What is the required audio file format? Last updated Save as PDF Share Share Tweet Share Loading...8x8 Support impacted by local COVID-19 measures. Please create a case online for the best help.Recently upgraded to 8x8 Video Meetings? Click here!Some US Landline Participants get a Busy Signal in 8x8 Video MeetingsPrevNext Applies To 8x8 Contact Center Answer An 8 kHz, 16-bit, monaural WAV file. Additional Information WAV files cannot exceed 30 megabytes.