Your" video are just incredible of clarity even if i just know ‘tak’ ze dobje , nasdrovie … in russian languages 
register, yep it is… wiki.synfig.org/wiki/Special:RequestAccount
Until some really nice russian/english people speaking translate it … yep… for sure !
Can i ask you if you can, as you plan to do a third shoot, to try to do it with a more actual Synfig dev snapshot ?
Linux Binaries for Development version of 0.64.0 - terminology update / cairo (not fully) inside
or
download.tuxfamily.org/synfig/packages/binaries/ - terminology update
—> to take advantage of new terminology and icon in your screencast and make it more sustainable 
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scree:(;ya!