see fibonacci/script
- Terminal:
- 81x24 (best to fit into Youtube 854x480 video)
- font: Liberation Mono Regular 12pt
- color scheme: Built-in "Black on White"
- no ~/.vimrc
- export PS1="> "
- Record video with asciinema
cd fibonacci
asciinema rec movie.json
- Edit timing and pauses
- Play recorded asciinema episode
asciinema play movie.json
- format: Lossleass AVI (best for GIF)
- size 854x480 (best for youtube) result will be ~ 3.5Gb
http://blog.pkh.me/p/21-high-quality-gif-with-ffmpeg.html
# Palette generation from the number of frames
ffmpeg -y -ss 30 -t 3 -i Screencast\ 2017-06-01\ 20:05:18.avi \
-vf fps=10,scale=640:-1:flags=lanczos,palettegen palette.png
# Convert to 10 fps GIF 640x360
# ~ 1.2Mb
ffmpeg -i Screencast\ 2017-06-01\ 20:05:18.avi -i palette.png -filter_complex \
"fps=10,scale=640:-1:flags=lanczos[x];[x][1:v]paletteuse" output.gif
# Convert 5fps fps GIF 640x360
# ~ 1Mb
ffmpeg -i Screencast\ 2017-06-01\ 20:05:18.avi -i palette.png -filter_complex \
"fps=10,scale=640:-1:flags=lanczos[x];[x][1:v]paletteuse" output.gif
Alternative: https://github.com/thevangelist/FFMPEG-gif-script-for-bash