Prerelease Final Cut Pro 10.4.9 with prerelease plugins from RED Apple Workflow Installer v16, and Final Cut Pro 10.4.8 with plugins from RED Apple Workflow Installer v15 tested on macOS Catalina, using an 11-second project with REDCODE® RAW 4:1 video, at 8192x4320 resolution and 23.98 frames per second, transcoded to Apple ProRes 422. Mac Pro systems tested with an attached Pro Display XDR. Testing conducted by Apple in August 2020 using 2.5GHz 28-core Intel Xeon W-based Mac Pro systems with 384GB of RAM and dual AMD Radeon Pro Vega II graphics with Infinity Fabric Link and 32GB of HBM2 each, configured with 4TB SSD as well as 2.4GHz 8-core Intel Core i9-based 16-inch MacBook Pro systems with 64GB of RAM and Radeon Pro 5600M graphics with 8GB of HBM2, configured with 8TB SSD.