Transcode oneplus3 4k video to DNXHR format compatible with davinci resolve 16

transcode.sh

#!/bin/bash
# if an argument is supplied, use that as the filename
if test ! -z "$1" 
  then
    ffmpeg -i ${1} -c:v dnxhd -profile:v dnxhr_hq -pix_fmt yuv420p -c:a pcm_s16le ${1}.mov
  # else, get all the MP4s
  else
    for f in *.MP4
      do
       ffmpeg -i ${f} -c:v dnxhd -profile:v dnxhr_hq -pix_fmt yuv420p -c:a pcm_s16le ${f}.mov
      done
fi