Whenever I see other videos like these (such as a handover from Thames to LWT on a Friday or the handover at midnight 1993 from Thames to Carlton or even from TV-AM to the regions), comments say the effect wouldn't be seen on broadcast as TV sets were more tolerant, and VHS recordings exacerbate the effect of the non-sync cuts. How true that is I don't know.
It's very true !!! No VTR liked to have disturbance on the sync pulses, as the mechanical servos used them as a timing reference. It was far less noticeable 'live', though as a youngster I could often hear the TV's line output transformer 'chirp' as it missed a beat when there was a non sync cut.
Professional VTRs didn't even like the sync timing to drift, which was a problem in the 70s, before synchronisers. When an ITV company was about to cut to the network feed, they'd bring themselves
in sync by adding or subtracting a line on their station sync pulse generator in the 5 to 10 seconds leading up to the cut. All the viewer at home would see, would be the picture twitching slightly vertically, but any VTR in the building that was running would go bananas. That's why back then, something camera sourced was used during those seconds, station clock, static caption, or in vision announcer. Certainly no 'stings' off
VT !!!
You can see the effect here, the moment the clock appears, Southern start syncing themselves with ITN, the VHS goes crazy, but recovers in time to see that they are able to perform a fast cross fade to ITN
https://www.youtube.com/watch?v=YaMYy5kB1oQ
Last edited by Markymark on 30 June 2015 4:18pm - 2 times in total