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Interesting. OpenJPEG, according to https://github.com/uclouvain/openjpeg/wiki/DocJ2KCodec implements UP TO 5 levels for 2k, and UP TO 6 levels for 4k.
-cinema4K
Cinema4K profile. This option generates a codestream compliant to the Digital cinema specifications for a 4K resolution content. The value for frame rate should not be specified. Value is initialized to 24fps. The main specifications of the JPEG Profile-4 (4K Digital Cinema Profile) are Image size = 4096 x 2160 (at least one of the dimensions must match 4096 x 2160) Single tile Wavelet transform levels = Maximum of 6 and mininum of 1 Wavelet filter = 9-7 filter Codeblock size = 32 x 32 Precinct size = 128 x 128 (Lowest frequency subband), 256 x 256 (other subbands) Maximum Bit rate for entire frame = 1302083 bytes for 24 fps Maximum Bit rate for each color component= 1041666 bytes for 24 fps Tile parts = 6; Each of first 3 tile parts contains data necessary to decompress one 2K color component, and each of last 3 tile parts contains data necessary to decompress one 4K color component. 12 bits per component
While SMPTE ST 429-2:2013 says:
'There shall be 5 wavelet transform levels for 2K picture essence. There shall be 6 wavelet transform levels for 4K picture essence.'
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