Up until recently (about 3 months ago), ALL open flash videos had deleted file handles in the procfs virtual folder for the flash plugin, I could see them thus:

ps x|grep flash
cd /proc/#PROCESS#/fd
ls -l

cp #FILE# ~/

This still works for the vast majority of flash video, but some YouTube videos no longer keep this open file handle.

My questions are:

A) Why not? B) Where are these files now stored? C) How can I get this file

Yes I know I could probably get a browser plugin, it just annoys me that they are hiding these files so I want to keep doing it the hard way.