I have exported my video and once I have uploaded it on youtube the outcome looks nice on all the necessary devices except on Iphone.
The youtube version looks really awful on Iphone it is hollow.
First I thought it could be a harmonisation problem with youtube, but It is so strange in due to the same youtube version looks great on my Imac.
My settings are:
HD 1080p. mp4 23,976fps
The output and the sources matches (1920-1080, 23.976 progressive)
I have used maximum render quality, I have rendered at maximum depth, Profile setup is on high with 4.2 level, Aspect: Square pixels, I have used VBR 2 pass the target bitrate 15Mbps, maximum bitrate 25Mbps. (I have tried with 9-15)
I would be really grateful if you would have any idea what caused the bad quality of my video on Iphone?
Some carriers automatically enroll you in watching lower quality video on your phone (T-mobile Binge-On for example). Is that what's happening? Would you mind sharing a link to view the video? I understand if not.