PAL to NTSC conversion

[old_tv_nut]

I also note that Darryl Hock has produced multistandard converters for early TV collectors, so the idea is not preposterous, although the cheap price of the on-line offerings makes me wonder.

https://www.earlytelevision.org/hock_converter.html

[jhalphen]

Hi to all,

True 525/60 to 625/50 & vice-versa conversion exists at consumer-accessible prices.
Good ones sample Y at 13.5 MHz & R-Y/B-Y at 6.75 MHZ.
True digital Frame Store (2MB to 6MB or more) with movement interpolation.
Work as a TBC, useful for VCR tape copy.
Some high-end models have GenLock for studio/editing needs.

I use a bunch of these, notably to Tx OTA genuine NTSC USA from 625 sources.

These are technical wonders. In the late 60s, was a roomful of equipment with 100's of KW power consumption and, oh yeah multimillion $ cost.
look up the IBA's DICE (Digital Intercontinental Conversion Equipment)
see the monster here, a Marconi 4 page pdf :
http://marconiintelevision.pbworks.c...0Converter.pdf

Some example of modern consumer converters here from this French supplier :
https://www.goyona.com/VIDEOSYSTEMhtm.htm#CDM660

And a US supplier :
https://www.220-electronics.com/pal-...converter.html

Cheapo units decode the color subcarrier & re-encode to the wanted standard without modifying line/field rate.

Works OK. I designed & built one from scratch circa 1985 to use a Panasonic CT-101 1.5" micro-CRT color TV, converted PAL/SECAM to NTSC USA.

Addendum : heavy stuff, BBC research pdf's on standards conversion :
1964, early work on B&W standards conversion:
http://downloads.bbc.co.uk/rd/pubs/a...nograph_55.pdf

and Colour, later, 1972 :
http://downloads.bbc.co.uk/rd/pubs/reports/1972-22.pdf

Best Regards
jhalphen

[Dude111]

Originally Posted by old_tv_nut

.....Either of these processes requires an analog to digital conversion and back to analog to make the output be a continuous NTSC signal that an NTSC receiver can use. The picture content, however, has either 3/2 pulldown or 5 Hz motion jump.

Ya he told me about doing that but he said it would most likely affect the video. (Wouldnt look as warm (Analogue))

Im curious why my PAL-NTSC tape of SONG OF THE SOUTH is fine,no speedup at all.. (Unless they did it correct on the PAL tape)

And I have a Phil Collins concert (1990) - Seriously live that someone told me was originally PAL and it was just converted to NTSC for NTSC areas.. No speedup on that either and video is goregous! (Original analogue concert audio on the linear track)

Best sounding songs I have heard from him -- Over 2HRS of his best 80s music!

[Colly0410]

I remember watching The Andy Williams show in the late 1960's on BBC1 405 lines 50Hz, it was OK when no movement was taking place but when anything moved it jerked across the screen in a very disconcerting way, what sort of converter the BBC was using I do not know.... In 1976 the Montreal Olympics everyone had a greenish faces on PAL colour TV's, luckily my parents had a Sony KV 1800 that converted PAL to NTSC & we were able to adjust the hue control to correct it, but it was right at the end of it's travel. When it went back to English studio shots they were a purple'ish red & the hue control had to be readjusted again: we were up & down like a jack in the box, lol...

[old_tv_nut]

Originally Posted by Colly0410

... In 1976 the Montreal Olympics everyone had a greenish faces on PAL colour TV's, ...

Sounds like a problem with an NTSC feed before conversion to PAL. Unless, of course, they were doing parallel shooting in PAL in 1976.