Ok finally after a month I've worked it out how to Export iPhone 12 Dolby Vision HDR projects in Premiere Pro and to save anymore tears for all of us 😂 1: Import your iPhone footage into Premiere Pro I'm currently using version 14.5 which you will need. 2: Set your sequence to match frame size, frame rate etc but the main thing we need to do is change "Working Color Space" to Rec 2100 HLG. iPhone Dolby Vision colour space is Rec 2020 HLG but this will work for now until they update Premiere. 3: Make sure when you color grade set your scopes to HDR and color space to Rec 2100 HLG. 4: Ok this is where I lost my mind for the last month but finally worked it out. For Export choose MXF OP1a Format Video Codec: XAVC QFHD Intra Class 300 Next go to HDR Graphics White (Nits) make sure this is 203 (75% HLG) which is standard. Tick Render at maximum depth, Enable Smart Rendering Codec, Hybrid Log Gamma, Use Maximum Render Quality. If your wanting to upload to YouTube or for a client this is the best and only option I've found that works with Premiere. I hope I've saved everyone from this headache.
When I try this, it comes out too red. It looks perfect in Premiere, in the preview and also if I import the mastered file back into Premiere. But if I export as a quicktime or if I upload the mxf file to YouTube, it comes out with over saturated red tones