It's a FLV fixer and FLV metadata injector. It will replace any existing "duration" data with the correct data and repair the FLV video files that are unseekable.
You can launch Repair FLV Files in GetFLV. Within 3 steps, you can convert FLV videos for yourself.
Step 1: Launch
Repair FLV Files
Step 2: Add FLV files
Click on the "Add File(s)" button. You are given a standard file-open dialog. Add the file you want to convert. You may choose multiple files in this dialog.
Step 3: Repair FLV files
Click on the "Repair" button on the tool bar to start converting.
Quickly repair FLV
Step 1: Select FLV files from the FLV Downloader.
Step 2: Select the "Repair FLV Files" item from the context menu to repair selected FLV files.