use youtube downloader or keepvid.
I've been using keepvid for a very very long time, with 100% success.. Just REMEMBER to download the video in mp4 (highest quality). Youtube doesn't seem to accept flv files.. (even though when you download a video from youtube you get it in flv..)
So basicly, use keepvid, download in mp4 format, and reupload.. Simple..
Uploading FLVs works fine for me. I just use FLVDirect (the loudmo software lol, I uninstalled the adware that comes with it) to download with.
if you add in the proxy support,multi accounts it would be daa bomb programWell with Tube Detonator it lets you do many videos at once. Also, with this next release it will let you watermark the video and a number of other things.
Garret