Hi, Please merge https://github.com/mjbshaw/FFmpeg-OpenJPEG-J2K-Encoder.git There is a commit that fixes #2942: ( https://github.com/mjbshaw/FFmpeg-OpenJPEG-J2K-Encoder/commit/a9d78e32f3cb1812dbf8b4f9cda25b18cff27463 ) Thanks, Michael Bradshaw