Step 1. Add SWF video(s) to the software
Refer to the interface as follows, click the icon "Add Video" to add FLV to the program. Wow, I nearly forgot, tell you a secret, you can directly drag and drop file(s) to the program.

Step 2. Select output format
Since this article is about how to convert Flash SWF to AVI, then you should click Format icon to select AVI as output format. As well as, you can select output format according to your device. What's more, click the advanced icon next to the format icon for more settings, it is optional.
Step 3. Start to conver SWF file to AVI
The Start button is at the bottom of interface, just click it, but you have to at least finish all settings. Wish you everthing is OK!
Now you can play the converted videos on your Android phone, iPhone, or other cell phones. By the way, the free download icon aways applys for you.

Read more: How to Convert Videos to MP4, Convert AVI to MOV Mac