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Old 04-04-2020, 08:37 PM
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1957 CBS Cinderella kinescope: possibility of colour recovery!

G'day all.

I was previewing the kinescope recording of the 1957 CBS colour broadcast of Cinderella https://www.youtube.com/watch?v=C1F4YhBOA14 and I can literally see chroma dots in the picture which means the colour information in this kinescope film recording is present. I've attached a snapshot strongly showing chroma dots.


So I think it is quite possible the colour can be digitally restored using the colour recovery method developed in the UK https://www.youtube.com/watch?v=CjK-b4x9ZmQ which was used to successfully restore colour on BBC programs like Dr Who, Dad's Army etc. that were in colour but recorded to B&W film. More info on colour recovery can be seen here https://en.wikipedia.org/wiki/Colour_recovery

Does anyone know which CBS archive or independent archive holds the original film print of this program?

I personally think the original print of this film should be scanned at 4K upwards quality and that chroma dot colour digital colour recovery method applied, I'm sure much of the colour will be recovered! I wonder how many other B&W kinescopes of colour programs out there have the chroma dots too?
Attached Images
File Type: jpg chromadot.jpg (60.6 KB, 158 views)
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Last edited by Aussie Bloke; 04-04-2020 at 08:41 PM.
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Old 04-04-2020, 11:56 PM
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See my history of the actual attempt to do this, in the Television Broadcast Theory section.
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Old 04-06-2020, 12:23 PM
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From what I understand kinnescope color recovery has only successfully been done on PAL color kinnescopes. PAL has the advantage of the chroma subcarrier phase reversing every line so phase (hue info) can be recovered by comparing adjacent lines relative phase.
NTSC keeps color carrier phase constant so without the sync burst there is no relative reference like what PAL gives.
Can NTSC kinnescopes practically be recovered using this method?
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Old 04-06-2020, 01:03 PM
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Quote:
Originally Posted by Electronic M View Post
From what I understand kinnescope color recovery has only successfully been done on PAL color kinnescopes. PAL has the advantage of the chroma subcarrier phase reversing every line so phase (hue info) can be recovered by comparing adjacent lines relative phase.
NTSC keeps color carrier phase constant so without the sync burst there is no relative reference like what PAL gives.
Can NTSC kinnescopes practically be recovered using this method?
Let's keep this in the parallel thread in Television Broadcast Theory, so it's all in one place.

I will quote you and answer there.
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Old 04-06-2020, 01:38 PM
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Attention future posters:

Please post in the parallel thread in television broadcast theory
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Last edited by old_tv_nut; 04-06-2020 at 01:45 PM.
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