html5 - How to merge audio and video file in android -

thanks great mp4parser lib, have few queries related audio video muxing.

we used below code in android , tried, not getting expected output, have kept working mp4 file in specific directory , trying no luck.

here merged audio , video, audio gets appended video. , appended audio not play increases width of video.

any geeks.

here code,

    file sdcard = environment.getdatadirectory();      string videofilepath = environment.getexternalstoragedirectory().tostring()+"/video.mp4";     string audiofilepath = environment.getexternalstoragedirectory().tostring()+"/audio.aac";     file file=new file(videofilepath);      h264trackimpl h264track = new h264trackimpl(new filedatasourceimpl(videofilepath));     aactrackimpl aactrack = new aactrackimpl(new filedatasourceimpl(audiofilepath));      movie movie = new movie();     movie.addtrack(h264track);     movie.addtrack(aactrack);       container mp4file = new defaultmp4builder().build(movie);      filechannel fc = new fileoutputstream(new file(environment.getexternalstoragedirectory().tostring() + "/video.mp4")).getchannel();     mp4file.writecontainer(fc);     fc.close(); 

it seems problem output file name input. try change name of output file.

filechannel fc = new fileoutputstream(new file(environment.getexternalstoragedirectory().tostring() + "/video_out.mp4")).getchannel();