Gifme your videos

gifme.sh

#!/usr/bin/env bash
# save this file on your local machine as 'gifme.sh' (or file name of your choice)
# run the following command wherever you saved this file:
# bash gifme.sh

# Check for Homebrew, install if we don't have it
echo "Installing Homebrew........"
if test ! $(which brew); then
    echo "Installing homebrew..."
    ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
fi

echo "Updating Homebrew........"
# Update homebrew recipes
brew update
brew install gifsicle

if test ! $(which ffmpeg); then
    echo "Installing ffmpeg........"
    # install ffmpeg
    brew install ffmpeg
else
    echo "ffmpeg already installed........"
fi

if ! type gifme &>/dev/null; then

    # set env file to use to insert function
    if test -e ~/.bash_profile
    then
        ENVFILETYPE=~/.bash_profile
    elif test -e ~/.bashrc
    then
        ENVFILETYPE=~/.bashrc
    elif test -e ~/.zshrc
    then
        ENVFILETYPE=~/.zshrc
    else
        echo 'no profile found'
    fi

    echo "adding gifme to your env file........"
    echo '
# define gifme
# make gif file out of .mov file
# Notes on the arguments:
# -r 10 tells ffmpeg to reduce the frame rate from 25 fps to 10
# -s 600x400 tells ffmpeg the max-width and max-height
# -vf scale=640:-1 scales image at defined sizes; setting -1 to either size preserves ratio based on other max-width definition
# --delay=3 tells gifsicle to delay 30ms between each gif
# --optimize=3 requests that gifsicle use the slowest/most file-size optimization
# usage: gifme filename.mov
# this should generate "filename.gif"
function gifme {
    ffmpeg -i $1 -vf scale=640:-1 -pix_fmt rgb24 -r 10 -f gif - | gifsicle --optimize=3 --delay=10 > "$1.gif"
}' >> ${ENVFILETYPE}
else
    echo "gifme function already exists........"
fi

echo "Done!"
echo "Open a new tab and run 'gifme videofilename.mov' to create your .gif!"

gistfile1.md

Installation

install homebrew

/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

install ffmpeg

brew install ffmpeg

add function to your environment file (.bashrc, .zshrc)

# make gif file out of .mov file
# Notes on the arguments:
# -r 10 tells ffmpeg to reduce the frame rate from 25 fps to 10
# -s 600x400 tells ffmpeg the max-width and max-height
# -vf scale=640:-1 scales image at defined sizes; setting -1 to either size preserves ratio based on other max-width definition
# --delay=3 tells gifsicle to delay 30ms between each gif
# --optimize=3 requests that gifsicle use the slowest/most file-size optimization
# usage: gifme filename.mov
# this should generate `filename.gif`
gifme () {
	ffmpeg -i $1 -vf scale=640:-1 -pix_fmt rgb24 -r 10 -f gif - | gifsicle --optimize=3 --delay=10 > "$1.gif"
}

Usage Instructions

1. Use QuickTime to do a screen capture
2. Save screen capture
3. Open Terminal application
4. cd to saved screen caputure
5. Run gifme screencapturefile.mov

General info

gifme should generate a new compressed screencapturefile.mov.gif file in the same location as the saved .mov file.