jpeterka_Screen-cast feature doesn't work properly

What I did:
* clone RedDeer
* mvn clean install -DrecordScreenCast=true
* when finished I've located ...org.jboss.reddeer.swt.test/screencast files

There were two: 
activateShellTest.... mov and
testCheckTable...mov

first is playable but only 1 sec long
second is not playable at all

What I would like to have is to have complete stream to see what goes wrong during all tests execution. Order of tests is important so I can play all the sequence. I don't care if it's one file or multiple files.