Thanks! Installed without a glitch (0.0.2), python-gdata you may find in App manager (search in Installable applications section, red pill mode should be on). Starts directly from Extras. Little sloppy, sometimes i should press a button twice, but works!
Requests: fullscreen mode for video by default, double-click on an item triggers playback. And yeah, some basic management for saved videos) Please let it save a video on the card only by user's request, or the whole memory will be gone shortly.) Now in 'Saved' section it includes the videos that weren't downloaded yet.
Anyway, the app is pretty usable right now. Great work!