Conformance and runtime of SDR and HDR sources must be identical, meaning the only acceptable difference between SDR and HDR mezzanine files is colorspace. Misaligned HDR/SDR asset parts will result in re-delivery request. In particular, the following must be identical:
Any timed text or audio files delivered with UHD/HDR package should conform to both the SDR and HDR mezzanine files. The inventory should reference both the SDR and HDR mezzanine files. Further, the HDR10 metadata must be included in the inventory section of the MMC. Both the SDR and HDR mezzanine files should then be referenced by the same presentation. For more information, see the MMC sample files.
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