Pavtube FLV/F4V Converter 

This program is designed to help Mac users convert FLV and F4V files to various multimedia formats. The application brings a user-friendly interface, works with a wide variety of output formats, offers high-quality results, and supports batch processing.

You can work with this conversion utility whenever you deal with incompatibility issues between your Flash videos and the media players you're using. The app also comes in handy when you wish to convert a large number of FLV files to a certain format and merge the videos into a single file.

Pavtube FLV-F4V Converter brings an integrated video editor which might prove to be of good use if you need to apply a watermark to the input files, change their resolution, attach subtitles, and many other.

The only aspect I don't like about this tool is that it doesn't let you choose the individual output profiles when batch processing.

To sum things up, Pavtube FLV-F4V Converter proves to be a reliable solution when it comes to converting FLV and F4V files to other media formats. You can choose from various output profiles, edit the input files to match your needs, and get the results you require with just a few clicks.