Laszlo,
It is not the rendering since I see the problem already in preview window (on various resolutions – also on BEST). I did the rendering just in order to verify the problem and to send it to YOUTUBE for people to review it. Anyhow I rendered at variety of set-ups, starting with HiDev 1080-50i, continue with PAL MPEG and ending with AVI 7xx over 4xx – All showed the “wobble” problem.
The way I zoom was to have in the starting keyframe text size which I set up its properties -> scale to 0.4 and ending keyframe text with scale of 2.2.
I will look into the link you’ve set.
Reg,
Joe