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Earliest surviving 2″ quad videotape masters

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FilmBlokeJ New member
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Do you mean Digital Betacam - or Betacam (the original analogue component format that dates back to the early-mid 80s?)

Yes I was referring to Digital Betacam

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In the case of Some Mothers Do 'Ave 'Em - either the later BBC release was mastered correctly and the subcarrier reference was blanked, or there is a possibility that the BBC release was sourced separately via a non-BBC Transform decoder. I'd hope it's the former, not the latter.


I think it's the latter because the episode Moving House from series 3 has it (although for some reason it looks really blurry). It's hard to make out but it's there if you zoom into the image.
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The BBC DVDs of Some Mothers came out in 2011 and clearly haven't been remastered in anyway were as the classic Doctor Who range have the subcarrier reference intact (for the most part) and they have been remastered so why wouldn't the Doctor Who Restoration Team remove it, Terror of the Zygons released on DVD in 2013 has it although it's a little blurry and they are still on some of the Blu Ray releases that only started coming out in 2018, here's an example * And here's the DVD * (The screenshot is from Robot, originally recorded on 2 inch tape in 1974 and later converted to D3 tape in the 1990s, on the Blu Ray from 2018 the subcarrier reference is longer and nearly touches the edge of the left hand side of the screen were as on the DVD from 2007 the subcarrier reference is shorter and in the centre).
Last edited by FilmBlokeJ on 31 January 2021 10:43pm - 2 times in total
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FilmBlokeJ New member
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Something I picked up on with black and white taped material is it is not pure black and white because while the cameras were recording in monochrome the noise and the edging have colours, such as greens, blues and reds where as black and white telerecordings are pure grey scale.

I just wanted to add quickly, the screenshot I've provided previously was produced during the ITV colour strike so the colour fringing on objects is more visible (such as on the hats worn by Stan and Jack) were as on series 1 and 2 the colour burst appears in the noise and is more subtle (mainly greens and blues). (This screenshot came from series 2).
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