I'm currently offering a free and paid version of a small project I been working on. I been trying various tube importers and they are either overly expensive or require custom themes which ruin my entire website.
Also I don't know any that drip feed, instead they depend on cron jobs.
The plugin support 4 websites so far, Xtube,Xvideos, Literotica and raremovietube.com.
I found importing videos from lesser known sites such as raremovietube.com and Literotica help greatly with SEO as the content is less saturated.
The plugin is very simple to use and supports WordAI + SpinnerChief these are two paid services and if you are cheap like me you can use the built in spinner(Not great) or just jumble up words randomly.
You can get the free open source version here:
PirrTaste Auto tube Importer version 0.4 | Lines go up
I have a paid version which includes Code clean up , Word Filters , and any tube site of your choice for just $5.
The free version is license under GNU so feel free too make changes