shaky videos

Hello bujargjyli,

Getting the image quality expected from your iPhone when shooting videos is essential, and you've come to the right place for help. 

While the title of the following article references a different issue, the steps found within it can potentially help.

If the camera or flash on your iPhone, iPad, or iPod touch isn't working

If you continue to have issues after those steps, can you tell us if the problem happens with all videos you shoot or just those three you posted to YouTube?

Also, please keep in mind that exposing your iPhone to high amplitude vibrations within specific frequency ranges, specifically those generated by high-power motorcycle engines, can degrade the camera system's performance. To learn more about this, check out the link below.

Exposure to vibrations, like those generated by high-powered motorcycle engines, might impact iPhone cameras

 Thanks for using the Apple Support Communities.

Cheers!

Hey there bujargjyli!

If you're still having issues, please reach out to Apple Support for assistance:

Contact Apple for support and service - Apple Support

Regards.