https://forum.blackmagicdesign.com/viewtopic.php?f=21&t=212751 May be whole thing is really not supported onWindows (!) in Free version, but there was workaround posted that may be fix it for HEVC (x265) encoded files: ==== Yes, try DNxHR which should be flagged properly and YT should detect HDR nature of the file. You can "fix" those files with ffmpeg: Code: Select all <https://forum.blackmagicdesign.com/viewtopic.php?f=21&t=212751#>fmpeg.exe -i C:\TestAsHDR.mp4 -bsf:v hevc_metadata=transfer_characteristics=16:colour_primaries=9:matrix_coefficients=9 -c copy -movflags +write_colr C:\out.mov This will add PQ flagging to your file. Other solution is exporting to eg. DNxHR and encoding to h265 though 3rd party- ffmpeg, etc. ==== interesting to note that even just 6 month ago whole HDR situation was ... still a bit of mess ;)