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BBC Ident expansions

(December 2008)

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MA
Markymark
Inspector Sands posted:
The BBC's policy used to be (maybe it still is) that the aspect ratio change should be hidden with a U transition. Around the same time they moved the ratio switch from the cut between the ident and programme to the one into the ident so they could make arty fades into programmes.

That eliminates the effect you are seeing


TV3 in Dublin use a Snell and Wilcox ARC in their analogue Tx chain, that slowly (about 25 frames) transitions between 14L12 and 12F12. Looks good !
IS
Inspector Sands
Hymagumba posted:
denton posted:
still use a V fade (rather than a U Fade) to hide the aspect ratio switch in to sports programmes.


*whoosh*


Think of U and V as the shapes of a graph - with the x axis being time and the y being video level (from black at the bottom to full brightness at the top.

A 'V' transition fades down to black and then back up again and the cut takes place at the bottom of the V

A 'U' transition goes down to black quicker and stays there for a bit before fading back up quickly. The cut happens in the black bit, which is long enough to hide an aspect ratio change

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