The video doesn't play on mobile

Hi. I made my first video and it doesn’t play on my mobile.
I used this for the background.
The size of the final video is 1080x1920.

These are the properties of my Write
natron

I’m using Natron version 2.3.14 Release on Windows 10
The final video works fine on my laptop and on Google Drive but not on my mobile.
The original video works fine everywhere.

What is the problem? What do you think?
Thank you.


Sample:

Plays fine in mobile Firefox!

If the video doesn’t play on your mobile device, it’s probably because the codec you selected in the write node properties is not compatible with your mobile device.
If you get an error while playing the video on your mobile device like “Video cannot be played because the format is not supported”, then try using a different format and/or codec. Do some research and check which codecs are supported by your mobile device or which codecs are most common in mobile devices, which usually happen to be H.263 for 3GP and H.264 for MPEG4.