the audio track from the 4th second to the 8th second, but gradually. If If I use the split and apply filter method, the volume will change, but instantaneously. That’s not what I want. I want the transition to be over a second or so.
I thought I understood and it seemed like you want the audio to fade from the 4th to the 8th second, so that would be a gradual fade over 4 seconds.
Two options I can think of.
Split the track where you want the audio to begin fading, then apply an audio fade filter and set the length or drag accordingly:
But maybe that’s where you’re having some problems and it isn’t accurate enough for your requirements, in which case, for more control:
2. Again split the track where you want the fade to start, then “detach audio”. That copies the audio to its own track so you can use the Gain/Volume filter and apply keyframes to that:
While on autopilot I often split video when it is strictly unnecessary, in order to apply certain filters to a specific section (glitch with a slide out to the right on text, for example). In my earlier learning days I found undoing mistakes when working with keyframes and multiple filters, changing the speed or length of effects etc, that it was easier to isolate that segment. Generally there is no harm no foul, but this is something I need to be more aware of!