JPEG2000 Decomposition Levels

[liloneum]

For 4K contents. Mixing essences with different decomposition levels won't work when playing on a 2K system.

E.G.

Reel 1 -- JPEG 2000 Metadata -- ImageComponents: bits h-sep v-sep 12 1 1 12 1 1 12 1 1 Scod: 1 ProgressionOrder: 4 NumberOfLayers: 1 MultiCompTransform: 1 DecompositionLevels: 6 CodeblockWidth: 3 CodeblockHeight: 3 CodeblockStyle: 0 Transformation: 0 Precincts: 7 precinct dimensions: 1: 128 x 128 2: 256 x 256 3: 256 x 256 4: 256 x 256 5: 256 x 256 6: 256 x 256 7: 256 x 256

Reel 2 -- JPEG 2000 Metadata -- ImageComponents: bits h-sep v-sep 12 1 1 12 1 1 12 1 1 Scod: 1 ProgressionOrder: 4 NumberOfLayers: 1 MultiCompTransform: 1 DecompositionLevels: 5 CodeblockWidth: 3 CodeblockHeight: 3 CodeblockStyle: 0 Transformation: 0 Precincts: 6 precinct dimensions: 1: 128 x 128 2: 256 x 256 3: 256 x 256 4: 256 x 256 5: 256 x 256 6: 256 x 256

[liloneum]

It seems that it is reproduced on any system.

[wolfgangw]

Good one, thanks

[liloneum]

The error appears in case of version files (if a "referenced asset file not listed in Assetmap dictionary"). It should not.

[AndreiGravelle]

I have noticed that running dcp inspect with the --as asset store command in the case of version files avoids getting this error. Empirically, it is a false error as if instead of reading the VF as incomplete, it reports an error on picture. Once the VF is linked to the OV, the error disappears.

[overlookmotel]

PR #84 prevents these errors on VF DCPs where the relevant asset is not present in the ASSETMAP.

[wolfgangw]

@overlookmotel thanks, see https://github.com/wolfgangw/backports/issues/93#issue-2028902692

Both issues - wrong error for VF/Supplemental wrt picture decomposition levels and sound channel format - should be fixed with https://github.com/wolfgangw/backports/commit/1356204b24cfeab316fbb67db576f35454b48e9f and https://github.com/wolfgangw/backports/commit/67d0d38a2f84deb5485ce9178b3ee635e924db6c

Can you confirm?