Android studio merge 2 mp4 clips app FFmpeg MP4parser

$10.00 – 30.00 USDBIDDING ENDS IN 6 DAYS, 23 HOURS I've been searching on GitHub I have had no luck. Looking for source code for Android to combine 2 mp4 clips. Tried FFmpeg, MP4parser, etc with no luck. I keep getting error messages. Have to use a command line interface. I've been testing GitHub and no real solution. Need some assistance or a basic Android app source code that works to merge 2 mp4 clips as a single mp4 file. I use these 2 command but it fails to merge. FFmpeg is compiled correctly because it works on basic commands to convert. But merge I just can't get it to work ffmpeg -i [login to view URL] -i [login to view URL] -t 0.1 -f lavfi -i anullsrc -filter_complex "[0:v] [0:a] [1:v] [2:a] concat=n=2:v=1:a=1 [v] [a]" -map "[v]" -map "[a]" [login to view URL] -i [login to view URL] -i [login to view URL] -filter_complex [0:v:0][0:a:0][1:v:0][1:a:0]concat=n=2:v=1:a=1[outv][outa] -map [outv] -map [outa] [login to view URL]