If you have a large number of videos that need to be converted, it might be helpful to have a specialised app on your mobile device that is designed specifically for video conversion. TubeMate is only one example of the many apps available on the market that are capable of fulfilling this function. On the other hand, given that TubeMate is only accessible to users of Android devices, owners of iOS devices have the option of downloading the MyMp3 video conversion software.
To convert the videos online for free, visit Youtube to MP3 Converter.