"Jethro_uk" <
jeth...@hotmailbin.com> wrote in message
news:s0bmaj$lbl$1...@dont-email.me...
> Was chatting with SWMBO about this, watching "Yes Minister" which was
> almost all VT, which back in the day seemed far better quality than film.
16 mm film in the 1970s and 80s was very poor: grainy, soft (ie not sharp),
flickery (because it was 25p rather than 50i) and drab. It was very
noticeable because the standard production technique in those days was to
mix film exteriors with studio video interiors, and video was sharp, more
colourful and more smooth (because it was 50i). But it was a bit garish - I
remember a production of As You Like It, shot outdoors on video, being
described in a newspaper review as being "holiday brochure colours" - ie a
bit OTT.
Since then, the quality of both film and video have improved dramatically,
to the point that it is no longer possible at a glance to distinguish one
from the other, by looking for the tell-tale deficiencies of each.
I've noticed that a lot of old TV programmes that are repeated on UK Drama,
Yesterday etc, have an additional problem with the film inserts. Rumpole of
the Bailey on Talking Pictures TV at the moment is a good example of this.
There is a lot of smearing and double-imaging on movement. Maybe its more
noticeable on an LCD screen which displays everything in 25p - ie 25
complete frames per second, rather than two half-resolution fields, one
every 1/50 second. I think the problem is that the fields are being
"packaged" wrongly into frames: a given TV frame consists of two fields from
*different* frames of film, rather than both fields being from the same film
frame. You'd think that when the VT was being converted from analogue to
digital, this is something that would be checked for. My analogue-to-digital
(PAL to MPEG) converter has a 50% chance of doing it when I'm copying from
VHS, but I know about the problem and I check for it and start again if the
first few seconds display the characteristic symptoms. I'd expect
professional equipment not even to make that mistake. The problem is only
noticeable on film; video is fine.