On Sun, May 8, 2022 at 9:28 PM Mahesh Pittala <mah...@multicorewareinc.com> wrote:
> Hello, > > I am trying to convert HLG to SDR using 3D LUT cubes freely distributed by > NBCUniversal. (3-NBCU_HLG2SDR_DL_v1.1.cube > < > https://github.com/digitaltvguy/NBCU-HDR-SDR-Single-Stream_Workflow_Recommendation/blob/main/LUTS_for_Hardware_Devices/3-NBCU_HLG2SDR_DL_v1.1.cube > > > ) > > https://github.com/digitaltvguy/NBCU-HDR-SDR-Single-Stream_Workflow_Recommendation/tree/main/LUTS_for_Hardware_Devices > > It seems the LUT conversion appears to be a modified “Type 1” which is > mapping absolute signal peak to narrow range (10bit code value 940). This > value should allow code values all the way up to 1019 > > Does ffmpeg's lut3d implementation support type 3 ? > cube lut3d specification says nothing about type 3, whatever type and 3 means in this context. > > My CLI: > ./ffmpeg -i Input_hlg_422_10bit.mov -vcodec v210 -vf > "lut3d=interp=tetrahedral:file= 3-NBCU_HLG2SDR_DL_v1.1.cube > < > https://github.com/digitaltvguy/NBCU-HDR-SDR-Single-Stream_Workflow_Recommendation/blob/main/LUTS_for_Hardware_Devices/3-NBCU_HLG2SDR_DL_v1.1.cube > > > " -an output_SDR_422.mov > > Thanks, > Mahesh > _______________________________________________ > ffmpeg-user mailing list > ffmpeg-user@ffmpeg.org > https://ffmpeg.org/mailman/listinfo/ffmpeg-user > > To unsubscribe, visit link above, or email > ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe". > _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
