Hm ... https://github.com/google/lut3d_utils ===== Tone Map Metadata (3D Look-Up-Table) Injector A tool for manipulating production metadata <https://github.com/google/lut3d_utils/blob/docs/Static-Colour-Mapping-Metadata-lut3d-rfc.md>, specifically tone map metadata (3D LUT), in MP4 and MOV files. It can be used to inject 3D LUT metadata into a file or validate metadata in an existing file. <https://github.com/google/lut3d_utils#usage>Usage Python 3.11 <https://www.python.org/downloads/> must be used to run the tool. From within the directory above lut3d_utils: <https://github.com/google/lut3d_utils#help>Help python lut3d_utils -h Prints help and usage information. <https://github.com/google/lut3d_utils#inject>Inject python lut3d_utils -inject_lut3d -i ${input_file} -o ${output_file} -l ${lut3d_file} -p COLOUR_PRIMARIES_BT709 -t COLOUR_TRANSFER_CHARACTERISTICS_GAMMA22 Loads a tone mapping (3D LUT) metadata from lut3d_file and inject it to input_file(.mov or .mp4). The specified output_colour_primaries and output_colour_transfer_characteristics are injected too. It saves the result to output_file. input_file and output_file must not be the same file. <https://github.com/google/lut3d_utils#examine>Examine python lut3d_utils -retrieve_lut3d -i ${input} -l ${lut3d_file} Checks if input_file contains 3D LUT metadata. If so, parses the metadata and prints it out. In addition, it saves the 3D LUT entries to lut3d_file as a ".cube" file. ===== soooooo .... in theory you can use those for injecting and exporting those 3d luts in mp4/mov .. I wonder if ffmpeg/libavformat can be teached to do this, too?