Awesome

FFMPEG gif script for bash

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Script to generate animated gifs easily from command line.

Outputs palette-mapped .gifs with great colours & desired resolution from your videos.

Installation

Clone the repo
Install ffmpeg (you might need to install a package manager, such as homebrew for OS X)

Usage

Run ./gifenc [input movie file] [generated gif's name] [horizontal resolution] [frames per second (fps)]
i.e.: ./gifenc input.mov output.gif 720 10 will output 720px wide 10fps .gif. (chmod +x gifenc.sh might be needed to run beforehand)

Tips

Tweak the parameters in order to get internet-shareable sizes
Tested with most common movie formats

Special thanks to this article.