Hi Gabby
We would love to help with your Cloud questions.I use this all the time and I'm so happy to address any issues. No videos that are on the cloud are not effected when deleting them from the phone. Please check out our FAQ's about our Cloud service here: http://www.verizonwireless.com/support/verizon-cloud-faqs/?task=cloud
JoeL_VZW
Follow us on Twitter @VZWSupport
If my response answered your question please click the �Correct Answer� button under my response. This ensures others can benefit from our conversation. Thanks in advance for your help with this!!