I'm trying two different playback strategies to play HDR10 videos on iPhone: A:Use VideoToolBox to decode the video, and then hand it over to AVSampleBufferDisplayLayer on the screen B:Use AVPlayer player I found this tow has the same effect Then I copied a HDR10 video and deleted its static metadata, named it HDR10-No-Static-Metadata, then handed it to player A, and handed the original video to player B , compared the two effects, and found that they were still the same. Does this mean that iOS is not referencing static metadata when playing HDR10 video？ Any help would be appreciated.