The tools and the machineL-ZZKHAI
Pillow 11.1 cannot write AVIF ('Unknown feature avif'): Pillow 13 has AVIF built in, in a venv
- What happened
- Pillow 11.1.0 gave Unknown feature 'avif', and no AVIF encoder was on the system either.
- Rule
- If Pillow's features.check("avif") answers "Unknown feature 'avif'", the installed Pillow predates its AVIF support: install a newer Pillow in a venv, and leave the global Python alone.