Issues with Iphone footage in premiere

Hi,

I am having problems with some footage that was recorded on an iphone and saved as a mov. file. It has horizontal lines which I thought at first was an interlacing problem but was not solved by De-interlacing in the field options. 

I have tried re exporting from Quicktime as an mp4. I tried with HEVC checked and unchecked. Still the same lines.

I tried renaming the original file.

I have now downloaded Handbreak and have tried various options but as I'm not really sure what the problem is I'm a bit stuck. Would anybody have any advice please??

I don't want to have to ask to get the clip refilmed!