Q: When I output video to my deck (or TV monitor), the picture moves or
rolls? What can I do to obtain stable video?
A: DeckLink always has a stable video output so you don’t need genlock,
and this is great as it saves you a lot of money on a black burst generator. We
designed DeckLink to do this, as it makes the entire system cost much lower,
and that’s important for a low cost card. Generally you select the deck to input
video sync, when connected to DeckLink, and then the deck can lock.
However if you are in a big post facility, you might need Genlock, so DeckLink
Pro and DeckLink Extreme include genlock. Some Betacam SP decks (eg Sony
UVW1800 and UVW1400a) don’t always work well without genlock so DeckLink
SP and DeckLink Extreme include genlock. If you have problems with an analog
deck, you can connect the genlock.
If you are using DeckLink SP, DeckLink Pro or DeckLink Extreme, try connecting
the Y output of the DeckLink card to the reference input of the deck, and then
the reference loop out back into the Y input. That should let the deck lock to the
DeckLink. There are a few decks where this doesn’t work and in which case you
might need to use a black burst generator.
Q: I cannot get stable video output out of my Betacam SP UVW1400a.
What can I do?
A: This is a very popular model of deck as it is low cost. We have received a
range of reports regarding the Betacam SP UVW1400a and you might or might
not be able to get genlock working without a black burst generator. However,
you can give it a try and this has worked for a number of our customers,
especially with the latest drivers.
1. In the Video Input for component, you have the Y, R-Y and B-Y ports.
Remove the “Y in (from deck)” cable from the Component Y port and
connect it to the top-left Ref Video port.
2. Switch the Ref Video termination to Off.
3. Connect a cable from the top-right Ref Video port (labelled “sync”) and
connect it to the Component Y port.
That should let the deck lock to the DeckLink. There are a few UVW1400a
decks where this doesn’t work and in which case you might need to use a black
burst generator.
Most decks can just lock to the DeckLink SP and DeckLink Extreme but
UVW1400a owners have often reported that they had to use a blackburst
generator. The one we use inhouse is a Horita BSG-50 (you have to specify
NTSC or PAL) and you can see it at http://www.horita.com/video.htm#BSG-50.
24
To Next Page
Loading...
