On Sat, May 27, 2023 at 5:11 PM Andrew Randrianasulu < [email protected]> wrote:
> > > сб, 27 мая 2023 г., 18:02 Paul B Mahol <[email protected]>: > >> >> >> On Sat, May 27, 2023 at 4:48 PM Andrew Randrianasulu < >> [email protected]> wrote: >> >>> So I was wondering if some kind of 3d lut can be saved in media files >>> directly ...and answer seems to be yes? >>> >>> https://github.com/google/lut3d_utils >>> "A tool for manipulating production metadata, 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." >>> >>> I wonder if libavformat's mov de/muxer can be extended for handling >>> those cases ..... >>> >> >> Ever heard about HALD CLUT? >> > > > no, thanks for pointer! > > http://underpop.online.fr/f/ffmpeg/help/haldclut.htm.gz > > http://www.quelsolaar.com/technology/clut.html > Generally its just different representation of lut3d data. > > > ==== > > A Hald CLUT is an image that has a specific color pattern on it. In this > pattern all colors in the color space are represented. An application that > uses the HALD CLUT image to color correct an image, takes a source image > color and looks it up in the color pattern of the HALD CLUT, and the color > it finds in that place is the corrected color that should replace the > source color in the destination image. If the color doesn't exist in the > CLUT, one can look up several colors and interpolate between them. > > ==== > > >> >>> _______________________________________________ >>> Libav-user mailing list >>> [email protected] >>> https://ffmpeg.org/mailman/listinfo/libav-user >>> >>> To unsubscribe, visit link above, or email >>> [email protected] with subject "unsubscribe". >>> >> _______________________________________________ >> Libav-user mailing list >> [email protected] >> https://ffmpeg.org/mailman/listinfo/libav-user >> >> To unsubscribe, visit link above, or email >> [email protected] with subject "unsubscribe". >> > _______________________________________________ > Libav-user mailing list > [email protected] > https://ffmpeg.org/mailman/listinfo/libav-user > > To unsubscribe, visit link above, or email > [email protected] with subject "unsubscribe". >
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