Video to Audio Converter Factory Pro is a professional and powerful program.The professional Video to Audio Converter Factory Pro can easily convert AVI video to MP3 as AVI to MP3 converter, convert WMV to MP3 as WMV to MP3 converter. With it, you can easily get MP3, WMA, WAV, M4A, AAC, AC3, OGG, MKA, AU,etc. audio from video AVI, MPEG, WMV, MP4, MPEG-4 AVC, RM, MOV, etc. The video to audio converter supports batch conversion, thus you can process multi-conversion at the same time and set many output audio formats for one video to convert. What's more, you can freely change audio parameters to output when convert video to audio. Video to Audio Converter Factory Pro can auto-detect your CPU and take full advantage of your multi-core CPU to reach the highest conversion speed. Extract audio, capture pictures from video, merge and clip video ,fast speed and high quality make you enjoy yourself. * Convert AVI to MP3, WMV to MP3 with excellent quality *Convert most video formats to popular audio formats * Multi-core CPU supporting *Run in background and after done actions