App: Smart MP3 Converter
Developer: 育平 姚
Genres: Music, Utilities

Smart MP3 Converter is a mp3 converter app. It supports almost all input formats. You can converter video and music to mp3. You can extract audio from video. It supported audio editor.

Supported more than 100 input formats: mpg, mpeg, mpeg 2, vob, voc, dat, mp4, m4v, ts, rm, rmvb, wmv, asf, mkv, avi, 3gp, 3g2, mp3, mpc, m4a, wav, flv, f4v, mov, h264/x264, 1080p/720p HD, avr etc

Batch Conversion
• You can convert a lot of files at one time
• You can add a file or remove a file

Audio Edit
• Support trim the audio
• It can make some audio files to be one
• You can add a new audio to the audio
• You can remove the added audio
• You can adjust the play speed
• Support undo and redo
• Support history edit view
• You can use it to play the audio

Audio Play
• Support play your music

Get Audio Information
• Get information include: format, file size, duration, overall bit rate, album, track name, bit rate, channel(s), sampling rate, language etc

Track Information Editing
• You can edit title, artist, album, genre, date, track, language,comment, etc

Advanced Settings
• You can set the sampling rate, channels
• You can select the codec: copy or mp3
• You can change the volume
• You can set how many threads to converted the file
• You can set the start time and the duration to trim the music

Update to ffmpeg 2.4

Support Retina

Release notes:
support macOS Big Sur (os11.0)