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  • I am in the proper directory when running these commands. When running the first block line by line the last line starting with mv throws the operation not permitted command. That said, I do get a file-for-ffmpeg at the Finder window. When I manually add .txt to the end of it I can open and see the document contains the text file 'file*mp4' Commented Oct 13, 2021 at 16:18
  • Using cp instead of mv prevents the error from being thrown but the txt file still just reads file 'file*mp4' Commented Oct 13, 2021 at 18:09
  • When I run cd /directory/with/videofiles rm -f /tmp/t for f in file *.MP4; do echo "file '$f'" >> /tmp/t done cp /tmp/t ./file-for-ffmpeg.txt I do get a .txt file with my list of files but the first line of the txt file reads file 'file' How would I get rid of that? Commented Oct 13, 2021 at 18:17
  • When I run cd /directory/with/videofiles rm -f /tmp/t for f in file*.MP4; do echo "file '$f'" >> /tmp/t done cp /tmp/t ./file-for-ffmpeg.txt I get a .txt file whose only content reads file 'file*.MP4' Commented Oct 13, 2021 at 19:35
  • If the files have lowercase extensions (i.e. .mp4, not .MP4), then you need to use lowercase in the pattern: for f in file*.mp4. If there's a mix of upper- and lower-case extensions, then use for f in file*.[mM][pP]4 to match both. Commented Oct 15, 2021 at 9:17