"Functions and Features" ● No ads, no long-term subscription fees, no in-app purchases, pure version, please rest assured to buy ● Support batch extraction of sound from video (lossless) ● Support batch conversion ● Support conversion output mp3 wma wav aac ac3 adx caf mp2 flac aiff au caf m4a wv ● Support input various audio and video formats ● Support sound speed adjustment ● Support volume amplification ● Support sound quality adjustment ● Supports merging of multiple files
