create video with image and lenght using ffmpeg linux terminal

ffmpeg_command

 ffmpeg -s 720x576 -r 25 -loop 1 -y -i /root/anon.jpg -t 02:00:00 -acodec libfaac -ac 2 -ar 44100 -ab 128k -async 1 -vcodec libx264 -level 1.3 anon.mp4
 
 if you want to add audio, add -i (audio file location)
 
#include <bitset>
#include <string>
#include <iostream>
#include <sstream>

using namespace std;

int main(int argc, char **argv)
{
        if (argc < 5)
        {
                std::cout << "Usage is --imagelocation </root/anon.jpg> --videoresolution <240p | 360p | 480p | 720p | 1080p | 1440p | 2160p> --videoduration <10s 20s 30s 1m 2m 3m 1h 2h 3h> --videooutput </root/anon.mp4> --audiolocation </root/anon.mp3> \n"; // Inform the user of how to use the program
                std::cin.get();
                return 0;
        }else{

        }
}