Getting error when running this command in ffscreencast after hombrew installation. What to do?

[Shyamal Suhana Chandra]

Available devices:
[1] Capture screen 0	
[2] Capture screen 1	
Enter device number: 2
/usr/local/bin/ffmpeg -hide_banner -loglevel info -thread_queue_size 512 -f avfoundation  -i "2" -thread_queue_size 512 -f avfoundation -video_size 160x120 -framerate   -i "0" -c:v libx264 -crf 0 -preset ultrafast -filter_complex 'overlay=main_w-overlay_w-10:main_h-overlay_h-10' -threads 0 "/Users/shyamalchandra/Desktop/Screencast 2018-09-26 at 05.18.17.mkv"
[avfoundation @ 0x7fec75001200] Selected pixel format (yuv420p) is not supported by the input device.
[avfoundation @ 0x7fec75001200] Supported pixel formats:
[avfoundation @ 0x7fec75001200]   uyvy422
[avfoundation @ 0x7fec75001200]   yuyv422
[avfoundation @ 0x7fec75001200]   nv12
[avfoundation @ 0x7fec75001200]   0rgb
[avfoundation @ 0x7fec75001200]   bgr0
[avfoundation @ 0x7fec75001200] Overriding selected pixel format to use uyvy422 instead.
[avfoundation @ 0x7fec75001200] Stream #0: not enough frames to estimate rate; consider increasing probesize
Input #0, avfoundation, from '2':
  Duration: N/A, start: 12584.266167, bitrate: N/A
    Stream #0:0: Video: rawvideo (UYVY / 0x59565955), uyvy422, 3840x2160, 1000k tbr, 1000k tbn, 1000k tbc
Cannot find a matching stream for unlabeled input pad 1 on filter Parsed_overlay_0