Prior to 10.3.4, keying in FCPX was good but not great. This update introduced a redesigned chroma key effect with real-time feedback. You could sample skin tones, adjust spill control, and edge refinement without rendering. For MAC OS X users with Metal-capable GPUs, the performance was instantaneous.
: Uses optical flow to create new frames, seamlessly hiding jump cuts in dialogue. Remove Attributes Apple Final Cut Pro X 10.3.4 MAC OS X
Full compatibility with the MacBook Pro Touch Bar for scrolling through timelines and adjusting tools. What’s New in Version 10.3.4? Prior to 10
Version 10.3.4 introduced improved audio sync for up to 64 camera angles. On a 2017 iMac, syncing three Canon 5D Mark IV clips with scratch audio took under 2 minutes. Prior to 10.3.4