G60828.mp4 -

I can then give you more specific advice on how to build your feature! Writing an MP4 Muxer for Fun and Profit - OBS Studio

: It supports Advanced Audio Coding (AAC) , which provides better sound quality than MP3 at the same bit rate. g60828.mp4

: If you can't open it, try the VLC Media Player , which can handle almost any codec used inside an MP4. I can then give you more specific advice