Free MP4 MP3 Converter

MP4 MP3 Converter is a powerful audio extractor extracting audio from video. It allows extracting MPEG-4 Part 10 (H.264/MPEG-4 AVC), MPEG-4 Part 2 video to MP3 easily. Key features: Batch-convert unlimited video files in the fast and easy setup interface; Extractor Video files into custom file sizes for use with portable MP3 players; You can customize the size of output file and its Bitrate will be calculated automatically; Multithreading are supported and the more files you convert the faster; Converting in batches, convert multiple files at one time; Easy to use - Just two clicks, everyone can become the master of Free MP4 MP3 Converter; Automatically shutdown the computer after conversion; Many settings are adjustable, such as audio size, bit rate, frame rate, so that the output MP3 audio will match most portable MP3 player.