Hi,
I've noticed that uploading video via 'New Post' --> 'Template for Videos' on mobile phones has a couple of issues. First, when you select the video to upload via 'Upload File' you get a blank screen and a message 'No compatible software was found for this'. But when you submit for approval, the video gets published.
Other users have mentioned not being able to see the uploading progress counter as well and when they publish the video it takes some minutes after for it to be playable. I was only able to replicate this problem once however.
Please find attached screenshot.
Regards,
Sam