When you drop a Cross Dissolve transition onto a clip in Final Cut Pro it applies the transition to both video and audio. That’s great – typically that’s what you want – but sometimes you don’t want that.
Contrary to what you might read online or what the dumb robots might tell you (because they just plagiarise it from those same Reddit threads and YouTube videos), you can’t simply “Expand Audio” and apply the Cross Dissolve to just the video lane1. You can detach the audio entirely, but that’s heavy-handed and may make your life much harder downstream (since Final Cut Pro will then treat the separated audio and video as completely independent clips).
Actually, there’s a simple ‘hack’ which works:
- Drag the Cross Dissolve (or similar) onto the clip.
- Select the clip and “Expand Audio” (from the Clip menu, contextual pop-up menu, or by pressing ⌃S). This is really just to get access to the audio track that’s otherwise hidden under the Cross Dissolve.
- Carefully drag the audio fade-in handle to the edge of the clip, to exactly where the tooltip says the offset is zero. Don’t go too far – if you go over the end of the clip it’ll re-install the audio fade!
It feels like that shouldn’t work – like it’s actually a subtle bug where Final Cut Pro actually intends to ignore your zero-duration fade-in and reset it back to the full length, like it does if you drag just a pixel too far. But hey, thank goodness for some bugs!
- Maybe this did work in an earlier version of Final Cut Pro, but it definitely does not in 11.2. ↩︎
