Jupyter notebook, ffmpeg, shell commands

Extract Audio from Movie File

ffmpeg -i input-video.avi -vn -acodec copy output-audio.aac

ffmpeg -i input.mp4 -vn -acodec pcm_s16le -ar 44100 -ac 2 output.wav

## Execute Shell Commands from Jupyter Notebook

`%%cmd

``<enter shell command to execute>

or

``!<enter command>

`for moviefile in os.listdir("./"):`

    `if moviefile.endswith(".mp4"):`

        `inputfile = moviefile`

        `outputfile = moviefile + ".aac"`

        `if os.listdirtdir command = 'ffmpeg -i ' + inputfile + ' -vn -acodec copy ' + outputfile`

        `!{command}`

## Using macOS Find and dot_clean

`find . -name ".DS_Store" -type f -print

`find . -name ".DS_Store" -type f -delete

`find . -name "*.DS_Store" -delete

`find . -type d -empty -print

`find . -type d -empty -delete

`find . -mindepth 2 -maxdepth 2 -type d -print

`find . -mindepth 2 -maxdepth 2 -type d -exec echo mv {} . \;

`find . -name ".DS_Store" -type f -delete && find . -type d -empty -delete

### Find All Files that Don't Have One of a Set of Extensions

`find . -type f -print | grep -vE "\.(jpg|png)$"

## Update All Photos' Date Created and Modified to Date Taken

`exiftool "-filemodifydate<datetimeoriginal" "-filecreatedate<datetimeoriginal" [David Bray](../People/David%20Bray.md)

Organize Photos into Year / Month Folders

1. Download Organize: https://[GitHub](../Organizations/GitHub.md).com/tfeldmann/organize

rules:

  - locations: ~/Pictures

  filters:

  - extension:

    - .jpg

    - .raf

  - exif

  actions:

    - move: ~/Pictures/Sorted/{exif.exif.datetimeoriginal.year}/{exif.exif.datetimeoriginal.month}/

Generate a List of Sequential URLs and Automatically Copy Them to the MacOS Clipboard

echo <https://www.example.com/file->{001..010}.html | pbcopy