Unable to open .mp4 UHD Resolution

[Alan Player]

I have a number of video files in .mp4 with UHD resolution (3840 x 2160). When attempting to open these files with Subler to import the meta data for this TV shows / Movies, Subler gives this message in the attached image - all files give this message

[Damiano Galassi]

Do you have a small sample I can use to reproduce the issue?

[Alan Player]

Currently attaching a small sample recorded on my iPhone - same issue occurs on 4K TV episodes,

[Alan Player]

Small sample of 4K video

[Damiano Galassi]

That's a mov file, not a mp4 one. You should rename it to .mov .

[Alan Player]

I have converted the .mov to .mp4 using the same program I have been using to convert all video formats to .mp4

[Damiano Galassi]

Then the program you used is lying, because it's actually a mov file.

[Alan Player]

I use the same program to convert .mkv to MP4. I'm at work now so will have to wait till morning to send a converted .mp4 the only other ones I have are full length TV eps about 5gb

[Alan Player]

I am uploading a shortened clip of 8 minutes converted from MKV to MP4 4K to this this drop box link. It may be a number of hours before its uploaded. We have crappy internet speeds here in Australia lol https://www.dropbox.com/sh/wceuz71obx0a9wr/AADgGdk56QOW6_byITm3JTtya?dl=0

[Damiano Galassi]

Still a mov file, not a mp4. Either check the settings in the app you are using to convert it, or use HandBrake that is known to work.