Hi there, playing any programme through the web player in full screen mode, on a second display in Mac OS X, results in black bars all the way around the playing video - about 10-20px worth.
This is especially bad for HD programmes, as the monitor in question is a native 1280x720 display so the video is being unnecessarily scaled to a smaller, non-native size (resulting in a significant loss of quality).
(see attached screenshots below)
 Issue occurs in both Safari and Firefox, latest version of Flash at time of writing (10.0.32.18).
 Issue does not occur watching the same iPlayer video on the primary display (though that's a different aspect ratio @ 1440x900, so there are black bars top and bottom as expected).
 Issue does not occur with other flash video streams e.g. Youtube.
 Issue did not occur with a PC plugged in to the same display, as a primary display - was not able to test with the PC as a secondary, so affected setups may be 'Mac OS + Second display', or 'all platforms + second display'
 Another perhaps relevant observation - it seems Flash does know where the true edges of the screen are, as the seek bar UI goes right to the bottom of the screen - but the bottom of the video box is higher up - aligned exactly or within one pixel of the bottom of the two vertical bars in the 'pause' symbol in the seek bar (or the bottom of the 'play' triangle; shown below).
 in HD the above offset is slightly different:
Any help with this would be hugely appreciated :)
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