You can rip/save/record/capture/download http:// .flv flash videos using different stream recorders including Replay Media Catcher (RMC) and Bit Recorder. You can even download it using your browser.

See the following FAQ for more:
How to record/download/capture/save Macromedia/Adobe Flash .FLV video HTTP stream from embedded player



FREE xxx/Adult Video Sites:How to record/download/capture Youporn/Pornhub/xTube videos (video tutorial)




How to download adult/sex/porn stream from YouPorn with Replay Media Catcher (tutorial)