BBC Bristol used DVHS on Antiques Road show,
No - Antiques Roadshow didn't use D-VHS, they used JVC's Digital-S (aka D9) format. (By then BBC Bristol's OB base had closed and they used a Kendal Avenue Type VII?)
Digital-S/D9 used a VHS form factor (and larger) cassette to record a 4:2:2 Intra DV50 bitstream (not a 25Mbs 4:2:0 LongGOP MPEG2 stream as per D-VHS). The results were identical to DVC Pro 50 (the 50Mbs 4:2:2 DVC format that EastEnders used) and visually very similar to IMX50 and Digital Betacam.
D-VHS was a consumer format, and would have been a nightmare as a broadcast format with it's LongGOP format (insert editing would have required a lot of buffering and GOP mangling)
Digital-S was a broadcast format, and used an intra-frame codec (so insert editing was easy), and the range included broadcast VTRs and a camcorder (which was dreadful).
Arguably Digital-S was the 1/2" equivalent to the Sony 1/2" Digital Betacam format (just as M-format was the 'VHS' answer to Betacam, and MII was the their answer to Betacam SP), however Panasonic had already moved on to the DVC family.
Arguably JVC then pivoted the D9 format to compete with the DVC Pro range - as just as DVC Pro HD used a 100Mbs DV codec to add (reduced resolution) HD compatibility to their DVC Pro range, JVC introduced a D-9 HD based on (I think the same) 100Mbs DV codec. There were arguments that D9 was more robust than DVC Pro because of the larger tape area used.
(Just as HD Cam was 1440x1080 3:1:1, DVC Pro HD 100 was either 1440x1080/50 or 1280x1080/60 subsampled)
Last edited by noggin on 18 April 2020 8:24am - 3 times in total