I have an iPhone 6 of 120 GB, iOS 9.3.1, and I want to know how to transfer videos that are on one's PC to my iPhone, without using any 3rd party extension. It's fine to use an iTunes method, I just am looking for some answers (because the internet doesn't like being recent and also likes 3rd party apps).
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How to transfer computer videos to the iPhone 6 photo library?