App: Media Converter Plus
Developer: 春生 熊
Genres: Photo & Video

"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

Release notes:
Progress display during optimization