From: Paul Garmon <[EMAIL PROTECTED]>
Subject: Frame synchronizer
>Is there any real benefit to using an external timebase corrector when
>using either VHS, SVHS, Mini DV, or DVCAM formats as the source? Don't
>these consumer brand decks have their own built-in timebase correctors?=20
A frame synchronizer is useful with tape analog sources which tend to have
shaky sync, including VHS, SVHS, U-Matic, analog video disk, etc. This is
not true of live analog cameras though, which are stable sources.
Frame synchronizers are sometimes known as Time Base Correctors or TBCs.
TBCs were designed to provide a feedback loop for a tape deck to adjust its
capstan speed in response to the wavering of the video output sync
signal.=20 This is different than something which holds and replicates frames.
MiniDV/DVCAM, Betacam: Shouldn't need anything since the source is digital
(or in the case of Betacam is digitally processed) and there is no
sensitivity to tape speed.
>are there any TBCs that use svideo ins/outs, and if so, >which
brands/models are best recommended?
In the professional world, you may see the notation Y/C. That means
S-video, although you sometimes might need to use a special connector that
turns the S-video connector into 2 BNC connectors.
My all time favorite is the I.DEN IVT-7, which cost about $1000 many years
ago.=20
You could probably find a used one somewhere for quite a bit less than that.
I.DEN IVT-7 Digital Time Base Corrector
Full Frame Synchronizer=20
=95 Full frame Component processing with 13.5MHz sampling
frequency in 4:2:2 ratio and 8-bit processed Y/C =95 Chroma
control =95 Composite BNC, S-Video connector input/output =95
Transcodes composite and S-Video =95 External genlock
capability =95 More than 450 lines of video processing =95 Shuttle
operation =95 58dB S/N=20
Other low cost (for video anyway) gear is commonly made by Hotronics:
http://www.viscountvideo.com/hotronic.htm
(this is an example only, I know nothing about this place)
With quick look on ebay, I found these:
http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=3D313250317
http://cgi.ebay.com/aw-cgi/eBayISAPI.dll?ViewItem&item=3D313421905
http://www.for-a.co.jp/eng/products/FA310.PDF
(the 310 *may* be similar to the 210, but I don't know)
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