android - How to mux audio file and video file?

Question

i have a 3gp file that is recorded from the microphone and a mp4 video file. i want to mux audio file and video file in to a mp4 file and save it. i searched a lot but didn\

Answer 1

What you'll need to get working in ffmpeg. Here's a link to help with that:

FFmpeg on Android

ffmpeg requires the NDK on Android.

Once you have that working, you can work on muxing the audio and video together using ffmpeg. Here's a link to a question that does it with 2 video files (the answer should be similar).

FFMPEG mux video and audio (from another video) - mapping issue