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 ? 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 [email protected] https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
