I have an IPhone 6s and I've exported a 32 sec. 4K video from Mavic to the DJI Go4 album using the app.
How did I get 4K video onto my iPhone Camera Roll?
There seems to be 2 ways to export the video to camera roll but neither method works.
1. Open the video and then click the export icon to save to camera roll. This doesn't work and I get an error message ( see below)

2. Open the album and select the video, click Manage and then export to iOS Camera Roll but I also get an error message. (See below)

Any suggestions or links to resources would be greatly appreciated.
How did I get 4K video onto my iPhone Camera Roll?
There seems to be 2 ways to export the video to camera roll but neither method works.
1. Open the video and then click the export icon to save to camera roll. This doesn't work and I get an error message ( see below)

2. Open the album and select the video, click Manage and then export to iOS Camera Roll but I also get an error message. (See below)

Any suggestions or links to resources would be greatly appreciated.
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