Step 1: Free Download AVI to FLV Converter
Step 2: Launch the AVI to FLV Converter, and Step 3: Click "add" button to input MPG/MP4/AVI video files to be convertered.

Step 4:In the output Format choose FLash Video Format(*.FLV).
Step 5: Click "convert" button.
the process shall be looked like this:

After successful converting AVI to FLV , the converted FLV files shall be stored in the folder you have previously selected .
Note: Converting AVI to FLV is just part function of Emicsoft FLV Converter which is distributed by Emicsoft Studio.
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