[opendtv] Re: France bids farewell to SECAM
- From: "Peter Wilson" <peter.wilson@xxxxxxxxxx>
- To: <opendtv@xxxxxxxxxxxxx>
- Date: Wed, 7 Dec 2011 21:32:44 -0000
From memory when SECAM was first used the Broadcasters worked in Analogue
Component with immensely complicated Thomson mixers and only coded at the
last point.
By the late 70'a most studio's and trucks used PAL until the transmission
encoders, so in fact they didn't bother or as we say in the "UK am I
bothered!"
BR,
Peter
-----Original Message-----
From: opendtv-bounce@xxxxxxxxxxxxx [mailto:opendtv-bounce@xxxxxxxxxxxxx] On
Behalf Of Mark Schubin
Sent: 06 December 2011 22:22
To: opendtv@xxxxxxxxxxxxx
Subject: [opendtv] Re: France bids farewell to SECAM
In other words, why bother? You could use PAL equipment for production
and then transcode for transmission.
TTFN,
Mark
On 12/6/2011 4:49 PM, Olivier Houot wrote:
> I've discussed on a french forum with someone that worked in this
> domain.
>
> He mentionned Thomson TTV 5000, 5600,5620 series as devices that could
> be used to work with SECAM encoding at the camera (and had this AM bus
> for mixing).
>
> However he says this generally involved some loss of resolution during a
> cross fade.
>
> Also, in case of R-Y/B-Y phase mismatch when joining sequences, if you
> did not take adequate precautions (pre-roll) you could end up with a
> defect known as the "pink panther" (16 to 32 colored lines at the top
> of the picture).
>
> For recording, 2 inch Ampex quadruplex as well as the first 1 inch
> devices could record the signal without modification.
>
> 3/4 inch BVU800 series or 1 inch BVH2000 would use some form of
> transposition.
>
> Not ideal, then, but possible.
>
>
>
>
>
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