Wan Yin - Free ringtone making let the audio extraction become accessible Allows you to extract audio from a variety of videos Make the extraction operation easier than ever In addition, the converted audio can be sent to your mobile phone, WeChat, QQ and other applications - supports audio production of ringtones - supports various video types - supports mp3, aac, wav and other formats - supports audio interception range - supports audio volume adjustment - supports audio speed adjustment - supports mono and stereo switching - supports audio sampling rate adjustment - supports audio bit rate adjustment If you have any other comments or Suggestions or functions you need, please email me E-mail: 471941655 @qq.com