I can’t seem to get the output mov files from draft to look correct when the input colorspace is log10 cineon dpx. I’m curious if draft can correctly convert from log10? When it’s rendered, it looks as if the dpx frames were read in as raw without any sort of log -> linear conversion. I’ve gone through all luts listed on thinkboxsoftware.com/draft-b … transform/. I’m told that sRGB or Rec709 (assuming full-range) should work for the conversion, only assuming that Draft can convert from log10. Some guidance would be helpful.
cineonLut = Draft.LUT.CreateCineon()
inverseCineonLut = cineonLut.Inverse()
inverseCineonLut.Apply( image )
If that doesn’t work, send me a sample image plus what you expect it to look like, and I’ll see if I can figure it out. (I’m still fairly new to colorspaces.)
Yes, I’m currently inversing the Cineon and then applying sRGB (for mov h264 100% quality output) and adjusting the gamma since QuickTime does 1.8 gamma by default which /kinda/ gets us in the ballpark, but definitely not accurate. I’ll see if I can send out a sample image. If this can’t be achieved with Draft then I’m thinking a post Nuke job to generate the media will do the trick.
I understand that your input is a Cineon DPX, and your output is a QuickTime movie. What are you comparing the QuickTime movie with, to determine whether it’s accurate?
I assume you have some kind of reference image. Where does the reference image come from? What are you using to view it? We need to figure out what LUTs are applied to your reference image, so we can match it in Draft.
If you can send us a sample image, it would be helpful if you could please send us both the Cineon DPX file that you’re loading into Draft, and the reference image that you’re comparing with the output QuickTime movie.