Bash script to convert a YouTube video to a high-quality GIF file with a specified resolution, frame rate, start time, duration, and aspect ratio. It utilizes yt-dlp, ffmpeg, and gifsicle to accomplish this task. This script is based on a previous version by fushime2 with updated and new libraries, optimization and some other quality-of-life improvements added.

• yt-dlp (for downloading YouTube videos)
• ffmpeg (for video processing and GIF generation)
• gifsicle (for optimizing the generated GIF)

The script will attempt to automatically install these dependencies if they are not already present on your system. It only supports automatic installation on Ubuntu/Debian and macOS; on other operating systems, you will need to install the dependencies manually.

1. Save the script
2. Run the script with ./make_gif.sh
3. Follow the onscreen prompts

The script will guide you through the following steps:

• Enter the YouTube URL
• Specify the desired FPS (frames per second)
• Set the start time and duration for the GIF
• Choose the output resolution
• Select the aspect ratio (new feature!)
• Enter the output filename

The script will then download the video, generate a color palette, convert the specified video clip to a GIF using the selected resolution, FPS, and aspect ratio, and optimize the GIF file for better compression.

• Download YouTube videos
• Convert video clips to high-quality GIFs
• Customizable resolution and frame rate
• Selectable aspect ratio (16:9, 4:3, 1:1, or 9:16)
• Optimized color palette generation
• GIF optimization for reduced file size

This script is released under the MIT License.