If you want to provide streaming video service (For example, seeking any position in the video file) using Flash video, you need to embed Metadata in your flv data file.
The most well-known free tool is ‘flvtool2’ which was created by Norman Timmler (http://www.inlet-media.de/flvtool2) .
It’s pretty easy to use. You just have to type the command with -U option 'flvtool2 -U sample.flv' in the Windows command console.
However, if you have multiple FLV files to work on, this can be rather boring repetitive work. Yes, you may create a batch file and execute them all at once, but still the task requires too much manual typing.
So I decided to create a simple front GUI frontend to embed Metadata for the multiple flv data with few clicks. And, here is my SarahFlvtool2. It is a Windows GUI helper for flvtool2.