How to screen capture to GIF using Byzanz Ubuntu

Byzanz is best way to record GIF on ubuntu, only disadvantage is that its command line tool (to few like me, this is an advantage )

Simplest way to create GIF

byzanz-record --duration=5 out.gif

Now if you want to add delay of few seconds

byzanz-record --delay=5 --duration=10 out.gif

If you want to record specific dementions ?

byzanz-record --duration=15 --x=200 --y=300 --width=700 --height=400 out.gif

Here is sample recording