No don't upload from YouTube, or else if they shut down your channel for arbitrary reasons, or if they go bust one day, you will end up with dead links on your DTube channel.

She is using @onelovedtube uploader that I built, which uploads videos directly to the IPFS network that actually caches on public gateways. The videos will remain playable indefinitely as other nodes in the network can pick up the file easily and pin them onto the nodes.