Key features and functions:

1. Convert video formats like MP4, MOV, M4V, MTS, M2TS, MXF, MOD, AVI, WMV, FLV, MKV, DivX, Xvid, MPEG, SWF and more in blazing fast speed and exactly original video image quality.

2. It enables you to convert almost all audio files like MP3, M4A, MP2, FLAC, AC3, WMA, MKA, WAV, AAC, AIFF, ALAC, etc. to your needed formats.

3. Convert video to MP4/AVI/MOV for better playback on your portable iOS device, such as iPhone 7 Plus/7/6s Plus/6s/SE/6 Plus/6/5s/5c/5/4S, iPad Pro/Air 2/mini4, iPod touch 6/5 and more.

4. You're allowed to adjust encoder, frame rate, resolution, aspect ratio and video bitrate. In addition, the audio settings like encoder, sample rate, channels and audio bitrate are adjustable at your disposal. 

5. It helps you cut off any time-length video clips from your source video and audio file.

6. Cut off the unwanted black edges and adjust aspect ratio to get the perfect video play region for your player.

7. Select the fittest output format, audio track and subtitle for your video. You can also choose the video without subtitle.

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***** Yes, it works with macOS Sierra!