Did you stop / restart your Mezzmo server service ? The server reads the devices profiles upon start.
Jeff
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For any photos that you have already viewed you will need to delete transcoded files. From 'Media Devices' double-click the device then click on the Transcoding tab and click the button to delete transcoded files. Photos you have not viewed before should be rotated if the photos contain rotation information in the metadata of the image.
1) Mezzmo media server was stopped then restarted. 2) The same photos, only a few, remain in the wrong orientation with both the Mezzmo Roku application and Mezzmo through Roku Media Player. 3) These photos, when viewed on my PC using the Windows 10 Photo app and Windows Media Player, are in the proper orientation. 4) These photos were all taken using Iphone-12.
It is possible that the rotation in the image is not being read, Mezzmo uses the EXIF information in the image to rotate it and if the iPhone12 encodes this differently then Mezzmo may not be able to rotate the image.
1) The pictures were taken on the Iphone-12, then downloaded to an external drive attached to my PC.
2) Different, more recent photos currently on the Iphone-12 have EXIF data visible under the Info button (small case 'i' in a circle). I do not know EXIF data might pertain to orientation.
3) I believe the Iphone-12 EXIF data (metadata?) appears under Properties for photos viewed through File Explorer, or File Info for photos viewed through the W10 Photo app. Again I do not know EXIF data might pertain to orientation. Or if some Iphone-12 EXIF data is lost, changed or becomes unreadable on my PC.