am 2de3e2b6: The max video frame size was too small (640x480). increase it to handle HD (1280x720). Fix failures to generate thumbnails for HD contents.

Merge commit '2de3e2b65b81caf0821a6f0da2c1bf9af44249e6' into eclair-mr2

* commit '2de3e2b65b81caf0821a6f0da2c1bf9af44249e6':
  The max video frame size was too small (640x480). increase it to handle HD (1280x720).