and more sites began to use rtmp protocol to play flash video,
so you need Flv Recorder.
Flv Recorder - the best Flv video grabber
that can save/download/capture/grab/record flv video and audio
streaming through HTTP and RTMP protocol.
have a excellent build-in Free Flv Player and help you watch
flv videos, and it is pretty and easy to use.
You can record from lots of popular places, including:
More Detail: www.FlvRecorder.com