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Grex > Hardware > #25: Standard U.S.A video to European video conversion. | |
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klaus
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Standard U.S.A video to European video conversion.
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Nov 21 12:04 UTC 1991 |
I have an 8mm video tape, with about an hours worth of material on it,
that I would like to have recordered on to a VHS tape incorporating the
european video standard. I have called around and found a place that'll
do it for about $45. I understand that this is not a simple process, in
that the video on the tape would have to be placed between sync pulses
of different timing, but was hoping to do it for about half of that. Any
thoughts? Also, what is the difference between european and U.S.A video?
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| 13 responses total. |
mistik
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response 1 of 13:
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Nov 21 18:10 UTC 1991 |
I was thinking that the UofM Libraries have a media center where they can
do such transfers, don't know about rules and fees.
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choke
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response 2 of 13:
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Nov 21 18:49 UTC 1991 |
American video began as black and white video. When color came up, the
additional information was fit into the black and white bandwidth.
NTSC color has fewer lines than black and white (american) video.
American power is cycled at 60hz. American video is also 60hz (vertical
refresh)
PAL (The european standard) started as a color standard, and thus there was no
compromise for backwards compatability. It has more lines vertically, and as
european power is 50hz, the refresh rate on PAL equipment is also 50hz.
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bad
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response 3 of 13:
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Nov 22 00:05 UTC 1991 |
I could transfer it to VHS american, if that helped, but I doubt it would.
It's a bitch to get a european setup, and they feel free to charge you an
arm and a leg for the use of it.
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ragnar
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response 4 of 13:
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Nov 24 07:02 UTC 1991 |
Re #2 - Actually, when color was introduced, the refresh rate was dropped just
a hair to 29.97 per refresh (or half-refresh, not sure) to work around a
problem with certain parts of the signal 'beating' with each other. Not only
does this further screw up conversions, it makes audio time-coding a real bitch
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klaus
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response 5 of 13:
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Dec 2 12:42 UTC 1991 |
The U of M Libraries sounds like a good idea. I'll check into it.
(I sure hope that when HDTV becomes the standard, they will come up with
a global standard.)
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bad
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response 6 of 13:
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Dec 2 23:19 UTC 1991 |
I work at the grad, and I don't know anything about this. I'll have to ask.
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mistik
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response 7 of 13:
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Dec 3 01:14 UTC 1991 |
I heard from someone that there is a media library or something like that,
where you can watch videos, and also do conversions. However, you would have
to clarify the (C) status.
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ecl
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response 8 of 13:
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Dec 3 06:59 UTC 1991 |
Look around on the second floor of the Modern Languages building.
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mcnally
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response 9 of 13:
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Dec 4 08:21 UTC 1991 |
If you're affiliated with U of M, I'd try calling either (a) the LS&A
Media Center (in the basement of Angell Hall), or (b) the Film & Video
Department. I believe there's a Film and Video library somewhere on 3rd,
4th, or 5th St. (i.e.: way off campus) but I suspect that the Media Center
is your best bet.
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klaus
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response 10 of 13:
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Dec 4 13:10 UTC 1991 |
I will look into the U pf M. I am not associated with the U, but my dad
certainly is.
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mdw
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response 11 of 13:
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Dec 11 14:42 UTC 1991 |
Switching between NTSC and PAL color is pretty trivial. Switching scan
rates is not -- you have to take 25 frames of 600 lines, and turn it
into 30 frames of 500 lines, or some such -- they did use the same
horizontal scan rate, but that doesn't really help a whole lot. A
couple of years ago, a box to do the conversion, one way, cost about
$40K. 'Course, it's all electronics, so ought to be dropping like a
rock.
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ragnar
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response 12 of 13:
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Dec 12 02:51 UTC 1991 |
<THUD!>
Hey, lookit this... looks like an NTSC/PAL converter...
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mdw
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response 13 of 13:
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Dec 14 06:51 UTC 1991 |
You can get IC's that will mix color into either Pal or NTSC.
Most of the logic is the same for both.
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