In answer to the second part, I can't think of ANY Amiga digitizer that copied the video to hard drive. Hard drive storage was extremely expensive. Instead you used the Amiga to generate effects, titles, etc., and then did final editing by splicing these scenes into your video tape by whatever means. Most setups included the Amiga and monitor, at least two video players/recorders and a television to view the new video image containing the combined Amiga/video image which was recorded to the second recorder.
This was the extreme early days of desktop video....
Bob
The DPS PAR plus TBC IV was an NLE system that recorded video on (up to) 2 4gb IDE HDs. Of course when the Personal Animation Recorder was new, 4 4gb HDs would - assuming you could buy an IDE HD in 4gb capacity - $16,000.00 (drive space was $2/mb at the time). Certainly not beyond the pale for a serious audio/video studio's budget back in 1993, but probably outside the bounds of the DTV hobbyist!
Most folks were motoring along with 100mb drives or thereabouts, so a pair of those would set you back $400, and you'd get about 10 minutes of video on 'em.