CLI is COOL!
It all started with this great post: GIF screencasting; the UNIX way
what the expected result is like this:
And like this:
Well, it’s a bash script. What it does is simply amazing: select a region, and turn it into a high quality gif.
In the back:
- it let’s you select a region with your mouse, done by xrectsel
- it records the region into a video, done by ffmpeg
- turn it into a gif with convert from ImageMagick, optimized to save space.
However, xrectsel doesn’t work well in my distro(Ubuntu 16.04LTS).
So I made some modifications and replaced xrectsel with slop 1.
Sooo here’s what I get:
Here is the little script:
#!/bin/bash read -r X Y W H G ID < <(slop -f "%x %y %w %h %g %i") TMP_AVI=$(mktemp /tmp/outXXXXXXXXXX.avi) ffmpeg -s "$W"x"$H" -y -f x11grab -i :0.0+$X,$Y -vcodec huffyuv -r 25 $TMP_AVI \ && convert -set delay 5 -layers Optimize $TMP_AVI ./out.gif
I find that imgur will transform uploaded gif into mp4 again…
here is what I got from them:
compared with the source file 1.avi 591.7MB 1.gif 17.4MB 1.mp4 4.8MB
imgur surely did a great job on improving the network traffic!
- for ffmpeg, i use sudo apt-get; for slop, it seems for other distro to be possible to install with package manager, but in ubuntu 16.04, some dependencies needs to be installed manually https://github.com/naelstrof/slop/issues/52 ↩