Whatever Gif is the old or new sexy. You needed it anyhow.
Dependencies and Prerequisites:
- ffmpeg
- imagemagick
Use Homebrew or any other package manager to install them.
$ brew update
$ brew install ffmpeg
$ brew install imagemagick
How to use
For example, you'd like to convert https://video.twimg.com/hls/_video.m3u8 to gif.
$ mkdir mp4_to_gif
$ ffmpeg -i myfile.mp4 -vf scale=420:-1:flags=lanczos,fps=10 mp4_to_gif/ffout%03d.png
$ convert -loop 0 mp4_to_gif/ffout*.png output.gif
$ rm -rf mp4_to_gif
What you really need
Edit your shell run commands (bashrc, zshrc), add this alias:
alias v2g='function _v2g(){ mkdir mp4_to_gif && ffmpeg -i $1 -vf scale=420:-1:flags=lanczos,fps=10 mp4_to_gif/ffout%03d.png && echo "converting gif ..." && convert -loop 0 mp4_to_gif/ffout*.png output.gif && rm -rf mp4_to_gif };_v2g'
You can now perform the operation as following:
$ v2g https://video.twimg.com/hls/_video.m3u8