Every time after my flight is done I copy the footage from the SD card to my windows PC. Then I use itunes and sync the footage to my 6s+ to check it out. On the phone the quality/ clarity looks amazing. Whenever I play the same unedited footage on my other windows desktop the footage doesn’t look crisp and loses some quality. It almost looks like a low 720p instead of 1080. Why is that? Is it because of the desktops screen size which makes the footage more expanded? Will it look even worse on a bigger screen like a tv? This is starting to scare me because I have some great footage that id like to edit and post but this problem is holding me back. Idk how everybody else does it cause there’s looks crystal clear no matter where I view it whether on my phone or a big desktop monitor. Someone please help me understand this.  

Thanks!

Sir, please post the original video for further check. Or you can upload it to dropbox for further check. Thanks for your help.