In article , NY wrote:
wrote in message
...
On 23/12/2019 14:07, Broadback wrote:
On 23/12/2019 14:00, John wrote:
?

Sows my age I suppose, LPs contained the full musical, pictures and
sound.

99% of people think of an LP as a black vinyl disc that plays sound
only. I suggest you clarify what format you are seeking.

As I said that shows my age, LPs contained the complete films. As
regards format I do not know, what is transferable to TV?
As others have said: the term "LP" refers to a flat disc with grooves
that's played on a "record player" (a Long Play(ing) record); the
technology was unable to carry video information for a film. Perhaps
you're getting confused with one of the tape technologies (VHS,
Betamax), or video disc?

I believe Baird experimented with recording his 30-line TV pictures onto
the grooves of a record, but apart from that, I don't think there have
been any mechanically-written/read video recording formats.

I've seen (in the 1960s) a tape recording of a Baird record.

On VHS (and maybe Betamax) there was a tape speed that was designated LP
(long play) which ran the tape at half the full SP (standard play) speed
and so could record a whopping 10 hours on a 5-hour tape. The picture
quality was crap, and freeze-frames were monochrome. Ironically, the
later EP (extra-long play) which ran at 1/3 speed gave better quality
pictures and colour freeze-frames. I hadn't realised how crap VHS was
until I came to copy some tapes (mostly at SP, some at LP or EP) onto
MPEG using an analogue capture card: for some reason, all the capture
devices I've tried have made the timing jitter (wiggly vertical lines)
far more obvious than they are when displayed on an analogue TV. I
wasn't rich enough to own a VHS that had a timebase corrector :-)

--
from KT24 in Surrey, England
"I'd rather die of exhaustion than die of boredom" Thomas Carlyle