Cross-fade audio clips with Effects

Use case: I'm trying to duck music under narration. This includes lowering the volume and EQ-ing down the broad range of "human vocals."

Rather than fussing with keyframes, this is easily done by splitting the music clip, and adding a cross-fade transition. Then all clips that need to be ducked can be done all at once with a Copy/Paste Attributes across dozens of edits. Very few steps, mostly keyboard-able, and easily fine-tuned by simply adjusting the transition lengths.

Problem: Audio cross-fade transitions do not render plug-in effects (Including Fairlight FX). The Vocal Channel or Multiband Compressor effects do not crossfade-- they just hard-stop/start at the actual clip boundary. And while the built-in EQ settings for each clip DO cross-fade correctly, they can't be set to drop out a wide swath like the human vocal range.

Current Workaround: When I want to make a transition between a normal portion of a clip and the portion that has effects applied, I split the clip and move the new section down to another track. then drag the edge of each clip so that they overlap. Then drag the fade handles so that the clips cross-fade. Quite a lot more steps, especially if you have a lot of instances across your sequence. And if I have to move the timing of the cut or transition, it turns into a LOT of dragging for each duck.

Possible Solutions:
1. Expand the capabilities of the per-clip EQ to allow for a wide, sloping adjustment like what you can do with the Vocal Channel effect.
2. Render Fairlight FX (and any other plugins?) effects across audio transitions

And not to be an ass, just for reference, I developed this technique in Premiere, and would love for the trick to work here as well.

I must ask, why do you feel the need to eq the music when mixing with narration?

Effects absolutely should render through cross-fades. The fact that they don’t is a serious bug. I spend a lot of wasted time manually making J/L cuts on a separate track to work around this inane issue.

Particularly bad with something izotope RX voice de-noise, a staple in post production I would think… having noise suddenly pop in full-decibels during an audio cross fade it is just not on…

+1

Audio cross-fade transitions do not render plug-in effects (Including Fairlight FX)

Wouldn't that be more of a bug than a FR?

It’s months later and with new versions of resolve and new version of RX, and yeah… I agree.,, this is a bug!

Compounded by some VST effects just randomly not rendering… sometimes they do, sometimes they don’t, on the same clip, depending on when you hit play or export.