Okay, at first thank you very much for answering! Blackmagic Design calls the JPEG2000 encoding option “A high-quality compressed image sequence format used for DCP encoding.” and the “Delivery Page” of Davinci Resolve calls the codec option of the JPEG 2000 encoding “2K DCI Scope” (in my case) – Since you wrote the entire openDCP application you propably know what you are talking about but it sounds weird to me that Blackmagic Design isn’t able to build an DCI compliant encoding of a J2K sequence, when they call it “DCI”… I gonna test it on wednesday at a cinema…