Bash script does not continue to read the next line of file

Question

I have a shell script that saves the output of a command that is executed to a CSV file. It reads the command it has to execute from a shell script which is in this format:

Answer 1

ffmpeg reads STDIN and exhausts it. The solution is to call ffmpeg with:

 ffmpeg 

See the detailed explanation here: http://mywiki.wooledge.org/BashFAQ/089