A free program for Android, by Highdea Apps Studio.
All Video Converter – mp3, mp4 is a free app that allows you to convert almost every video format available to any other format. Converting video with this program is fast and very easy to use. Its interface is user-friendly and has a catchy eye design for you to have an amazing user experience. It supports many video formats including MP4, FLV, MPEG-1,2, MOV, MKV, WMV, AVI, VOB, 3GP, SWF, MP3, AAC, WAV, and more. MPEG-4, H.264, MPEG-1, MPEG-2, MS-Mpeg-v2, MS-Mpeg-v1, THEORA, VP9, and FLV are the video coded supported.
With this app, you can also change the video size and aspect ratio depending on your preference. You don’t have to worry if you accidentally delete the saved file on your phone because edited files are automatically saved within the app.