Since version 1.30, Compresto installs a native Apple Silicon (arm64) build of FFmpeg, so this error shouldn’t appear. If you see it, update Compresto to the latest version: it detects an older Intel-only FFmpeg and replaces it with the native build automatically.The steps below install Rosetta, which is only needed for Compresto versions before 1.30.
1
Open Terminal (instructions here).
2
Type the following command in the Terminal window:
3
Press the
Enter key4
Wait for the installation to finish